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RUWAIS LNG PROJECTSPECIFICATION FOR INDUCTION MOTORSNMADCCOMPANY DOCUMENT REF.RLNG-000-EL-SP-0003REVISION:1PAGE 1 OF 9CONTRACTOR DOC. REF.21 5122C-000-JSS-1690-0001ADNOC GASSpecification for Induction MotorsCOMPANY Contract No.4700022871JV TJN RUWAIS Contract No215122CDocument ClassClass 2Document Category (for Class 1)OPERATING CENTER Contract No.OPERATING CENTER Doc Ref.SS-000-13821-0101()Sk,IFC - Issued for Construction18-Aug-2024R.Matsushima0ICR -Issue for Company Review14-May-2024J. GhoshM. SanoRevision PurposePrepared byChecked byApproved byRev.DateThe terms of Contract / Agreement No: CON22-146 shall apply for any disclosure of this document to any third party.1 /63TENJGCM.Sano/I.SawakiMatsushima 2024.08.13 14:06:15+09’00’E. PapeilS.PandeyA.GoshE. PapeilR. DewanganA. GhoshSawaki Isao 2024.08.09 16:18:48 +0900TECHNIP ENERGIEScq-ialADNOCJ-DMS 14-Aug-2024 UNCONTROLLED WHEN PRINTED

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TECHNIPENERGIESRUWAIS LNG PROJECTSPECIFICATION FOR INDUCTION MOTORSNMADCREVISION:1PAGE 2 OF 9Table of ContentsContentsPage1.。 INTRODUCTION4599The terms of Contract / Agreement No: CON22-146 shall apply for any disclosure of this document to any third party.2/63TENUGC56444441.11.21.31.41.5COMPANY DOCUMENT REF.CONTRACTOR DOC. REF.cq-ial ADNOCProject Objective and Location Scope of the Document… Holds List… References… Definitions and Abbreviations..2.0 AMENDMENTS TO ADNOC GENERAL Engineering SPECIFICATION (AGES-SP-02-007)2.1 Section A - General (Contractual Requirements)…2.2 Section B -Technical Requirements…3.0 APPENDIX…3.1 Appendix 1…RLNG-000-EL-SP-0003215122C-000-JSS-1690-0001RUWAIS LNG PROJECT

SPECIFICATION FOR INDUCTION MOTORS

COMPANY DOCUMENT REF. CONTRACTOR DOC. REF.

RLNG-000-EL-SP-0003 215122C-000-JSS-1690-0001

REVISION: 1

PAGE 3 OF 9

Table of Changes compared to previous revision

Paragraph

Modification description

Remarks / Origin

This document has been updated from the FEED “359665-0000-070-SP-1600-006_Rev 0” document. Applicable comments as per “Comment Reply sheet” have been incorporated.

The terms of Contract / Agreement No: CON22-146 shall apply for any disclosure of this document to any third party.

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REVISION: 1

PAGE 4 OF 9

1.0

1.1

INTRODUCTION

Project Objective and Location

The ADNOC Ruwais LNG Project is developing a new two train, near net-zero electrically driven LNG facility, targeting international markets. The project is located adjacent to the Ruwais Refinery West, UAE, comprising approximately 2 million square meters within the Ruwais Industrial Area.

1.2

Scope of the Document

This specification amends ADNOC General Engineering Specification AGES-SP-02-007 which is attached hereto in Appendix 1 and shall take precedence over the requirements of AGES-SP-02-007 for the Ruwais LNG Project.

Section 4 of this document identifies the amendments to the ADNOC General Engineering Specification included in Appendix 1.

1.3

Holds List

HOLD

DESCRIPTION

1.4

References

Document Number

Document Title

AGES-SP-02-007

Induction Motor Specification (Revision 1)

1.5

Definitions and Abbreviations

COMPANY

CONTRACTOR

LNTP EPC ADOC POC YOC

ABU DHABI NATIONAL OIL COMPANY (ADNOC) P.J.S.C. TJN Ruwais, Joint Venture of Technip Energies France-Abu Dhabi, JGC Corporation and National Marines Dredging Company (NMDC) Limited Notice To Proceed Engineering Procurement Construction Abu Dhabi Operating center - National Petroleum Construction Company Paris Operating Center - Technip Energies Yokohama Operating Center - JGC Corporation

The terms of Contract / Agreement No: CON22-146 shall apply for any disclosure of this document to any third party.

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REVISION: 1

PAGE 5 OF 9

Abbreviation

Definition

2.0

AMENDMENTS TO ADNOC GENERAL ENGINEERING SPECIFICATION (AGES-SP-02-007)

Instructions contained below such as “Add”, “Substitute”, “Revised”, or “New” shall be interpreted as follows:

Add: Requirements shall be a continuation of the paragraph in the referenced specification.
Substitute: The requirement of the referenced specification shall be replaced in its entirety by the

requirements below.

Revised: The requirement of the referenced specification shall be revised by the specific wording

below.

New: A new requirement as described below.

2.1

Section A – General (Contractual Requirements)

The following amendments and additions shall apply to the “AGES-SP-02-007” for the Specification of Induction Motors.

2.1.1 Amendments to Clause 2.1 – International Codes and Standards:

Add the following standards:

 

IEC 60034-9 Rotating Electrical Machines Part 9: Noise Limits ISO 3744 levels of noise sources using sound pressure

Acoustics – Determination of sound power levels and sound energy

2.1.2 Amendments to Clause 2.2

The following AGES references are substituted with Project documents as detailed below:

AGES Reference

Project Document No.

Project Document Title

AGES-SP-02-001

RLNG-000-EL-SP-0002

Specification for Power Transformer

AGES-SP-02-004

RLNG-000-EL-SP-0005

AGES-SP-02-008

RLNG-000-EL-SP-0014

Specification for Electrical Adjustable Speed Drive System

Specification for Electrical Control and Monitoring System

The terms of Contract / Agreement No: CON22-146 shall apply for any disclosure of this document to any third party.

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REVISION: 1

PAGE 6 OF 9

AGES Reference

Project Document No.

Project Document Title

N/A

RLNG-000-PM-PP-2003

AGES-SP-07-004

RLNG-000-MT-SP-2301

AGES-PH-02-001

RLNG-000-EL-SP-5101

Equipment and Component Numbering Procedure

Specification for Protective Coating of Equipment, Piping & Structures

Philosophy for Earthing, Bonding and Lightning Protection

AGES-SP-07-011

RLNG-000-PM-PP-9001

Project Preservation Vendor’s Requirement

AGES-GL-02-001

RLNG-000-EL-BOD-0001

Electrical Design Basis

2.2

Section B -Technical Requirements

Technical Amendments / Supplements to AGES-SP-02-007

The following amendments and additions shall apply to the “AGES-SP-02-007” for the Specification of Induction Motors.

Clause 7: AMENDMENTS AND SUPPLEMENTS TO IEC 60034-1

2.2.1 Clause 7: Amendments and Supplements to IEC 60034-1

Update all IEC referenced Clause numbers as per revised and latest revision of IEC 60034-1. Clause descriptions are also revised, where applicable.

AGES-SP-02-007

Updated IEC Clauses (as per latest 60034-1)

IEC Clause Ref.

Description

Revised Clause Ref.

Revised Description

4.1

5.7

7.3

7.4

7.5

10.1

10.2

Declaration of Duty

4.2.1

Co-ordination of voltages and outputs

5.7

Preferred combinations of voltages and outputs

Voltage and Frequency Variations during Operations

Three phase AC motors operating on unearthed supply

Voltage (peak and gradient) withstand levels

General

Marking

7.4

7.5

7.6

10.3

10.4.2

Rating Plate

Minimum Information Requirements

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REVISION: 1

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2.2.2 Clause 7.2.1: IEC Clause 4, Duty

Add:

IEC Clause 4.2.9: Duty with non-periodic load and Speed Variations

Motors supplied and controlled via Adjustable Speed Drives (ASDs) shall be designed for duty type S9.

2.2.3 Clause 7.3.1: IEC Clause 5, Rating

Add additional paragraph.

Motor rating shall be continuous running duty, defined as a rating at which the machine may be operated for an unlimited period, and complying with all other requirements.

Motors shall be sized to the requirements of the driven equipment plus deign margins in accordance with API 610 design guide.

In all cases the motor is required to start and run up the driven equipment at 80% of rated voltage.

Quotations shall include a speed / torque curves showing:

  

The driven equipment torque requirement The motor torque at 80% of rated voltage The motor torque at 100% of rated voltage

2.2.4 Clause 7.3.1: IEC clause 5.7, Preferred Combinations of Voltages and Outputs

Add the following for Item.

a. Motor utilization voltages shall be in accordance with Electrical Basis of Design, document no. RLNG-

000-EL-BOD-0001, Clause 2.2.7.

Utilization voltages for Adjustable Speed Drive (ASD) supplied motors shall be selected according to duty.

2.2.5 Clause 7.5.3: IEC Clause 7.4, Three-Phase AC Motors Operating on Unearthed Systems

Add new paragraph.

Stator windings shall be fully insulated, the insulation shall not be graded.

2.2.6 Clause 7.6.1: IEC Clause 8.1 Thermal Class

Substitute Text:

Item a.

Class F with Class 155 (F)

Item b, Sub Clause i):

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REVISION: 1

PAGE 8 OF 9

Class B with Class 130 (B)

Item b, Sub Clause ii):

Class F with Class 155 (F)

2.2.7 Clause 7.8.2: IEC Clause 10.4.2, Minimum Information Requirements

Add additional text

The rating plates shall be of anticorrosive metallic material and shall be mounted on a fixed part of the motor frame.

The inscriptions on the stainless steel plate to be embossed and filled with black ink.

Clause 9: ADDITIONAL SPECIFIC REQUIREMENTS

2.2.8 Clause 9.7: Cooling,

Substitute Text

Item b. HV Motors, Sub Clause iii -1):

Class B with Class 130 (B)

and Item b. HV Motors, Sub Clause iii – 2):

Class F with Class 155 (F)

2.2.9 Clause 9.20.3: Motor Windings,

Substitute Text

Item a. Sub Clause i):

Class Y with Class 90 (Y)

Item a. Sub Clause ii):

Class F with Class 155 (F), Class B with Class 130 (B)

2.2.10 New Addendum: IEC 60034-12 Clause 5, Designation

The starting performance shall generally be design N, normal starting torque. For loads requiring high torque, motors of high starting torque equivalent to design NE shall be utilised.

2.2.11 New Addendum: IEC 60034-12 Clause 6.1, Torque Characteristics

The motor starting torque characteristic shall generally be in accordance with the tabulated data given in IEC 60034-12, namely tables 1, 3, 6 and 7 depending on the starting performance designation and protection concept.

The terms of Contract / Agreement No: CON22-146 shall apply for any disclosure of this document to any third party.

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REVISION: 1

PAGE 9 OF 9

3.0

APPENDIX

3.1

Appendix 1

AGES-SP-02-007: Induction Motor Specification

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THE CONTENTS OF THIS DOCUMENT ARE PROPRIETARY AND CONFIDENTIAL.

ADNOC GROUP PROJECTS AND ENGINEERING

INDUCTION MOTOR SPECIFICATION

Specification

APPROVED BY:

Abdulmunim Saif Al Kindy

NAME: Abdulmunim Al Kindy TITLE: Executive Director PT&CS EFFECTIVE DATE:

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10 / 63aibgll Jubgl J9j aSuiAbu Dhabi National Oil Companyclq-i_lADNOCdュnin」l auuc」l clLoul,.nubqf,898 c」pPO Box 898, Abu Dhabi.UAE adnoc.aeGROUP PROJECTS & ENGINEERING / PT&CS DIRECTORATE

CUSTODIAN ADNOC

Group Projects & Engineering / PT&CS Specification applicable to ADNOC & ADNOC Group Companies

REVISION HISTORY

DATE

REV.

22 Dec 20

PREPARED BY (Designation / Initial) Mohamed El Sadani/ Sr. Elect. Eng. & TA - AGP

REVIEWED BY (Designation / Initial) Ashwani Kumar Kataria/ A/MIHE

ENDORSED BY (Designation / Initial) Abdulla Al Shaiba/ VP-GPE

ENDORSED BY (Designation / Initial) Zaher Salem/ SVP-GPE

Reuben Yagambaram/ SPM-GPE

Group Projects & Engineering is the owner of this Specification and responsible for its custody, maintenance and periodic update.

