Lloyds Electrical Standards

ABCD

LLOYD’S REGISTER TYPE APPROVAL SYSTEM

Test Specification Number 3

2002 Performance Test Specification for Equipment to be used in Marine and Offshore Applications: ELECTRICAL CABLES CIRCUIT BREAKERS FUSES AND FUSE HOLDERS SUBMERSIBLE HULL PENETRATORS AND SUBSEA CABLE CONNECTORS ELECTRIC MOTORS

ABCD Lloyd’s Register 71 Fenchurch Street London EC3M 4BS Telephone +44 (0) 20 7709 9166 Fax +44 (0) 20 7488 4796 Email: [email protected] Web site: www.lr.org © LLOYD’S REGISTER 2003 ALL RIGHTS RESERVED. Except as permitted under current legislation no part of this work may be photocopied, stored in a retrieval system, published, performed in public, adapted, broadcast, transmitted, recorded or reproduced in any form or by any means, without prior permission of the copyright owner. Enquiries should be directed to the above address. TERMS AND CONDITIONS Refer to LLOYD’S REGISTER TYPE APPROVAL SYSTEM Procedure TA02 - 2002 (Sample of form 2502 Annex B - `Request for Marine Services`)

Lloyd’s Register Type Approval System Test Specification No. 3

Lloyd’s Register Page 1

FOREWORD This specification details performance, and where required environmental, testing for electrical products for Marine and Offshore applications. This test specification should be read in conjunction with the Lloyd’s Register Type Approval System – Procedure TA02 and, where appropriate, the Lloyd’s Register Type Approval System – Test Specification No. 1: 2002. Failure to comply with this requirement may render the test results unacceptable for the purposes of Lloyd’s Register Type Approval. CONTENTS Section Page 1 ELECTRICAL CABLES 3 1.1 INTRODUCTION 3 1.4 SUBMITTED INFORMATION 3 1.8 TESTING PROCEDURE 4 1.10 DESIGN AND TESTING STANDARDS 4 2 CIRCUIT BREAKERS 6 2.1 INTRODUCTION 6

2.3 SUBMITTED INFORMATION 6 2.7 TESTING PROCEDURE 6 2.8 DESIGN AND TESTING STANDARDS 6

3 FUSES AND FUSE HOLDERS 7 3.1 INTRODUCTION 7 3.3 SUBMITTED INFORMATION 7 3.7 TESTING PROCEDURE 7 3.8 DESIGN AND TESTING STANDARDS 7 4 PRESSURE HULL PENETRATORS AND SUBSEA CABLE CONNECTORS 9 4.1 INTRODUCTION 9 4.3 SUBMITTED INFORMATION 9 4.4 General arrangement drawings 9 4.5 Design specification 9 4.6 Proposed test specification 9 4.9 TESTING PROCEDURE 9 4.10 Penetrator type tests 9 4.18 Penetrator routine tests 11 4.25 Hydrostatic and gas pressure cycle tests 12 4.27 Subsea cable connector type tests 12 4.33 Subsea cable connector routine tests 13 4.37 Penetrator and subsea connector high voltage tests 14

Lloyd’s Register Type Approval System Test Specification No. 3


Section Page 5 ELECTRIC MOTORS 15 5.1 INTRODUCTION 15 5.4 SUBMITTED INFORMATION 15 5.6 TESTING PROCEDURES 15 5.9 DESIGN AND TESTING STANDARDS 15 LIST OF TABLES 1 Various Cable Standards 5 2 Type Tests to IEC 60947-2 6 3 Type Tests to IEC 60269-1 7 4 Type Tests to IEC 60282-1 Tests 8 5 Hydrostatic and Gas Pressure Cycle (Type Tests) 12 6 Hydrostatic and Gas Pressure (Routine Tests) 12 7 High Voltage Test 14 8 Electric Motors Specified Standards 16 FIGURES 1 Typical temperature cycle test 12

Lloyd’s Register Type Approval System Test Specification No. 3 Section 1


1. ELECTRICAL CABLES INTRODUCTION 1.1 The following requirements provide guidance for the approval of Electrical Cables in accordance with the Type Approval System and should be read in conjunction with the Lloyd’s Register Type Approval System – Procedure TA02 (2002). 1.2 Cables do not require environmental testing in accordance with Lloyd’s Register Test Specification Number 1: 2002 for environmental categories ENV1 to ENV5. Lloyd’s Register Type Approval will be based upon a design review, leading to defined performance tests agreed between Lloyd’s Register and the producer. It is preferred that cables are designed and manufactured in accordance with recognised international standards. 1.3 The requirements of Section 3 of the Procedure document should be observed. SUBMITTED INFORMATION 1.4 The Producer’s submission should fully describe each cable under consideration and be submitted in a single package in a clear and logical manner including the following details, as applicable.

i. Cable type. ii. Rated operating voltage. iii. Maximum rated conductor temperature. iv. Conductor material. v. Cross-section of conductor and number of cores. vi. Insulation material. vii. Thickness of insulation. viii. Material of inner sheath. ix. Thickness of inner sheath. x. Dimensions of metallic armouring wires or tapes. xi. Material of outer sheath. xii. Thickness of outer sheath. xiii. Dimension, materials and construction of core, conductor screens or braids. xiv. Type and construction of inner fillers. xv. Details of any special properties such as reduced smoke or acid emission. xvi. Details of applicable specifications and standards to which the cables are produced.