In addition, Group Projects & Engineering is responsible for communication and distribution of any changes to this Specification and its version control.

This specification will be reviewed and updated in case of any changes affecting the activities described in this specification.

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11 / 63clq-iaiADNOCINTER-RELATIONSHIPS AND STAKEHOLDERS

The following are inter-relationships for implementation of this Specification:

i. ADNOC Upstream and ADNOC Downstream Directorates; and

ii. ADNOC Onshore, ADNOC Offshore, ADNOC Sour Gas, ADNOC Gas Processing. ADNOC LNG,

ADNOC Refining, ADNOC Fertil, Borouge, Al Dhafra Petroleum, Al Yasat.

The following are stakeholders for the purpose of this Specification:

i. ADNOC PT&CS Directorate.

This Specification has been approved by the ADNOC PT&CS is to be implemented by each ADNOC Group company included above subject to and in accordance with their Delegation of Authority and other governance-related processes in order to ensure compliance.

Each ADNOC Group company must establish/nominate a Technical Authority responsible for compliance

with this Specification.

DEFINITIONS

“ADNOC” means Abu Dhabi National Oil Company.

“ADNOC Group” means ADNOC together with each company in which ADNOC, directly or indirectly, controls fifty percent (50%) or more of the share capital.

“Approving Authority” means the decision-making body or employee with the required authority to approve Policies & Procedures or any changes to it.

“Business Line Directorates” or “BLD” means a directorate of ADNOC which is responsible for one or more Group Companies reporting to, or operating within the same line of business as, such directorate.

“Business Support Directorates and Functions” or “Non- BLD” means all the ADNOC functions and the remaining directorates, which are not ADNOC Business Line Directorates.

“CEO” means chief executive officer.

“Group Company” means any company within the ADNOC Group other than ADNOC.

“Specification” means this Induction Motor Specification.

“Onshore” means located on the mainland.

“Offshore” means located in an offshore location e.g. a platform or located on an island.

CONTROLLED INTRANET COPY

The intranet copy of this document located in the section under Group Policies on One ADNOC is the only controlled document. Copies or extracts of this document, which have been downloaded from the intranet, are uncontrolled copies and cannot be guaranteed to be the latest version.

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TABLE OF CONTENTS

GENERAL … 7

INTRODUCTION … 7

PURPOSE … 7

DEFINITIONS AND ABBREVIATIONS … 7

SECTION A - GENERAL … 10

REFERENCE DOCUMENTS … 10

INTERNATIONAL CODES AND STANDARDS … 10

ADNOC SPECIFICATIONS … 12

DOCUMENT PRECEDENCE … 12

SPECIFICATION DEVIATION / CONCESSION CONTROL … 13

DESIGN CONSIDERATIONS / MINIMUM DESIGN REQUIREMENTS … 13

DESIGN BASIS … 13

DESIGN PARAMETERS … 14

ENVIRONMENTAL / SITE DATA … 14

AREA CLASSIFICATION [PSR] … 15

SECTION B – TECHNICAL REQUIREMENTS … 18

BASE STANDARDS … 18

AMENDMENTS AND SUPPLEMENTS TO IEC 60034-1 … 18

IEC CLAUSE 1. SCOPE … 18

IEC CLAUSE 4. DUTY … 18

IEC CLAUSE 5. RATING … 18

IEC CLAUSE 6 SITE CONDITIONS … 19

IEC CLAUSE 7 ELECTRICAL OPERATING CONDITIONS … 19

IEC CLAUSE 8 THERMAL PERFORMANCE AND TESTS … 20

IEC CLAUSE 9 OTHER PERFORMANCE AND TESTS … 20

IEC CLAUSE 10 RATING PLATES … 20

IEC CLAUSE 11 MISCELLANEOUS REQUIREMENTS … 21

IEC CLAUSE 12 TOLERANCES … 22

IEC CLAUSE 13 EMC … 22

AMENDMENTS AND SUPPLEMENTS TO IEC 60034-14 … 22

IEC CLAUSE 8.1 LIMITS OF VIBRATION MAGNITUDE … 22

ADDITIONAL SPECIFIC REQUIREMENTS … 22

STARTING … 22

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13 / 631288.199.11.11.21.35.15.25.35.445672.12.27.17.27.37.47.57.67.77.87.97.107.11cq-i-i ADNOC

UNIT TRANSFORMER … 23

EFFICIENCY AND POWER FACTOR … 24

STATOR… 25

ROTOR SHAFT … 26

CRITICAL SPEEDS … 27

COOLING… 27

EXTERNAL FANS … 28

ENCLOSURE … 29

MOTOR HOUSING … 29

STATOR FRAME … 30

NOISE LIMITS … 30

TERMINAL BOX … 30

COUPLING … 32

EARTHING… 32

BEARINGS … 33

MOTOR MONITORING AND PROTECTION … 36

ANTI-CONDENSATION HEATERS … 38

MOTOR PURGE AND PRESSURISING UNIT … 39

ADDITIONAL REQUIREMENTS FOR ELECTRO SUBMERSIBLE PUMPS … 39

SECTION C – OTHER REQUIREMENTS … 42

DETAILS OF SCOPE SUPPLY … 42

QUALITY CONTROL AND ASSURANCE … 42

SUB-CONTRACTORS, SUB-SUPPLERS … 42

MATERIAL CERTIFICATION … 42

INSPECTION AND TESTING REQUIREMENTS … 43

GENERAL … 43

TEST REPORTS … 43

TYPE TESTS … 43

ROUTINE TESTING … 43

ADDITIONAL TESTS FOR HV MOTORS … 44

PERFORMANCE TESTING … 44

SPECIAL TESTS … 45

MOTOR ROUTINE TEST IN COMBINATION WITH UNIT TRANSFORMER … 45

SPARE PARTS … 45

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PAINTING, PRESERVATION AND SHIPMENT… 46

PAINTING … 46

SHIPMENT … 46

COMMISSIONING … 46

TRAINING … 46

DOCUMENTATION / MANUFACTURER DATA RECORDS … 46

GENERAL … 46

DELIVERABLES … 48

GUARANTEES AND WARRANTY … 48

SECTION D – STANDARD DRAWINGS & DATA SHEET … 49

DATA SHEET TEMPLATES … 49

STANDARD DRAWINGS… 49

SECTION E - APPENDICES … 50

AUXILIARY AND CONTROL EQUIPMENT ADDITIONAL REQUIREMENTS … 50

A1.1. SCOPE … 50

A1.2. NORMATIVE REFERENCES: … 50

A1.3. ENCLOSURE … 50

A1.4. WIRING AND TERMINATION … 51

A1.5. COLOUR CODING AND MARKING … 52

A1.6. EARTHING AND BONDING… 53

A1.7. LABELS AND IDENTIFICATION … 53

LIST OF TABLES

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15 / 631616.116.217181919.119.2202122APPENDIX A1.TABLE 1.1 LIST OF ABBREVIATIONS8TABLE 5.1 OUTDOOR AMBIENT AIR TEMPERATURE AND HUMIDITY14TABLE 5.2 INDOOR AMBIENT AIR TEMPERATURE AND HUMIDITY15TABLE 5.3 COOLING WATER AND LUBE OIL TEMPERATURES15TABLE 7.1 VOLTAGE LEVELS18TABLE 7.2 ACCEPTABLE TOLERANCESTABLE 9.1 HV MOTOR MINIMUM EFFICIENCY AT FULL LOAD24TABLE 9.2 HV MOTOR MINIMUM POWER FACTOR AT FULL LOADTABLE 19.1 DELIVERABLES48cq-i-i ADNOC

GENERAL

Introduction

This specification applies to high voltage and low voltage cage induction motors based on IEC 60034. This includes DOL start motors and ASD fed motors.

In addition, this specification contains the requirements for electro submersible motors or pump motors.

Purpose

The purpose of this specification is to specify the minimum requirements for the design, performance, materials, manufacturing, inspection, testing, documentation and preparation for shipment of induction motors.

For project and site-specific additional requirements, refer to supplementary requirements stated in respective project’s Purchase Requisition documentation.

Definitions and Abbreviations

The following defined terms are used throughout this Specification:

‘[PSR]’ indicates a mandatory Process Safety Requirement.

“COMPANY” means ADNOC, ADNOC Group or an ADNOC Group Company, and includes any agent or consultant authorised to act for, and on behalf of the COMPANY.

“CONTRACTOR” means the parties that carry out all or part of the design, engineering, procurement, construction, commissioning or management for ADNOC projects. CONTRACTOR includes its approved MANUFACTURER(s), SUPPLIER(s), SUB-SUPPLIER(s) and SUB-CONTRACTOR(s).

“MANUFACTURER” means the Original Equipment Manufacturer (OEM) or MANUFACTURER of one or more of the component(s) which make up a sub-assembly or item of equipment assembled by the main SUPPLIER or his nominated SUB-SUPPLIER.

‘may’ means a permitted option.

‘shall’ indicates mandatory requirements.

‘should’ means a recommendation.

“SUB-CONTRACTOR” means any party engaged by the CONTRACTOR to undertake any assigned work on their behalf. COMPANY maintains the right to review all proposed SUB-CONTRACTORs; this right does not relieve the CONTRACTOR of their obligations under the Contract, nor does it create any contractual relationship between COMPANY and the SUB-CONTRACTOR.

“SUPPLIER” means the party entering into a Contract with COMPANY to provide the materials, equipment, supporting technical documents and/or drawings, guarantees, warranties and/or agreed services in accordance with the requirements of the purchase order and relevant specification(s). The term SUPPLIER includes any legally appointed successors and/or nominated representatives of the SUPPLIER.

“SUB-SUPPLIER” means the sub-contracted SUPPLIER of equipment sub-components software and/or support services relating to the equipment / package, or part thereof, to be provided by the SUPPLIER. COMPANY maintains the right to review all proposed SUB-SUPPLIERs, but this right does

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not relieve the SUPPLIER of their obligations under the Contract, nor does it create any contractual relationship between COMPANY and any individual SUB-SUPPLIER.

“LATER” means ‘The document is not available yet. Each ADNOC COMPANY shall use their own relevant document’.

The abbreviations used throughout this specification are shown in Table 1.1 below.

Abbreviations

Table 1.1 List of Abbreviations

ADNOC

API

ASD

BEDD

DOL

EMC

FAT

GRP

HFCT

HVAC

I/O

IEC

IEEE

ISO

ITP

LED

LNG

NDE

NEMA

OEM

Alternating Current

Abu Dhabi National Oil Company

American Petroleum Industry

Adjustable Speed Drive

Basic Engineering Design Data

Current Transformer

Direct Current

Drive End

Direct online

Electromagnetic compatibility

Factory Acceptance Test

Glass Reinforced Plastic

High Frequency Current Transformer

High Voltage (> 1000 V)

Heating, Ventilation and Air-Conditioning

Input / Output

International Electrotechnical Commission

Institute of Electrical and Electronics Engineers

Ingress Protection

Intrinsically Safe

International Organisation for Standardisation

Inspection and Test Plan

Light Emitting Diode

Liquified Natural Gas

Low Voltage (≤ 1000 V)

Non Drive End

National Electrical Manufacturers Association

Original Equipment Manufacturer

Protective Earth

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Abbreviations

PSR

PTC

PVC

RCCB

RTD

RMS

SPM

THD

UAE

VPI

Process Safety Requirement

Positive Temperature Coefficient

Poly Vinyl Chloride

Residual Current Circuit Breaker

Resistance Temperature Detector

Root Mean Square

Shock Pulse Monitoring

Total Harmonic Distortion

United Arab Emirates

Vacuum Pressure Impregnation

Voltage Transformer

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SECTION A - GENERAL

REFERENCE DOCUMENTS

International Codes and Standards

The following Codes and Standards shall form a part of this specification. When an edition date is not indicated for a Code or Standard, the latest edition in force at the time of the contract award shall apply.

AMERICAN PETROLEUM INDUSTRY (API)

API Standard 617

Axial and Centrifugal Compressors and Expander-compressors.

API Standard 670

Machinery Protection Systems.

INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)

IEC 60034-1

IEC 60034-2-1

IEC 60034-2-2

IEC 60034-5

IEC 60034-6

IEC 60034-7

IEC 60034-8

IEC 60034-12

IEC 60034-14

IEC 60034-15

IEC 60034-18-1

Rotating electrical machines - Part 1: Rating and performance.

Rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles).

Rotating electrical machines - Part 2-2: Specific methods for determining separate losses of large machines from tests – Supplement to IEC 60034-2-1.

Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code). Classification.

Rotating electrical machines - Part 6: Methods of cooling (IC Code).

Rotating electrical machines - Part 7: Classification of types of construction, mounting arrangements and terminal box position (IM Code).

Rotating electrical machines - Part 8: Terminal markings and direction of rotation.

Rotating electrical machines - Part 12: Starting performance of single-speed three-phase cage induction motors.

Rotating electrical machines - Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher - Measurement, evaluation and limits of vibration severity.

Rotating electrical machines - Part 15: Impulse voltage withstand levels of form-wound stator coils for rotating AC machines.

Rotating electrical machines - Part 18-1: Functional Evaluation of Insulation Systems - General guidelines.

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IEC 60034-27-3

IEC 60034-29

Rotating electrical machines – Part 27-3: Dielectric dissipation factor measurement on stator winding insulation of rotating electrical machines.

Rotating electrical machines - Part 29: Equivalent loading and superposition techniques. Indirect testing to determine temperature rise.

IEC 60034-30-1

Rotating electrical machines - Part 30-1: Efficiency classes of line operated AC motors (IE code).

IEC 60038

IEC 60060-2

IEC 60072-1

IEC 60072-2

IEC 60076-5

IEC 60079

IEC 60085

IEC 60204-1

IEC Standard Voltages.

High-voltage test techniques - Part 2: Measuring systems.

Dimensions and output series for rotating electrical machines - Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080.

Dimensions and output series for rotation electrical machines - Part 2: Frame numbers 355 to 1000 and flange numbers 1180 to 2360.

Power Transformers - Part 5: Ability to withstand short circuit.

Explosive atmospheres - All Parts.

Electrical insulation - Thermal evaluation and designation.

Safety of machinery - Electrical equipment of machines - Part 1: General requirements.

IEC 60417-DB

Graphical symbols for use on equipment - Includes access to ISO 7000 Database.

IEC 60529

Degrees of protection provided by enclosures (IP Code).

IEC 60617- DB

Graphical symbols for diagrams (Database Snapshot).

IEC 60751

IEC 61000-2-4

IEC 61000-6-2

IEC 61000-6-4

IEC 62262

IECEx 02

Industrial platinum resistance thermometers and platinum temperature sensors.

Electromagnetic compatibility (EMC) - Part 2-4: Environment. Compatibility levels for low-frequency conducted disturbances.

Electromagnetic compatibility (EMC) - Part 6-2: Generic standards Immunity for industrial environments.

Electromagnetic compatibility (EMC) - Part 6-4: Generic standards Emission standard for industrial environments.

Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code).

IEC System for Certification to Standards Relating to Equipment for use in Explosive Atmospheres (IECEx System).

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INTERNATIONAL ORGANISATION FOR STANDARDISATION

ISO 15

ISO 281

ISO 1132-1

ISO 1132-2

ISO 1680

ISO 12944-2

ISO 12944-5

ISO 21940-11

Rolling Bearings – Radial Bearings – Boundary Dimensions, General Plan.

Rolling Bearings – Dynamic Load Ratings and Rating Life.

Rolling Bearings – Tolerances – Part 1: Terms and Definitions.

Rolling Bearings – Tolerances – Part 2: Measuring and gauging principles and methods.

Acoustics - Test Code for the Measurement of Airborne Noise Emitted by Rotating Electrical Machines.

Paints and varnishes. Corrosion protection of steel structures by protective paint systems, Part 2: Classification of environments.

Paints and varnishes - Corrosion protection of steel structures by protective paint systems, Part 5: Protective paint systems.

Mechanical vibration. Rotor balancing - Part 11: Procedures and tolerances for rotors with rigid behaviour.

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA MG-1

Motors and Generators.

ADNOC Specifications

Where a document is not available, each ADNOC COMPANY shall use their own relevant document.

AGES-SP-01-003

Structural Design Basis - On Shore Specification.

AGES-SP-02-001

Specification for Transformers.

AGES-SP-02-004

Specification for Adjustable Speed Drives.

AGES-SP-04-006

Instrument and Control Cable Specification.

AGES-SP-07-004

Painting and Coating Specification.

LATER

Basic Engineering Design Data (BEDD).

Tagging and Numbering Procedure.

Standard Drawings

LATER

Other References

LATER

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DOCUMENT PRECEDENCE

The specifications and codes referred to in this specification shall, unless stated otherwise, be the latest approved issue at the time of contract award.

It shall be the CONTRACTOR’s responsibility to be, or to become, knowledgeable of the requirements of the referenced Codes and Standards.

The CONTRACTOR shall notify the COMPANY of any apparent conflict between this specification, the related data sheet, the Codes and Standards and any other specifications noted herein.

Resolution and/or interpretation precedence shall be obtained from the COMPANY in writing before proceeding with the design/manufacture.

In case of conflict, the order of document precedence shall be:

a. UAE Statutory requirements.

b. ADNOC HSE Standards.

c. Equipment data sheet and drawings.

d. Project Specifications and standard drawings.

e. Company Specifications.

f. National / International Standards.

SPECIFICATION DEVIATION / CONCESSION CONTROL

Deviations from this specification are only acceptable where the MANUFACTURER has listed in his bid/quotation the requirements he cannot, or does not wish to comply with, and the COMPANY / CONTRACTOR has accepted in writing the deviations before the order is placed.

In the absence of a list of deviations, it will be assumed that the MANUFACTURER complies fully with this specification.

Any technical deviations to the Purchase Order and its attachments including, but not limited to, the Data Sheet and Narrative Specifications shall be sought by the MANUFACTURER only through Concession Request Format. Concession requests require CONTRACTOR’s and COMPANY’s review / approval, prior to the proposed technical changes being implemented. Technical changes implemented prior to COMPANY approval are subject to rejection.

DESIGN CONSIDERATIONS / MINIMUM DESIGN REQUIREMENTS

Design Basis

a. Motor and all accessories shall:

i. Have a design life of at least 30 years at rated output under the service conditions specified and

maintained according to SUPPLIER’s recommendation.

ii. Be suitable for 6 years continuous uninterrupted operation.

b. Motor, including controlgear assemblies and sub-components with less than 6 years proven

operational service shall only be used if approved by COMPANY.

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c. SUPPLIER shall state and include in the bid the necessary motor monitoring and maintenance

requirements to ensure continued reliable operation.

Design Parameters

Refer to the Motor Data Sheet.

Environmental / Site Data

Unless otherwise stated, motors shall be suitable for installation in an outdoor location.

5.3.1

Outdoor Conditions

Unless stated otherwise, the following site environmental data for outdoor conditions shall be used:

a. Without protective shelter, exposed to direct sunlight and solar gain of up to 1006 W/m 2,

temperatures of up to 85 °C.

b. Altitude: <1000 m above sea level.

c. Wind velocity for design: Refer to AGES-SP-01-003.

d. Environment corrosivity: Saliferous, sulphurous and dusty environment in conformance with

ISO 12944 parts 2 and 5 classes as below:

i. C5-I for onshore facilities less than 50 km from the coast.

ii. C3-I for onshore facilities greater than 50 km from the coast.

iii. C5-M for offshore facilities.

e. Rainfall: Extremely rare, but flash flooding may occur. Measurable rainfall usually occurs in an average of about 10 days per year with a rainfall intensity of 10 mm for 15 minutes. The rainfall is confined to winter and transitional months only.

f. Relative humidity:

i. Maximum:

97 % at 43 °C.

ii. Average:

60 % at 54 °C.

g. Ambient air temperature and humidity shall be as stated in Table 5.1 below.

Table 5.1 Outdoor ambient air temperature and humidity

Max ambient temp.

(°C)

Hottest monthly average temp. (°C)

Annual average temp.

Min temp.

Max relative humidity

(°C)

5

97 % at 43 °C

Onshore

Offshore

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5.3.2

Indoor Conditions

Unless stated otherwise, the following site environmental data for indoor conditions shall be used:

Table 5.2 Indoor ambient air temperature and humidity

Max ambient temp.

(°C)

Hottest monthly average temp. (°C)

Annual average temp.

Min temp.

Max relative humidity

(°C)

5

90 %

Onshore and offshore with HVAC

Onshore and offshore without HVAC for 8 hours

5.3.3

Cooling Water and Lube Oil Site Conditions

Unless stated otherwise, the following cooling water and lube oil site conditions shall be used:

Table 5.3 Cooling water and lube oil temperatures

Site Condition

Onshore located facilities

Offshore located facilities

Maximum water coolant output temperature

Maximum temperature rise of water coolant

Cooling water velocity range in tubes

See site specific data sheet

1 to 2.5 m/s

Fouling resistance

0.52 x 10-3 m2K/W (unless otherwise specified)

Permissible lube oil temperature rise

25 °C for motor rated speed < 5000 rpm 33 °C for motor rated speed ≥ 5000 rpm

Area Classification [PSR]

a. Motors and motor terminal boxes located in gas and vapour hazardous classified areas shall be

provided with protection, in accordance with IEC 60079, using the following methods:

i. Zone 2 Hazardous Area; LV Motors

Ex “ec”.
Ex “db” and terminal box “eb”.

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ii. Zone 2 Hazardous Area; HV Motors

Ex “db” and terminal box “eb”.
Ex “pzc” or Ex “pxb” and Ex “ec” (dual certification).

iii. Where motors are classified Ex”ec” in accordance with IEC 60079-7, with a rated output in excess of 100 kW for duties other than S1, S2, S6 or S9, shall have successfully passed the test in accordance with clause 6.2.3.2 of IEC 60079-7.

iv. Zone 1 Hazardous Area; LV Motors

Ex “db” and terminal box “eb”.

v. Zone 1 Hazardous Area; HV Motors

Ex “db” and terminal box “eb”.
Ex “pxb” and terminal box Ex “eb”.

b. Where motors with the protection concept Ex “pzc” or Ex “pxb” are selected:

i. Ex “pxb classified motors located in zone 1 classified areas shall be configured to trip on loss

of pressurisation.

ii. Dual certification motors located in zone 2 classified areas shall be configured to trip on loss of pressurisation after a time delay, maximum of 8 hours, and shall continue during this time to operate on Ex “ec” protection.

iii. Pressurisation pipework and valves shall be fabricated using SS 316L.

iv. Air filter shall be duplex type.

v. Motor rating and temperature class shall be independent of the purging system.

c. Motors located in dust hazardous areas shall also be provided with level of protection for the dust

group in conformance with IEC 60079-31.

d. Motors shall be suitable for operation in the gas group IIB and temperature class T3 unless more

arduous requirements are specified on the data sheet.

e. Certification shall be provided by either:

i. An approved IEC Ex Certification Body.

ii. An approved ATEX Notified Body if permitted by the COMPANY.

f. Certification shall not be invalidated by additional features such as:

i. Drain holes.

ii. Protective systems.

iii. Noise abatement measures.

g. Auxiliary devices mounted on the motor for protective, alarm or other purposes shall comply with the requirements of the appropriate type of protection for electrical equipment used in hazardous atmospheres.

h. Hazardous Area Requirements for ASD Fed Motors

i. The ASD fed motors shall meet one of the following criteria:

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1. The ASD fed motor shall be type tested for the rated duty with the ASD, or

Motors shall be provided with embedded temperature detectors, complete with certified

motor thermal protection system.

ii. The above applies to electronic soft start motors also.

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SECTION B – TECHNICAL REQUIREMENTS

BASE STANDARDS

Induction motors shall comply with the following standards:

IEC 60034-1.

IEC 60034-14.

c. Associated standards referenced in the above standards.

AMENDMENTS AND SUPPLEMENTS TO IEC 60034-1

IEC Clause 1. Scope

This specification is applicable to high voltage and low voltage cage induction motors.

IEC Clause 4. Duty

7.2.1

IEC Clause 4.1 Declaration of duty

Unless otherwise specified, the motor shall be designed for duty type S1: continuous running duty as defined in IEC 60034-1.

IEC Clause 5. Rating

7.3.1

IEC Clause 5.7 Co-ordination of voltages and outputs

a. COMPANY power supply voltage shall be in accordance with Table 7.1 below.