1.5 The Producers technical brochures and sectional drawings should be submitted. 1.6 The approval of cables, which incorporate special properties, or new materials for which no standards have been published will be the subject of special consideration. 1.7 Where National or International Standards are to be quoted on the Certificate, the cable’s technical specification should include all details required to show compliance with the various aspects selected from the standards chosen.



TESTING PROCEDURE 1.8 Agreed representative samples of the cables shall be subjected to a series of type tests, witnessed by the Lloyd’s Register Surveyor, unless carried out at a nationally accredited test establishment. The Lloyd’s Register Surveyor is required to visit the place of production to verify that the cables are manufactured and routinely tested to the declared standards. In the event of a range of cables being considered, the samples are chosen to provide a spread across the complete range. An example of this would be: i. Largest cross-sectional area / smallest number of cores. ii. Smallest cross-sectional area / largest number of cores. 1.9 The tests are to include the following: i. General visual examination to verify details of construction against the specification. ii. Dimensional checks to verify the following where applicable: a. Conductor cross sectional area. b. Insulation thickness. c. Sheath thickness. d. Metallic armouring. e. Overall dimensions. f. Core or conductor screens or braids. iii. Determination of conductor resistance. iv. High voltage endurance test. v. Determination of insulation resistance. vi. Tests to determine performance under fire conditions. vii. Tests to determine the mechanical characteristics of insulating materials. viii. Tests to determine the mechanical characteristics of sheathing materials. ix. Additional tests required to show compliance with the design standards (see paragraph 1.6). DESIGN AND TESTING STANDARDS 1.10 In accordance with the objective to harmonise test specifications with international standards, cable performance tests will be generally acceptable if compliance with appropriate IEC standards is demonstrated. 1.11 All cables to be Type Approved by Lloyd’s Register are to be of the FLAME RETARDANT type. The

minimum acceptable is flame retardance tests carried out on single cables in a vertical arrangement. Compliance with IEC 60332-1 “Tests on electric cables under fire conditions – Part 1: Tests on a single vertical insulated wire or cable” will be acceptable. 1.12 Table 1 gives a list of some design and testing standards.



TABLE 1 – Various Cable Standards REFERENCE DESCRIPTION IEC 60092-350 Electrical installations in ships. Part 350. Shipboard power cables. General

construction and test requirements. IEC 60092-351 Electrical installations in ships. Part 351. Insulating materials for shipboard and

mobile and fixed offshore units power, telecommunication and control data cables.

IEC 60092-353 Electrical installations in ships. Part 353. Single and multicore non-radial field power cables with extruded solid insulation for rated voltages 1kV and 3kV.

IEC 60092-354 Electrical installations in ships. Part 354. Single - and multi-core power cables with extruded solid insulation for rated voltage 6kV, 10kV and 15kV.

IEC 60092-359 Electrical installations in ships. Part 359. Sheathing materials for shipboard power and telecommunication cables.

IEC 60092-373 Electrical installations in ships. Part 373. Shipboard telecommunications cables and radio-frequency cables. Shipboard flexible coaxial cables.

IEC 60092-374 Electrical installations in ships. Part 374. Shipboard telecommunications cables and radio-frequency cables. Telephone cables for non-essential communication services.

IEC 60092-375 Electrical installations in ships. Part 375. Shipboard telecommunication cables and radio-frequency cables. General instrumentation, control and communication cables.

IEC 60092-376 Electrical installations in ships. Part 376. Shipboard multicore cables for control circuits.

IEC 60331-21 Tests for electric cables under fire conditions – Circuit integrity – Part 21: Procedures and requirements – Cables of rated voltages up to and including 0.6/1.0 kV.

IEC 60331-23 Tests for electric cables under fire conditions – Circuit integrity – Part 23: Procedures and requirements – Electric data cables.

IEC 60331-25 Tests for electric cables under fire conditions – Circuit integrity – Part 25: Procedures and requirements – Optical fibre cables.

IEC 60332-1 Tests on electric cables under fire conditions – Part 1: Tests on a single vertical insulated wire or cable.

IEC 60332-2 Tests on electric cables under fire conditions – Part 2: Tests on a single small vertical insulated copper wire or cable.

IEC 60332-3-21 Tests on electric cables under fire conditions – Part 3-21: Tests for vertical flame spread of vertically-mounted bunched wires or cables – Category AF/R.