Motor Rating Range (kW)

Table 7.1 Voltage levels

Available Voltages

240 V

415 V

690 V

3.3 kV

6.6 kV

11 kV

< 0.18

≥ 0.18 < 160

≥ 160 < 315

≥ 315 < 1100

≥ 1100 < 3000

≥ 3000

Note 1

Notes:

The use of LV ASD driven or soft started motors is subject to COMPANY approval.

b. Where it becomes necessary, e.g. for ASD or unit transformer fed motors or for special application

such as submersible motors, different voltage level may be used subject to COMPANY approval.

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IEC Clause 6 Site conditions

7.4.1

IEC Clauses 6.3 to 6.5

Refer to Section 5.3 of this specification for modifications to IEC 60034-1 clauses 6.3 to 6.5.

7.4.2

IEC Clause 6.6 Standstill, storage and transport

a. Motor and all accessories shall be suitable for periods of standstill for up to 6 months within the 6

years continuous operation.

b. Following a period of stand still the motor shall, without requirement for additional inspection, be

suitable for another running period.

c. Bearings shall be protected against corrosion during transport and storage.

d. Products used for protection shall not require mechanical or manual cleaning of the bearings prior

to commissioning of the motor.

e. Rotors shall be secured during transport to avoid damage caused by axial or radial movement of

the rotor.

IEC Clause 7 Electrical operating conditions

7.5.1

IEC Clause 7.2.1 AC motors

a. Equipment shall be suitable for operation on a network supply with harmonic voltage THD up to 8 %

unless a more arduous duty is specified on the data sheet.

Individual harmonic distortion shall not exceed the limits of class 2 as defined in IEC 61000-2-4.

c. For adjustable speed driven motors, the SUPPLIER shall provide a coordinated insulation design that will be suitable for operation. Refer to AGES-SP-02-004, Electrical Adjustable Speed Drive System.

7.5.2

IEC Clause 7.3 Voltage and frequency variations during operation

The motor shall operate within Zone A unless otherwise specified in the data sheet.

7.5.3

IEC Clause 7.4 Three phase AC motors operating on unearthed supply

Motors shall be suitable for operation on an unearthed system with an earth fault on one phase for periods for:

a. Up to 8 hours for a single earth fault.

b. A total operating time of 125 hours in one year.

7.5.4

IEC Clause 7.5 Voltage (peak and gradient) withstand levels

HV motor stator windings shall be able to withstand the voltage (peak and gradient) withstand levels specified in IEC 60034-15.

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IEC Clause 8 Thermal performance and tests

7.6.1

IEC Clause 8.1 Thermal class

Insulation system for motor windings shall be class F in accordance with IEC 60085.

b. Unless otherwise specified in the data sheet, the stator temperature rise when operating at rated

output with maximum cooling medium, site coolant and ambient temperatures:

i. Shall not exceed Class B rise when operating in zone A.

ii. Shall not exceed Class F rise when operating in zone B.

7.6.2

IEC Clause 8.2 Reference coolant

Refer to Section 9.7.

IEC Clause 9 Other performance and tests

Refer to Section 14.

7.7.1

IEC Clause 9.4.1 Polyphase induction motors and d.c. motors

a. Transient Air-gap Torque.

i. Bracing of all motor end windings shall be designed to withstand a three-phase short circuit at

the motor terminals.

ii. The shaft and active iron core systems shall withstand two-phase short circuits.

iii. SUPPLIER shall state the maximum transient air gap torques during two and three phase short-

circuit at the motor terminals.

b. For LV motors, and where specified in the data sheet or other project documentation for HV motors,

during motor reacceleration:

i. The shaft and active iron core systems shall be designed for supply reconnection onto the full

residual voltage at full opposite phase difference.

ii. SUPPLIER shall state the maximum transient air gap torques during reconnection after power

interruption.

IEC Clause 10 Rating plates

7.8.1

IEC Clause 10.1 General

The rating plates shall be made of stainless steel and be fixed to a non-removable part of the frame.

7.8.2

IEC Clause 10.2 Marking

a. Add to the list:

i. COMPANY’s purchase order number.

ii. COMPANY’s TAG number.

iii. Efficiency at full load.

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iv. Insulation and temperature rise class.

v. Locked rotor current at rated voltage and frequency.

vi. Locked rotor torque at rated voltage and frequency.

vii. Allowable run-up time at rated voltage and 80 % rated voltage.

b. Additional Marking of ASD Fed Motor:

i. Operational speed range of the motor.

c. For LV Motors the values provided may be taken from a type test on an identical motor.

d. For HV Motors the values provided shall, as far as possible, be measured and shall be based on

the specified operating conditions.

If the rating plate is not easily accessible, the SUPPLIER shall supply a second plate to be mounted on the equipment in an accessible location.

f. For motors with a rated output > 250 kW, the following bearing information shall be provided on a

separate rating plate:

i. Bearing type.

ii. Size.

iii. Clearance.

iv. Shaft and housing fit for driving end and non-driving end.

v. Lubricant.

vi. Re-lubrication interval.

vii. Minimum and maximum allowable quantity of lubricant for the driving end and non-driving end

bearings.

viii. Oil pressure required, for force lubricated bearings.

g. For all motors an asset number plate shall be fixed on a non-removable part of the motor frame. Characters shall be 6 mm high, followed by a blank space of 15 x 65 mm. Marking plates shall be stainless steel.

h. All Hazardous Area Certified Motors shall include a dedicated Ex rating plate. This Ex rating plate shall be located on the motor, in such a manner that it is visible from the exterior both prior to installation and after installation. The Ex rating plate shall include all information as defined by IEC 60079-0.

IEC Clause 11 Miscellaneous requirements

7.9.1

IEC Clause 11.1 Protective earthing of machines

Refer to Section 9.15.

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IEC Clause 12 Tolerances

7.10.1

IEC Clause 12.2 Tolerances on values of quantities

Unless stated otherwise, tolerances on declared values shall be as specified in Table 21 of IEC 60034-1 with the modifications noted in Table 7.2 below.

Item

Table 7.2 Acceptable tolerances

Quantity

Tolerance

HV Motor Locked rotor current

+0 % of guaranteed value, no lower limit

LV Motor rated 55 kW and above Locked rotor current

+0 % of guaranteed value, no lower limit

IEC Clause 13 EMC

7.11.1

IEC Clause 13.1 General

Motors shall be suitable for installation in an industrial environment as defined by IEC 61000-6-4.

7.11.2

IEC Clause 13.2 Immunity

Motors shall comply with the immunity requirements as defined by IEC 61000-6-2.

AMENDMENTS AND SUPPLEMENTS TO IEC 60034-14

IEC Clause 8.1 Limits of vibration magnitude

a. Unless more arduous requirements are specified on the data sheet, motors shall comply with the

requirements of vibration grade A.

b. Maximum allowable vibration levels shall apply to:

i. All operating temperatures of the motor.

ii. All operating conditions between no-load and full load.

c. The vibration severity of the motor frame, including main terminal boxes, (excluding bearings) shall

not exceed 4.5 mm/s (RMS).

ADDITIONAL SPECIFIC REQUIREMENTS

In addition to the IEC Standards’ requirements, the cage induction motors shall comply with the following requirements:

Starting

a. Motors shall be designed for:

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i. Starting against load torque with the voltage at the motor terminals stated on the data sheet.

ii.

If no voltage is stated on the data sheet a value of 80 % voltage at the motor terminals shall be used.

iii. Motors shall be capable of re-acceleration under full load conditions following a power interruption not exceeding 0.2 seconds. A quadratic torque-speed characteristic for the driven equipment can be assumed.

iv. If the re-acceleration requirement above cannot be met, and for other driven equipment

torque-speed characteristics, SUPPLIER shall provide detailed information regarding the re-acceleration ability of the motor.

v. 3 consecutive starts with rated load inertia and the motor initially at maximum ambient

temperature.

vi. 2 hot consecutive starts with the motor initially at full load operating temperature.

vii. Motors shall be suitable for one of the starting duties listed below as stated on the data sheet:

Normal: maximum 1000 starts per year e.g. continuously running pumps, compressors etc.
Heavy: maximum 3000 starts per year e.g. conveyer systems, drain pumps etc.
Extra heavy: maximum 20000 starts per year e.g. hoisting equipment, cranes, etc.

b. A further 2 consecutive starts shall be possible after a cooling period of 30 minutes at standstill.

c. Motor may be assumed to decelerate under operating conditions to standstill between consecutive

starts.

d. HV motor starting current shall not be greater than 6.0 times the motor full load current unless a

lower limit is specified on the data sheet.

e. LV motors.

i. The starting performance and locked rotor apparent power shall comply with IEC 60034-12.

ii. For driven equipment which exhibit a quadratic torque-speed characteristic, design N shall

apply.

iii. The starting current for motors with a rated output >55 kW shall not be greater than 7.0 times

the motor full load current unless a lower limit is specified on the data sheet.

f. The accelerating torque shall not be less than 10 % of the full load torque throughout the speed

range from standstill to full speed.

g. SUPPLIER shall state in the bid the following information with 80 % and 100 % rated voltage applied

at motor terminals:

i. Run-up time at rated and 80 % voltage.

ii. Maximum allowable run-up time.

iii. “Hot” and “cold” maximum allowable stall time.

Unit Transformer

If a unit transformer is specified, it shall be:

i. Supplied in conformance with transformers specification AGES-SP-02-001.

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ii. Thermally and mechanically designed to withstand:

The number and frequency of motor starts required by this specification and associated

data sheet.

Re-acceleration duty, if required.

b. Transformer secondary shall be high resistance earthed. The resistor shall be rated to limit the maximum earth fault current to 10 A, but it shall be greater than three times the capacitive charging current of the unit transformer, motor, and the associated cables.

Efficiency and Power Factor

a. LV motors shall have a minimum efficiency at full load of class IE3 (premium efficiency) in

accordance with IEC 60034-30-1.

b. HV motors shall have a minimum efficiency as stated in Table 9.1 below.

Table 9.1 HV motor minimum efficiency at full load

Rating (kW)

Full Load Efficiency (%)

2 Pole

4 Pole

185

200

220

250

280

300

315

335

355

375

400 to 500

530 to 750

800 to 950

1000 and above

94.2

94.5

94.7

95.1

95.3

95.4

94.6

94.7

95.1

95.2

95.4

95.5

95.6

95.7

95.8

96.2

96.4

96.5

c. HV motors shall have a minimum power factor as stated in Table 9.2 below.

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Table 9.2 HV motor minimum power factor at full load

Rating (kW)

Full Load Power Factor

2 Pole

4 Pole

185 to 425

450 to 560

560 to 1000

1000 and above

0.9

0.91

0.85

0.86

0.87

0.88

Stator

a. Low Voltage Motors

i. The stator windings shall be of high-quality annealed copper wire with suitable ground and inter-

phase insulation.

ii. After installation of the coils, the windings shall be fully impregnated to achieve the following:

Restrict the movement of the coils.
To realise adequate heat dissipation.
To effectively seal the coils and to prevent deterioration from adverse conditions at site.

b. High Voltage Motors

i. Stator windings shall be star connected.

ii. Coils shall be made using rectangular copper conductors, covered by a mica tape or other

insulation material of similar dielectric strength and ageing properties.

iii. Wire windings shall not be used for voltages above 3.3 kV. Stator windings of machines with voltages ≤ 3.3 kV with special round wire windings with vacuum impregnated insulation are acceptable.

iv. All stator coils shall have identical insulation levels irrespective of the electrical location of the

coil, e.g. star point side or line end coil.

v. All windings shall be supported, braced and wedged over the total slot length to limit coil and

end winding vibration and subsequent cracking of the winding insulation.

vi. Bracing, blocking and wedging shall be secured to allow for the vibration and forces

experienced.

vii. Windings, including joints, connectors and leads to the main and star point terminations shall be able to withstand the dynamic forces which result from frequent starting and from re-starting against full opposite residual voltage.

viii. Magnetic slot wedges shall only be used if the SUPPLIER:

Demonstrates at least 5 years of continuous operation on past installations with sufficient

supply records.

Guarantees against failure of wedges for at least 5 years after commissioning of the motor.

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ix. Motors with rated voltage > 6 kV:

The main insulation material shall be mica.
All coils shall have anti-corona protection, achieved by means of a semi-conducting tape in

the slot part of the coil.

Where the rated voltage is in excess of 7 kV, all coils shall have stress grading.

x. Final insulation process shall be completed by use of one of the following methods:

Full VPI method.

Individual forming and curing of the slot parts of the windings with subsequent impregnation of the complete stator according to the VPI method.

Resin rich method only with approval of the COMPANY (not applicable for offshore located

facilities).

c. Additional Requirements for ASD Fed Motors

i. LV motors with frame size exceeding IEC size 315 shall have pre-formed stator coils.

ii. Windings shall be capable of withstanding the impulse voltage levels specified in IEC 60034-

15, with the following stipulations:

LV windings shall meet 4Un and 2Un voltage impulses for main and interturn insulation

respectively.

The risetime for interturn wave front shall be 0.1 ms.

If the SUPPLIER can confirm a longer front time on the converter output then the actual wave front shall determine the test risetime.

iii. The windings of motors with a motor voltage exceeding 2 kV shall have anti-corona protection

and stress grading.

Rotor Shaft

a. The shaft shall be made of one-piece, heat-treated steel.

b. Finished shafts shall not be welded on.

c. Shafts and spiders subjected to welding shall be post-weld heat-treated.

If non-contacting eddy current proximity probes are to be fitted, the surface finish of the shaft at the fitting point shall be as specified in API 670.

e. For all motors with flexible, over-critical rotor bearing systems, balancing shall be done at nominal

speed.

f. The shaft end shall be permanently marked with the indication ‘H’ to identify a half-key fitted in the

keyway when balanced.

g. Lead or similar ductile material shall not be used for balance weights.

h. The rotor shall be dynamically balanced in conformance with procedure in ISO 21940-11 with half

key fitted in the keyway. The minimum quality grade shall be G2.5.

In a corrosive atmosphere, the rotor shall be protected against corrosion by an appropriate treatment.

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Critical Speeds

a. General

i. Motors shall have a rigid, under critical rotor-bearing system with the first rotor bending critical

speed not lower than 125 % of the synchronous speed.

ii. At any critical speed, vibration of machine shall not exceed twice the values specified in

IEC 60034-14.

iii. The MANUFACTURER shall state the design value of the first critical speed on the data sheet.

b. HV Motors

If it is not possible to have an under critical rotor-bearing system, motors with flexible, overcritical rotor bearing systems may be supplied subject to COMPANY approval.

ii. Motors with flexible, over-critical rotor bearing systems shall comply with the following:

Critical speed shall be less than 80 % of motor synchronous speed.
Critical speed shall be greater than 125 % of motor synchronous speed.
Critical speeds which lie below the operating speed shall be determined by run up and coast

down of the motor during works test.

iii. For all flexible rotor motors a rotor dynamic analysis shall be undertaken by the SUPPLIER and the results submitted to the COMPANY. The analysis shall include evaluation of the damped critical speeds allowing for bearing oil film together with housing, end shield and bedplate stiffness effects.

c. ASD Fed Motors

i. ASD fed motors should have a rigid, under-critical rotor bearing system with the first critical

speed over 125% of the maximum operational speed of the ASDs.

ii. ASD fed motors with flexible, over-critical rotor bearing system shall have:

First critical speed below 80 % of the minimum operational speed of the ASD.
Second critical speed over 125 % of the maximum operational speed of the ASD.

iii. High speed ASD fed motors shall meet the “Dynamics” requirements specified in API 617.

iv. Analysis of high speed motor critical speeds shall be:

Submitted to the COMPANY for approval.
Confirmed during FAT.

Cooling

a. LV Motors

Unless stated otherwise in the data sheet, the cooling arrangement shall be IC4A1A1 (411) in accordance with IEC 60034-6.

b. HV Motors

i. Unless otherwise specified in the data sheet, the cooling arrangement should be selected from

the following methods in accordance with IEC 60034-6:

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IC 4A1A1 (411).

IC 5A1A1 (511).

IC 6A1A1 (611).

IC 6A1A6 (616).

ii.

If water-cooled is specified, the motor shall have method of cooling IC 8A1W7 (81W).

iii. Unless otherwise specified, 2x50% cooler assemblies shall be provided for critical motors.

Each 50 % cooler assembly shall permit operation at:

70% loading within class B temperature rise limits.
100% loading within class F temperature rise limits.

iv. Tubes and filters shall be accessible for cleaning.

v. Cooler assemblies shall be designed such that the natural frequency of vibration of the tubes is

not excited by the motor’s running frequency or its harmonics.

vi. Motors with air to water heat exchangers (IC 8A1W7 to IEC 60034-6) shall be provided with the

following:

Single tube copper nickel design if cooled by treated water.
Double tube titanium design if cooled by sea water.
Collection trays to prevent water leaking onto stator or terminations.
Cooler isolation valves.
Drain and vent valves.
Leak detection.
Have a 20 % surplus number of tubes to allow for plugging of leaking tubes.
The water box or header construction of heat exchangers shall be such that leaking tubes

can be readily plugged and all tubes are accessible for cleaning.

vii. Where more than one heat exchanger is installed and one of the heat exchangers can be out of operation, the SUPPLIER shall confirm that the motor will not develop hot spots because of changed internal air temperature and circulation.

viii. Motors with air to air heat exchangers (IC 6A1A1 or IC 6A1A6 to IEC 60034-6).

Cooling air inlets shall be protected by a corrosion resistant mesh screen suitable for a

marine environment. Mesh wire of galvanised steel is not acceptable.

Surfaces of the heat exchanger shall be provided with corrosion protection.

IC6A1A6 motors shall be equipped with N+1 motor driven fans.

External Fans

a. The external fan, and if applicable the separately mounted internal fan(s), shall be individually

balanced.

b. External fans shall be:

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i. Keyed onto the shaft.

ii. Of non-corroding material or shall be treated with a corrosion resistant coating. Aluminum or

Aluminum alloys shall not be used.

c. External fan covers shall be made of:

i. Metallic material and treated with a corrosion resistant coating.

ii. Non-metallic material if approved by the COMPANY.

iii. Aluminum or Aluminum alloys shall not be used.

d. External fan flow of cooling air shall be in the direction of the driven equipment.

e. Unidirectional fans shall be provided with an arrow permanently indicating the direction of rotation.

Indication by means of a painted or adhesive arrow is not acceptable.

g. LV motors rated ≤ 30 kW shall be exempt from the following requirements:

Individual balancing of the external fan and, if applicable, any separately mounted internal fans.

ii. Keying of the external fan to the shaft.

Enclosure

a. Degree of protection shall be:

i. Onshore located facilities.

IP 55 for the motor in conformance with IEC 60034-5.

IP 55 for auxiliary junction boxes in conformance with IEC 60529.

ii. Offshore located facilities.

IP 56 for the motor in conformance with IEC 60034-5.

IP 56 for auxiliary junction boxes in conformance with IEC 60529.

iii. Electro submersible motors.

IP 68 for the applicable parts in conformance with IEC 60034-5.

b. A condensation drain hole with a removable plug shall be provided at the motor enclosure low point

for non-submersible motors with frame size 160 and above.

c. Mechanical shock protection rating for motors shall be at least IK 08 as per IEC 62262.

Motor Housing

a. The materials used shall be selected to prevent contact corrosion.

b. Materials that are hygroscopic, persistent in or toxic to the environment or that are considered

potential carcinogens shall not be used.

c. Motors with a mass ≥ 25 kg shall have eye bolts, lugs or extension pieces clearly identifiable to be used for hoisting. The degree of protection, as specified in Section 9.9, shall be maintained if the lifting means are removed.

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d. Motors weighing over 600 kg shall have jacking bolts or facilities to lift the motor with the aid of a mechanical jacking device to facilitate alignment of the motor with the mechanical equipment.

Stator Frame

a. All motor frames and bearing end-shields shall be constructed of ferrous metals. Aluminium and

aluminium alloys shall not be used.

b. The frames shall have machined feet. If the foot is hollow, the machined feet shall have supporting

surfaces at four sides of each foot.

c. Corresponding mounting surfaces for horizontal motors shall be in the same plane and within a

tolerance of 0.15 mm per metre distance between surfaces after machining.

Noise Limits

a. Motors should preferably meet the maximum allowable noise limits by design and not by corrective

measures.

If motors cannot meet the maximum allowable noise limits by design, the SUPPLIER proposed corrective measures shall be subject to approval by the COMPANY.

c. The sound pressure level of the loaded motor, at distance of 1 m, shall not exceed 82 dBA for HV motors and 77 dBA for LV motors, measured in accordance with ISO 1680 when fed with sinusoidal voltage. In addition, 85 dBA shall be the maximum value for motors fed by an ASD.

In package configuration, the motor and package SUPPLIERs shall liaise to ensure that the electric motor will be designed in such a manner that the overall package noise level, as defined in each individual electric motor driven equipment package specification, is not exceeded.

Terminal Box

a. General

i. A terminal box of sturdy construction shall be provided with ample space for connecting the

cable as indicated on the data sheet.

ii. The SUPPLIER shall demonstrate that the specified cable can be terminated safely and

correctly.

iii. Cable gland entry thread shall be metric with the type and size detailed on the data sheet. All gland entries shall be fitted with stopping plugs to maintain the IP rating during shipment and storage.

iv. The gland plate for single core cables shall be a non-magnetic material. Aluminum gland plates

are not acceptable for offshore located facilities.

Inside the terminal box, an earthing clamp or bolt of adequate dimensions shall be provided for connection of the earth cable. The earthing facility shall be clearly marked with the appropriate symbol in compliance with IEC 60417-DB.

vi. The terminal markings and direction of rotation shall be in accordance with IEC 60034-8.

vii. The design of the terminal box shall be such as to prevent small parts from dropping into the

motor housing.

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viii. Auxiliary equipment fitted to the motor, e.g., temperature detectors, water leakage detectors, vibration monitors, shall be wired to auxiliary terminal boxes fitted to the side of the motor and comply with the above requirements.

ix. The auxiliary wiring shall be sized for the intended voltage and current and shall have a minimum conductor size of 2.5 mm² for power wiring and 1.5 mm² for instrument wiring e.g. RTD’s, PTC’s etc.

x. Sealing gaskets of polychloroprene or other appropriate material shall be included at terminal box joints for weatherproofing. The use of paint, grease or plastic compounds for this purpose is not acceptable.

b. LV Motors

i. All motors shall be equipped with terminal boxes of cast iron or steel.

ii. Contact of dissimilar metals which can cause corrosion shall be eliminated.

iii. Unless the hazardous area requirements specify otherwise, terminal blocks shall be of made of

synthetic resin.

c. HV Motors

i. The main terminal box and the star point box shall be fabricated from steel.

ii. Main terminal arrangement may use one of the following methods:

Phase insulated.
Phase segregated.
Phase separated.
Elastimold terminations.

iii. Terminal box shall be air insulated and provided with the following:

Space for installation of partial discharge sensors for motors 6.6 kV and above and surge

arrestors, where required.

Certified breather.
Pressure relief vent.
Synthetic resin type bushings.

iv. The short circuit rating of terminal box, bushings and terminations shall:

Be in excess of the short circuit value stated on the data sheet.
Be rated for a minimum of 1 second.

v. Discharge of exhaust products of an electrical breakdown from the relief vent shall be away

from personnel.

vi. Unless otherwise specified, the terminal box shall be located at the righthand side of the motor

facing the drive end. Top mounted terminal boxes are not acceptable.

vii. The star point terminal box shall be located on the opposite side to main terminal box. The star point terminal box, for motors with a rated output ≥ 3.5 MW or motors fed via a unit transformer (where differential protection specified on the data sheet), shall have adequate space for the

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installation of star side differential CTs. Details of CT’s shall be provided by the CONTRACTOR and made available to the SUPPLIER for installation in the terminal box.

viii. Separate terminal boxes shall be provided for all motor auxiliary systems including space heater and temperature detectors. The terminal boxes shall be separated from each other and from the main cable terminal box.

ix. The final position of the terminal boxes shall be fixed at Purchase Order stage.

x. The lowest part of the terminal box, including the cable gland shall not be lower than the lowest

part of the motor.

xi. Clamping devices shall be provided inside the main terminal box to separate and support the cable conductors and, if applicable, the winding end-tails. This is to ensure the ability to withstand the short-circuit current will be maintained after completion of the termination. Clamping device material shall be non-hygroscopic.

Coupling

a. The shaft ends shall be provided with a threaded hole or holes to facilitate the assembly or removal

of the coupling and bearing races.

b. The coupling shall be designed to, without permanent deformation, the maximum transient torques

which can be expected at the coupling from a short-circuit at the motor terminals.

c. Shaft extensions, keys and keyways shall be accordance with IEC 60072-1 and IEC 60072-2.

d. The coupling components shall be balanced individually, and the assembled coupling shall be

balanced as a unit by the driven equipment manufacturer.

e. For motors intended to drive directly, loads, which require a variable torque during each revolution, e.g., reciprocating compressors, the shaft end design and coupling shall be matched to the driven equipment.

Earthing

Earthing facilities shall comply with the following:

a. The base or feet of the main frame shall be provided with a steel boss welded or cast in place, located at a corner and capable of terminating an earth bonding cable using a bolt. This connection shall be clearly identified with the earth symbol.

b. Motors shall be fitted with bonding straps across joints within or between the main enclosure, the

bed plate and the heat exchanger.

If the main terminal box is not welded to the main frame, but bolted instead, the main terminal box shall be provided with an external earth bonding bolt and a bonding cable of suitable cross-section. This cable shall be run and bonded to a welded or cast boss close by on the main frame, or to the base of the motor and driven machine package.

d. All auxiliary low power terminal and junction boxes mounted on the main frame or base shall be

appropriately bonded with copper cable having green and yellow colour PVC insulating material.

Internal steel work, e.g. air guides, shall be bonded so that no sparking can occur across joints.

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Bearings

9.16.1 Bearing Selection

a. Bearings may be selected from the following types:

i. Grease lubricated rolling element bearings.

ii. Oil lubricated sleeve bearings.

b. Where grease lubricated rolling element bearings are used, two deep groove ball bearings shall be used except where high thermal expansion or radial loads dictate the use of roller, or a combination of ball and roller, bearings at the drive end.

c. Grease lubricated rolling element bearings shall be used when the following conditions apply:

i. The product of rated output and shaft speed complies with the formula:

P x n ≤ 1,000,000

where:

P = rated output (kW)

n = speed (min-1)

ii. The product of bearing bore diameter and shaft speed complies with the formula:

Db x n ≤ 255,000

where:

Db = bearing bore diameter (mm)

n = speed (min-1)

iii. Where any of the above criteria cannot be met, sleeve bearings shall be used.

9.16.2 Bearings of ASD Motors

a. The ASD motor SUPPLIER shall liaise with the driven equipment SUPPLIER to obtain information on low-speed barring requirements of the whole train to adapt the bearing lubrication system to this extra requirement.

b. The SUPPLIER shall provide in the bid detailed information on the requirement for bearing

insulation.

c. For test purposes the lubrication system shall allow for the motor to run uncoupled at maximum

speed for one hour.

9.16.3 Magnetic Bearings

a. The use of magnetic bearings shall be subject to the review and approval of COMPANY.

b. Magnetic bearings can be used, in large high-speed motors with driven equipment SUPPLIER

agreement.

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9.16.4 Bearing Insulation

a. Whenever the shaft voltage measured across the ends of the shaft exceeds 250 mV (RMS) for rolling element bearings or 400 mV (RMS) for sleeve bearings, bearings shall be insulated.

i. Bearing insulation shall be provided on all bearings (DE and NDE).

ii. The method of insulation shall be permanent and non-deteriorating during assembly and

disassembly of the bearing.

iii. An earthing connection, removable for test purposes, shall be provided at the coupling-end

bearing (DE).

iv. For single pedestal bearing motors, the insulation system shall be of ‘sandwich’ construction with two separate insulating layers. A removable earthing connection shall bridge one layer to ensure equipotential bonding of the middle conducting block.

Insulation layers which must be kept non-conducting during normal running shall bear a warning label reading: “Caution: Bearing must be kept insulated”.

c. The SUPPLIER shall submit with the bid detailed drawings showing the proposed insulation

arrangement.

9.16.5 Bearing Temperature

a. Bearings metal temperature shall not exceed:

i. For motor rated speed < 5000 rpm, 75 °C or 85 °C with bearing inlet oil temperatures of

respectively 50 °C or 60 °C.

ii. For motor rated speed ≥ 5000 rpm, 83 °C or 93 °C with bearing inlet oil temperatures of

respectively 50 °C or 60 °C.

b. For sleeve bearings with forced lubrication the lubricating oil temperature rise when passing through

the bearings and bearings housings shall not exceed 28 °K.

c. This criterion shall apply during all factory tests and during operation on site, whatever the speed

and load delivered by the motor.

9.16.6 Axial Forces

If a coupling exerts an axial force on the motor, e.g. gear type coupling, the maximum external axial force shall be calculated as follows:

F = (0.25 x 9550 x P) / (n x D)

where:

F = external axial force (kN)

P = rated output of motor (kW)

n = synchronous speed (min-1)

D = shaft end diameter (mm)

b. Motors used for these applications shall be designed for continuous operation with the calculated

maximum axial thrust. Compressor motor drivers with sleeve bearings shall be limited end float.

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c. The use of limited-end-float couplings shall be subject to approval by COMPANY. The design of

the limited-end-float coupling shall allow for uncoupled running.

9.16.7 Rolling Element Bearings

a. Bearings shall be in metric sizes and comply with ISO 15, ISO 1132-1 and ISO 1132-2.

b. Vertical motors driving direct coupled pumps shall have the thrust bearing at the non-drive end. Electric drive motors for vertical pumps shall be designed to carry the maximum thrust (up and down) which the pump may develop during starting or stopping or while operating at any capacity.

c. The use of angular contact bearings shall be restricted to vertical motors where the bearings must

accept high axial forces.

d. Bearings shall have a rated L10 lifetime in excess of 50,000 hours or 100,000 hours for IEEE Motors under conditions specified in the data sheet. Refer to ISO 281 for the requirements for calculating the bearing lifetime.

e. The minimum re-lubrication interval using L10 shall be 4000 hours for horizontal motors and 2000

hours for vertical motors.

f. Rolling element bearings shall have grease relief systems where new grease displaces the old grease which, together with any surplus, is automatically ejected to the outside of the motor casing.

g. Unless otherwise specified in the data sheet, lithium-based greases, shall be used in the bearings.

h. Non-compatible greases, such as those based on polyurea, shall not be used.

i. Relubrication shall be possible with the motor in operation and without dismantling parts.

j. Ball bearings shall have a C3 internal radial clearance.

k. Roller bearings may have a normal or C3 internal radial clearance.

l. Rolling element bearings shall be provided with testing points for shock pulse monitoring (SPM).

m. All rotors shall be secured during transport to avoid damage to the bearings.

n. Motors rated 37 kW and below may be equipped with sealed-for-life bearings pre-charged with

lithium-based grease.

9.16.8 Sleeve Bearings - HV Motors

a. Sleeve bearings shall be of the spherical seated, self-aligning type.

b. Radial sleeve bearings shall have replaceable liners or shells.

c. Sleeve bearing design shall suppress hydrodynamic instabilities and provide damping to limit rotor

vibration to the maximum specified amplitudes at both operating and critical speeds.

d. The sleeve bearing housing design shall permit replacement of the bearing liners without

disassembly of coupling or other motor parts.

e. Disc and wiper lubricated bearings may be used:

i. Designed for an oil change interval of at least 12 months.

ii. The oil change shall be possible without disassembly of any other motor parts.

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f. The SUPPLIER shall state in the bid the minimum oil change interval for the lubricating oil based

on the operating conditions specified in the data sheet.

g. For force-lubricated bearings, the SUPPLIER shall state in the bid both the minimum and design

recommended oil flow rates.

h. Where common lube-oil systems are used, the driven equipment SUPPLIER shall supply the

common lube-oil console.

i. The motor SUPPLIER shall inform the driven equipment SUPPLIER of the lubrication requirements

for the motor bearings.

j. All oil piping shall be flanged or welded.

k. Motors that drive hydrocarbon gas compressors shall not have their lube-oil systems combined with

that of the driven equipment unless the compressor is fitted with:

i. Dry gas seals to prevent gas entering the lube-oil.

ii. Means to prevent lube-oil penetrating the dry gas seals.

l. Bearings shall be equipped with an oil level or flow indicator, visible without disassembly of any

motor parts or noise abatement material.

m. Bearings with a ring lubricating system shall allow visual inspection of the oil ring operation while

the motor is running.

n. Bearings shall be designed to start the motor without the aid of oil jacking.

o. The bearing design shall limit axial float either during uncoupled running or due to unbalanced axial

forces during start-up.

p. The free float allowed by the bearings shall be a minimum of ± 3 mm, and a maximum of ± 6 mm,

from the geometrical centre.

q. White metal liners and shells shall be protected against corrosion during transport and storage. Products used for protection shall not require mechanical or manual cleaning of the bearings prior to commissioning of the motor.

r. Rotors shall be secured during transport to avoid damage caused by axial or radial movement of

the rotor.

9.16.9 Oil Mist Lubrication

If specified in the data sheet the motor shall be suitable for oil mist lubrication. Oil mist lubrication will only be applied on HV motors for refinery applications. The SUPPLIER shall indicate in his bid the minimum motor size which can practically be equipped with oil mist lubrication.

b. Details of the oil mist piping and nipple selection shall be approved by the COMPANY.

Motor Monitoring and Protection

9.17.1 HV Motors

a. Partial Discharge Monitoring

i. HV motors with an input voltage ≥ 6.6 kV shall be provided with HFCT partial discharge sensors.

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ii. HFCT’s shall be installed in the motor terminal box and control wiring wired to a separate

terminal box on the motor frame.

iii.

If motor is located within a hazardous area, sensors and termination arrangement shall be certified for use in the hazardous area.

iv. Capacitor couplers can be used for partial discharge measurement where necessary for large

motors.

v. Each group of motors shall be supplied with the necessary hazardous area certified test

equipment, complete with leads, to capture the partial discharge readings.

b. Differential Protection

Differential protection shall be provided for all motors with a rated output ≥ 3.5 MW. In addition, where specified on the datasheet, motors fed via unit transformer shall also be provided with differential protection.

c. Temperature Monitoring and Protection

RTD’s for windings, bearings and air circuit temperature monitoring shall be:

i. 3 wire type, PT-100 platinum resistance elements to IEC 60751.

ii. Wired to transmitters within a junction box located on the motor frame.

iii. Located to detect the highest temperature.

d. Air Temperature and Water Leakage Detectors

i. For air-to-air cooled motors, with cooling methods IC 6A1A1 and IC 6A1A6, a cooling air RTD temperature detector shall be provided to measure the temperature of the internal cooling air leaving the heat exchanger.

ii. For air-to-water cooled motors, with cooling method IC 8A1W7, the following auxiliary devices

shall be provided:

Resistance temperature detector (RTD) elements to measure the temperature of the

internal cooling air as it enters and leaves the heat exchanger.

A water leakage detector for each heat exchanger unit.

e. Stator winding RTD’s shall be provided as follows:

i. A minimum of 2 simplex RTD’s per phase. In addition, 2 spare wired simplex RTDs per phase

shall be provided.

ii. Separate RTD’s for motor protection and condition monitoring.

iii. RTD’s shall be supplied with either:

Independent test confirmation that the RTD’s do not require over-voltage surge arresters.

Over-voltage surge protection for the RTD’s installed on the auxiliary terminal box.

f. Sleeve bearings shall be provided with 2 RTD temperature detectors.

g. Bearing RTD’s shall not short circuit bearing insulation.

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9.17.2 ASD or Soft-started LV Motors

a. LV motors not type tested for their rated duty with the ASD or Soft starter shall be equipped with a minimum of 2 embedded temperature detectors per phase. In addition, 2 spare embedded temperature detectors per phase shall be provided.

b. Winding temperature detectors for motors < 100 kW shall be thermistor type (PTC).

c. Winding temperature detectors for motors ≥ 100 kW shall be PT100 resistance temperature detector

type (RTD).

d. All temperature detectors shall be wired to a separate terminal box on the motor frame.

9.17.3 Vibration Monitoring and Protection

a. Motors shall be provided with vibration monitoring and protection where the driven equipment is provided with vibration monitoring and protection or the requirement is specified in the motor data sheet.

Where motor vibration monitoring and protection is required the following shall apply:

i. Vibration monitoring and protection shall be provided for radial shaft vibration monitoring.

ii. X-Y probes shall be provided for each side of the bearing.

iii. Radial Vibration protection shall trip the motor if any 2 of the drive or non-drive end bearing

probes detect the ‘high high’ trip level.

iv. Logic shall consider probe “not OK” as vote to trip.

v. Vibration probes shall be non-contacting eddy current proximity probes provided in

conformance with API 670.

vi. Type and model number of the required probes shall be subject to approval by the COMPANY.

vii. Probes shall be located at 90° to each other and mounted in such a way that replacement is

possible while the motor is running.

viii. Rotors shall be checked for runout and the correct location of the probe elements shall be

determined before installation in the motor housing.

Anti-condensation Heaters

a. Anti-condensation heaters shall be provided for HV motors and HV motor terminal boxes.

b. Where required, anti-condensation heaters for LV motors will be specified on the data sheet.

c. Heaters shall:

i. Be a fully insulated design and suitable for operation on the voltage stated on the data sheet.

ii. Be arranged to provide uniform heating.

iii. Maintain the temperature of the motor 5 °C above ambient temperature. Surface temperatures of the heater element, or motor enclosure, shall not exceed the limit specified for motors in hazardous areas.

iv. Be wired to terminals in a separate heater terminal box mounted on the motor frame.

v. Be wired to terminals in the main terminal box for motors with rating ≤ 75 kW provided:

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1. A prior consent of COMPANY is taken.

The heater connection has an IP2X rating.
There are adequate barriers installed between the main motor and heater terminals.
There is ample space to connect all cables.
A warning label is installed to indicate that there are two different supplies in the terminal

box.

vi. Be provided with a prominent warning label stating: “Warning - Circuit May Be Live when motor

is stationary”.

Motor Purge and Pressurising Unit

a. Where motors with the protection concept Ex “pzc” or Ex “pxb” are selected on the data sheet, a motor purge and pressurising system in accordance with IEC 60079-2 shall be provided by the motor SUPPLIER.

b. The system shall ensure automatically the necessary purging cycle prior to the motor start and

maintain the minimum required pressurisation during motor operation.

c. No external power supply shall be required. All the controls shall be performed from the instrument

air supplied by others. The initiation of purging cycle shall be manual.

d. A 40 μm or lower air inlet filter with maintenance bypass shall be provided.

e. On loss of positive pressure, the system shall be capable of initiating alarm and trip signals.

f. All hardware for the system shall be mounted in a control cabinet.

g. The control cabinet shall be suitable for outdoor mounting with degree of protection IP 55 for

onshore locations and IP 56 for offshore locations in accordance with IEC 60529.

h. For detailed requirements of the control cabinet refer to APPENDIX A1.

Additional Requirements for Electro Submersible Pumps

9.20.1 General

Electro submersible pumps shall, as a minimum, be supplied complete with:

a. Vertical submersible electric motor.

Interface junction box for connecting external cables.

c. All interconnecting power, instrument, and control cables including cable support system.

d. Cable glands and lugs.

e. Earthing facilities.

f. Motor leakage detection system complete with a pipe from the motor to sole plate and a braided

rubber hose and clamps to fix to column pipe.

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9.20.2 Starting

The motor shall be capable to start the pump with open discharge valve to the downstream piping and equipment system.

9.20.3 Motor Windings

a. Motor winding insulation shall be:

i. Class Y for water filled motors.

ii. Equivalent to Class F (as a minimum) with allowable temperature rise as per Class B for oil

filled motors.

b. Motor windings shall be:

i. Designed to avoid joints submerged in the process or filling fluids.

ii. Adequately braced to permit the reapplication of the rated voltage across the windings with a

minimum of 33 % residual voltage.

9.20.4 Motor Cooling

a. The submersible motor shall be of the ‘wet’ type, where the stator is flooded in coolant suitable for

the environmental conditions (either oil or a water/glycol mixture).

b. Motors shall have forced oil circulation. Proven passive heat exchangers may be acceptable for

water filled motors subject to COMPANY approval.

c. The pump section of the assembly shall be equipped with a shroud to ensure that the passage of water between the outer diameter of the motor and inside diameter of the shroud produces enough water movement across the motor body to dissipate produced heat.

9.20.5 Motor Construction and Materials

a. All parts which come in contact with the liquid pumped, shall be chemically and thermally resistant

to this liquid over the lifetime of the motor.

b. The motor stator casing (wrap) and end caps shall be manufactured of aluminium bronze compatible with the pump unit. Other materials proposed shall be subject to approval by the COMPANY.

c. Submersible motors shall be provided with mechanical seals.

d. A stainless steel plate showing the direction of rotation shall be provided and secured to the motor

by stainless steel pins.

9.20.6 Motor Bearings

a. Radial bearings shall be of the sleeve type.

b. Motor bearings shall be suitable for reverse running.

c. The ‘wet’ type motor assembly shall incorporate a tilting pad thrust bearing designed to carry, as a minimum, double the expected maximum thrust (in either direction) that the pump could develop while starting, stopping or operating at any capacity.

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d. The maximum thrust load shall be determined with double the pump internal clearances assumed

and factoring in water hammer effect during pump start-ups.

9.20.7 Cables and Junction Boxes

a. Cables for submerged pumps installed in a hazardous area shall include measures to prevent gas

migration.

b. The cables shall be flame retardant and chemically and thermally resistant to the liquid they are

likely to come in contact with.

c. All cables shall be single length, no joints are acceptable.

d. Cables shall enter the junction box from the bottom.

e. The junction box shall be manufactured from type 316L stainless steel or fibreglass-reinforced

polyester.

f. Unless otherwise specified the junction box shall be Ex “eb” certified.

9.20.8 Motor Monitoring and Protection

a. The windings of the electric motor shall be provided with at least two thermistor type temperature

detectors (PTC) per phase.

b. The switching temperature of these thermistors shall be in accordance with the highest permissible

hot-spot temperature for the class of insulation of the materials used for the windings.

c. Submersible motor shall be provided with a leak detection system. The leak detection system shall

be wired to the control logic as start permissive and trip the motor in case of a leak.

d. Submersible motors shall be provided with a pressure equalising system or an external oil/water

circulating system.

9.20.9 Testing

Motors shall be tested in accordance with the submerged stator test outlined in NEMA MG-1.

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SECTION C – OTHER REQUIREMENTS

DETAILS OF SCOPE SUPPLY

The scope of supply of shall include:

a. Detailed design.

b. Supply of materials.

c. Factory and site inspection and testing.

d. Documentation including certification.

Installation, commissioning and start-up assistance; where specified in the requisition.

f. Spare parts for 2 years operation.

Refer to the project requisition document for detailed requirements.

QUALITY CONTROL AND ASSURANCE

Equipment shall only be purchased from SUPPLIERs approved by ADNOC Category Management. This approval indicates that the SUPPLIER has an approved quality management system and a proven track record in supply of this equipment type.

SUB-CONTRACTORS, SUB-SUPPLERS

The SUPPLIER shall assume unit responsibility and overall guarantee for the equipment package and associated equipment.

The SUPPLIER shall transmit all relevant purchase order documents including specifications to his SUB- SUPPLIERs and SUB-CONTRACTORs.

It is the SUPPLIER’s responsibility to enforce all purchase order and specification requirements on his SUB-SUPPLIERs and SUB-CONTRACTORs.

The SUPPLIER shall submit all relevant SUB-SUPPLIER and SUB-CONTRACTOR drawings and engineering data to the CONTRACTOR.

The SUPPLIER shall obtain and transmit all SUB-SUPPLIER and SUBCONTRACTOR’s warranties to the CONTRACTOR/COMPANY, in addition to the system warranty.

MATERIAL CERTIFICATION

Not applicable.

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INSPECTION AND TESTING REQUIREMENTS

General

a. Before leaving the SUPPLIER’s works, each item of equipment shall be inspected and tested in

accordance with the relevant IEC Standards as listed in Section A of this specification.

b. The SUPPLIER shall provide an Inspection and Testing Plan (ITP) at least 8 weeks’ notice prior to

the testing date.

c. The ITP shall be submitted for review and acceptance by the COMPANY and include Witness and

Hold points in the programme for SUPPLIER, CONTRACTOR, and COMPANY.

d. The COMPANY/CONTRACTOR or his nominee will inspect the equipment and witness the required

tests indicated in the Requisition at the time the equipment is offered for final inspection.

e. A detailed test procedure of factory tests shall be submitted at least 3 months in advance of any testing, detailing the proposed inspection, testing and witness testing programme throughout the design and build of the equipment.

f. Test certificates for each motor shall be submitted prior to delivery for approval.

Test Reports

a. Test reports in accordance with the relevant IEC standards including the following shall be

submitted to COMPANY.

i. The design values.

ii. The tolerance values.

iii. The real values as measured, including, if any, the intermediate values causing provisional

refusal.

b. SUPPLIER shall compile the records of all inspections and tests including routine tests and special

tests in one document and shall submit as part of technical documentation.

Type Tests

a. SUPPLIER shall submit the type test certificates for each item of equipment for test as required in

the applicable IEC standards.

b. Type test certificates shall be submitted with the bid.

c. Test certificates shall be from an internationally recognised, independent testing authority, and shall

be subject to COMPANY acceptance.

Routine Testing

All HV and LV motors shall be subjected to the following routine tests:

a. Winding resistance (cold).

b. No Load Current.

c. No Load losses.

d. Direction of rotation.

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e. Vibration test in conformance with IEC 60034-14.

Insulation resistance test on:

i. Motor windings.

ii. Heaters.

iii. Built in temperature detectors.

iv. Bearing insulation.

g. Dielectric test on:

i. Motor windings.

ii. Heaters.

iii. Built in temperature detectors.

h. Sleeve bearing inspection (if applicable).

i. Physical inspection for compliance with this technical specification and the data sheet.

j. Dimensional checks.

Additional Tests for HV motors

All HV motors shall be subjected to the following additional tests:

a. Polarisation Index test on stator windings.

b. Partial discharge and tan δ measurements (applicable to motors 6.6 kV and above).

c. Pressure test on water coolers (applicable to motors with cooling method IC 8A1W7 only).

Performance Testing

a. HV and LV motors shall be subject to performance testing.

b. The performance tests for HV motors shall be performed on a minimum of one of each group of

identical motors supplied. For LV motors a type test on an identical motor is acceptable.

c. The performance tests shall comprise of:

i. Efficiency at full load and ¾ load, at rated power factor in conformance with IEC 60034-2 parts

1 and 2.

ii. Slip at full load and ¾ load.

iii. Power factor at full load and ¾ load.

iv. Temperature rise test in conformance with one of the methods defined in IEC 60034-29.

v. Shaft voltage measurement.

vi. Locked rotor current and torque.

vii. Motor torque-speed curve.

viii. Noise test.

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Special tests

Where specified on the data sheet the following tests shall be completed:

a. Sample coil voltage withstand test in conformance with IEC 60034-15.

b. Overspeed test.

c. Sealed winding stator test in conformance with NEMA MG-1 Section 20.18.

d. EMC tests in conformance with IEC 61000-6-4.

Motor Routine Test in Combination with Unit Transformer

Where specified in the data sheet:

a. The motor in combination with the associated unit transformer shall be given a routine test as

specified in Section 14.4.

b. Transformer routine tests as specified in the ADNOC transformer specification AGES-SP-02-001

shall also be carried out in combination with the motor.

c. The transformer shall be subjected to the following:

i. Measurement of reactance and resistance.

ii. Calculated resistance and reactance at 20 °C.

iii. Noise test.

iv. For motor unit transformers: Short-circuit test, IEC 60076-5.

If no short-circuit type test certificate for an identical transformer is available, a simulated transformer/motor on-load start test, with the transformer at its normal operating temperature, shall be performed. The test procedure shall be:

i. Measurement of reactance at normal operating temperature.

ii. Three tests with a current corresponding to the motor starting current. The duration of the test

shall be equal to the running-up time of the motor.

iii. Measurement of reactance after the simulated starts. The measured value shall not deviate by

more than 2 % from the value prior to tests.

SPARE PARTS

a. The SUPPLIER shall propose:

i. A list of commissioning spare parts.

ii. A list of 2 years operation spare parts.

iii. A list of special tools required for erection, commissioning and maintenance.

b. Special tools required for erection, commissioning and maintenance shall be shipped together with

the motor.

c. Each spare part shall be separately packed and clearly identified for storage management.

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PAINTING, PRESERVATION AND SHIPMENT

Painting

a. Surface preparation and painting shall be in accordance with the COMPANY standard,

AGES-SP-07-004 Painting and Coating Specification.

b. Alternatively, SUPPLIER may propose the standard for enhanced protection against corrosion in outdoor climates. The paint system applied shall provide adequate protection against the adverse effects of the climatic conditions specified. Full details of SUPPLIER’s painting specification shall be provided with the bid for COMPANY approval.

c. The equipment shall be fully tropicalised.

d. Colour shade shall be in accordance with the COMPANY standard, AGES-SP-07-004 Painting and

Coating Specification.

Shipment

SUPPLIER’s standard packing shall be acceptable unless otherwise stated in the COMPANY’s preservation and export packing procedure and on data sheet. Installation of impact recorders on individual packing boxes and containers shall be included.

COMMISSIONING

The requirements of commissioning shall be included in the requisition document.

TRAINING

The requirements of commissioning shall be included in the requisition document.

DOCUMENTATION / MANUFACTURER DATA RECORDS

General

a. SUPPLIER shall submit the type and number of drawings and documentation for CONTRACTOR’s

authorisation or information as listed in the Material Requisitions and Purchase Orders.

b. Schedule of documents and data submittal shall be as agreed in the purchase order.

c. Comments made by CONTRACTOR on drawing submittal shall not relieve the SUPPLIER of any responsibility in meeting the requirements of the specifications. Such comments shall not be construed as permission to deviate from requirements of the Purchase Order unless specific and mutual agreement is reached and confirmed in writing.

d. Each drawing shall be provided with a block in the bottom right-hand corner incorporating the

following information:

i. Official trade name of the SUPPLIER.

ii. SUPPLIER’s drawing number.

iii. Drawing title giving the description of contents whereby the drawing can be identified.

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iv. A symbol or letter indicating the latest issue or revision.

v. Purchase order number and item tag numbers.

e. Revisions:

i. Document and drawing revisions shall be identified with symbols adjacent to the alterations.

ii. A brief description of each revision shall be given in tabular form.

iii.

If applicable, the authority and date of the revision shall be listed. The term “Latest Revision” shall not be used.

f. All documents shall show the relevant order number, item tag numbers and SUPPLIER’s references

and shall be distributed as specified in the purchase order documents.

g. Graphic symbols for electrical diagrams shall be according to IEC 60617-DB. Device code numbers

shall be as per ANSI C-37.2.

h. All documents and drawings shall be in English.

Installation, operating and maintenance manuals shall be arranged as follows:

i. The front cover, spine and inside page shall state the purchase order number and SUPPLIER’s

reference number.

ii. The inside front page shall carry an index listing the contents of each section of the manual.

iii.

Individual sections shall be completed and shall refer to the equipment actually supplied.

iv. Published data shall also be included, including published data for bought-in items.

v. Full detail for installation setting up shall be included.

vi. Recommended test data shall be stated, covering initial and also regular testing, i.e., values for

high voltage, AC or DC. etc., will be given.

vii. Items requiring regular inspection, checking, testing and maintenance shall be listed and the

time scale clearly indicated.

viii. Important items shall be cross referenced to other part of the manual as necessary.

ix. Fault finding chapter shall be included.

x. As built panel wiring diagram.

xi. Parts and equipment lists.

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Deliverables

Unless otherwise stated in the inquiry/order documents, the SUPPLIER shall at least supply the documents as listed in Table 19.1. The language used shall be ENGLISH.

Table 19.1 Deliverables

With Bid:

Preliminary general arrangement drawing(s)

Minimum clearances around the assemblies for ventilation and safety during operation and maintenance

Completed data sheet(s)

Type test certificate(s)

Hazardous area certificate(s)

List of spare parts (commissioning, insurance & two years operations)

After placement of order:

Final assembly arrangement drawing showing main circuits, main dimensions, foundation plan, total weight, shipping section and cable termination arrangement details

Minimum clearances around the assemblies for ventilation and safety during operation and maintenance

Rating plate and nameplate drawings

Schematic and connection diagrams covering all equipment pertaining to the motor

Completed data sheet(s)

Performance curves

Quality Plan

Paint Specification

Type test certificate(s)

Hazardous area certificate(s)

Test procedures and test description

Test report of the final routine testing. Test values shall be furnished with test certificates

List of spare parts (commissioning, insurance and two years operations)

Paint Specification

Transport, installation, commissioning, operation and maintenance instructions, limited and specific to the assembly and its components

GUARANTEES AND WARRANTY

The requirements of guarantees and warranty shall be included in the requisition document.

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SECTION D – STANDARD DRAWINGS & DATA SHEET

DATA SHEET TEMPLATES

LATER.

STANDARD DRAWINGS

Not Applicable.

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SECTION E - APPENDICES

AUXILIARY AND CONTROL EQUIPMENT ADDITIONAL REQUIREMENTS

A1.1.

Scope

This Appendix specifies the requirements for the auxiliary and control equipment such as enclosures and components, anti-condensation heaters, wiring, earthing, identification labels and markings, colour coding etc., where these are not fully covered by the main specification.

A1.2.

Normative References:

INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)

IEC 60204-1

IEC 60332

IEC 60445

IEC 60754-1

IEC 61034‑2

IEC 61439-1

IEC 61439-2

Safety of machinery - Electrical equipment of machines - Part 1: General requirements.

Tests on electric and optical fibre cables under fire conditions - All parts.

Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals, conductor terminations and conductors.

Test on gases evolved during combustion of materials from cables - Part 1: Determination of the halogen acid gas content.

Measurement of smoke density of cables burning under defined conditions - Part 2: Test procedure and requirements.

Low-voltage switchgear and controlgear assemblies – Part 1: General rules.

Low-voltage switchgear and controlgear assemblies – Part 2: Power switchgear and controlgear assemblies.

In addition, the auxiliary and control equipment and components shall comply with the relevant IEC standards.

A1.3.

Enclosure

a. The auxiliary control panels shall be:

i. Fabricated sheet steel, or GRP where specified in the data sheet.

ii. Painted and finished in accordance with the SUPPLIER as well as COMPANY standard for

indoor or outdoor installation as applicable whichever is stringent.

iii. Have bottom cable entry, unless specified otherwise on the data sheet.

iv. Provided with LED type panel light, operated by a door switch, unless specified otherwise.

v. Pad-lockable incoming supply switch where applicable.

vi. Equipped with an anti-condensation heater.

b. Floor mounted panels shall be rigid, self-supporting, and installed on a base frame.

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c. Enclosures and doors shall be fabricated of heavy gauge steel of minimum thickness of 2 mm with

structural reinforcing members as 3 mm minimum.

d. Wall mounted panels shall be suitable for bolting to a frame to be fixed to the wall.

e. Components mounted within the control panels shall be din rail mounted on a removable back-plate.

f. Door mounted metering, protection, and indication components shall be flush mounted.

A1.4. Wiring and Termination

a. For

the

instrument and control cables, wiring, and

termination requirements, refer

AGES-SP-04-006.

b. Wire conductor material shall be stranded copper.

c. Minimum conductor size shall be as below.

i. Power circuit: 2.5 mm².

ii. Control circuit: 1.0 mm².

iii. Data communication: Unless otherwise specified the minimum conductor size for data

communication shall be as per Table 5 of IEC 60204-1.

d. Wire insulation shall be:

i. 450 / 750 V grade for power circuits.

ii. 250 V grade for instrumentation.

e. Wiring, including accessories and trunking shall be as below:

i. Flame retardant complying with IEC 60332 series standards.

ii. Where specified on data sheet these shall be low smoke and halogen free complying with the

following requirements:

Minimum light transmission value of 60 %, conforming to IEC 61034‑2.
Maximum halogen gas emission of 0.5 %, when tested in accordance with IEC 60754‑1.

f. Cables shall be run in trunking or conduits. Separate trunking shall be provided within the panel for CONTRACTOR wiring to be completed at site, where terminal blocks are not mounted adjacent to incoming cable glands.

g. Trunking fill shall be limited to maximum 70 %.

h. Gland plates shall be undrilled metallic compatible with cable armour and panel material.

i. Terminals and lugs shall be one of the following:

i. Crimped bootlace type lugs.

ii. Crimped ring type copper lugs.

iii. Screw-less push-in type terminals subject to COMPANY approval.

j. Wires shall be identified at terminating points using printed heat-shrink sleeves.

k. 20 % spare terminals shall be provided in each section of terminal blocks for future use.

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l. All spare I/O contacts of protection and auxiliary relays shall be wired to terminal blocks and

numbered as per SUPPLIER documentation.

m. Unless the access to live terminals is prevented by interlocking (or otherwise), terminal and lugs at

voltage above 110 V shall be shrouded.

n. Terminal Arrangement and Segregation:

i. Terminal blocks shall be grouped into separate terminals for internal and external connections.

ii. Terminals carrying different voltages shall be segregated.

iii. Only one conductor shall be terminated in one side of a terminal.

o. Where necessary shorting terminals (or switch terminals) shall be used to facilitate operations and

testing.

p. Terminals associated with inductive CT circuits shall be provided with shorting links mounted in an

accessible position in LV compartment.

q. Disconnection links shall be used for earthing of control supplies and CTs.

r. VTs shall be provided with isolating type terminals.

s. The SUPPLIER shall include in his scope of supply test plugs and connection cables for relay testing

purposes.

A1.5.

Colour Coding and Marking

a. The colour and marking of actuators (push buttons) shall be in accordance with IEC 60204-1.

b. The following colour code shall be used:

i. Status signal light:

On/closed: RED.
Off/Open: GREEN.
Fault/Trip: YELLOW.
Voltage presence: WHITE.
Anti-con heater ‘on’: WHITE.

ii. Non-illuminated push button:

On/Close/Start: GREEN.
Off/Open/Stop: RED.
Emergency Stop RED.
Lamp test BLACK.
Reset BLUE (if any).

c. Conductors and terminals shall be in compliance with the IEC 60445.

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A1.6.

Earthing and Bonding

a. A separate earth bar shall be provided within the panel for termination of all earth wires.

b. The earth bar shall be insulated from the back-plate but connected by one earthing conductor to the back-plate. Unless otherwise specified, this bus bar shall have a minimum cross-sectional area in accordance with clause 8.2.2 of IEC 60204-1.

c. Earthing bus bars and conductors shall be hard-drawn, high-conductivity copper.

d. A means of earthing the incoming cable glands and the enclosure to this central earthing point shall

also be provided.

e. An earth stud shall be provided on all doors, with earthing straps across hinges.

f. Panels containing instrument circuits requiring instrument reference earth shall be equipped with a

separate instrument earth bar insulated from the enclosure protective earth.

g. A separate IS earth bar, insulated from both the PE and the instrument earth bar, shall be provided

for non-galvanic IS components located in the panel.

A1.7.

Labels and Identification

a. Equipment and components shall be tagged as per the ADNOC Tagging and Numbering Procedure,

document reference LATER.

b. Each equipment and component shall be labelled as per the general arrangement drawings.

c. Warning labels shall be provided with white characters on a red background for the following:

i. Terminals remaining live when a function is isolated.

ii. Terminals associated with an external source of supply.

d. Labels shall be laminated, engraved Traffolyte with black letters on a white background. The text

shall be in the language nominated on project documentation.

A1.8 Anti-Condensation Heater

a. Each assembly section of enclosures shall be equipped with anti-condensation heaters.

b. The capacity of heaters shall be sufficient to prevent the formation of possible condensation under

the service conditions.

c. Anti-condensation heaters shall:

i. Have IP 2X protection.

ii. Be fitted with a guard.

d. Anti-condensation heaters shall be controlled by hygrostats.

e. The heater shall be energised from an external power source at 240 / 220 V AC, single phase and

neutral.

f. Each heater circuit shall be provided with a manually controlled cut off switch mounted at the control

cubicle/compartment.

g. Each heater circuit shall be supplied from a residual current circuit breaker (RCCB) equipped with

the following:

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i. 30 mA earth leakage protection.

ii. Auxiliary contacts for ‘tripped’ and status indication.

iii. Padlocking facility.

‘Heater circuit live’ indication shall be provided by means of white colour LED or lamp.

i. Panel power supplies for anti-condensation heater circuits associated with external equipment shall

be switched on automatically when the equipment is not running.

AGES-SP-02-007

J-DMS 14-Aug-2024 UNCONTROLLED WHEN PRINTED

All parties consent to this document being signed electronically -PT&CS/GP/INT/2021/3344

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Project: Q-32859 - NMDC - Ruwais Folder: RFQ Files

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