IEC 60332-3-22 Tests on electric cables under fire conditions – Part 3-22: Tests for vertical flame spread of vertically-mounted bunched wires or cables – Category A.

IEC 60332-3-23 Tests on electric cables under fire conditions – Part 3-23: Tests for vertical flame spread of vertically-mounted bunched wires or cables – Category B.

IEC 60332-3-24 Tests on electric cables under fire conditions – Part 3-24: Tests for vertical flame spread of vertically-mounted bunched wires or cables – Category C.

IEC 60702-1 Mineral insulated cables and their terminations with a rated voltage not exceeding 750V. Part 1: Cables

IEC 60754-1

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

IEC 60754-2

Test on gases evolved during combustion of electric cables – Part 2: Determination of degree of acidity of gases evolved during the combustion of materials taken from electric cables by measuring pH and conductivity.

IEC 61034-2 Measurement of smoke density of cables burning under defined conditions – Part 2: Test procedure and requirements.



2. CIRCUIT BREAKERS INTRODUCTION 2.1 The following requirements provide guidance for the approval of circuit breakers in accordance with the Type Approval System and should be read in conjunction with the Lloyd’s Register Type Approval System – Procedure TA02 (2002) and Lloyd’s Register Test Specification Number 1: 2002. The latter is applicable where environmental testing is required. 2.2 Approval of circuit breakers intended for use in marine switchboards may be based upon agreed performance tests. Circuit breakers intended for other marine applications (where excessive temperature, humidity and vibration may be present) are to satisfy the requirements of Test Specification Number 1: 2002, category ENV2 as a minimum. SUBMITTED INFORMATION 2.3 Request forms and documentation in accordance with the Lloyd’s Register Type Approval System – Procedure TA02 section 3 should include the following information: i. Circuit breaker type designation. ii Rated operating voltage. iii. Whether ENV rating is required (state ENV category). iv. Making and breaking capacity. 2.4 The Producer’s technical brochures and sectional drawings should be submitted. 2.5 The approval of circuit breakers which, incorporate special properties or new materials for which no standards have been published will be the subject of special consideration. 2.6 Where National or International Standards are to be quoted on the Certificate, the circuit breaker’s technical specification should include all details required to show compliance with the various aspects selected from the standards chosen. TESTING PROCEDURES 2.7 The performance tests are to fully comply with the Type Test requirements of: i. IEC 60947-2 “Low-voltage switchgear and controlgear – part 2: circuit breakers: and ii. IEC 62271-100 “High-voltage switchgear and controlgear – Part 100: High-voltage”. Or an acceptable and relevant national standard, amended where necessary for the marine ambient temperature of 45°C and other environmental conditions. DESIGN AND TESTING STANDARDS 2.8 Type tests to IEC 60947-2 include the following shown in Table 2. TABLE 2 – Type Tests to IEC 60947-2 General performance characteristics. Rated service short circuit breaking capacity. Rated ultimate short circuit breaking capacity. Rated short time withstand current. Performance of integrally fused circuit breakers. Combined test sequence. Individual pole short circuit test sequence. 2.9 In accordance with the objective to harmonise test specifications with international standards, circuit breaker tests will be accepted if compliance with appropriate IEC standards is demonstrated. 2.10 Type tests to IEC 62271-100 should be selected in accordance with Table 7 of the standard. 2.11 Electronic equipment incorporated into circuit breakers is to satisfy, as a minimum, the requirements of IEC 60947-2, annex F; or the electromagnetic compatibility tests (EMC) of Lloyd’s Register Test Specification Number 1: 2002. However the tests cannot be mixed.



3. FUSES AND FUSE HOLDERS INTRODUCTION 3.1 The following requirements provide guidance for the approval of fuses and fuse-holders in accordance with the Type Approval Scheme and should be read in conjunction with the Lloyd’s Register Type Approval System – Procedure TA02 (2002) and Lloyd’s Register Test Specification Number 1: 2002. 3.2 Approval of fuses for use in marine switchboards may be based upon agreed performance tests. Fuse-holders are to satisfy the requirements of Lloyd’s Register Test Specification Number 1: 2002, category ENV2 as a minimum. SUBMITTED INFORMATION 3.3 Request forms and documentation in accordance with the Lloyd’s Register Type Approval System Procedure section 3 should include the following information:

i. Fuse type designation. ii. Carrier type designation (if applicable). iii. Rated voltage. iv. Rated current capacity. v. Breaking capacity.

3.4 The Producer’s technical brochures and sectional drawings should be submitted. 3.5 The approval of fuses, which incorporate special properties, or new materials for which no standards have been published will be the subject of special consideration. 3.6 Where National or International Standards are to be quoted on the Certificate, the fuse/fuse holder’s technical specification should include all details required to show compliance with the various aspects selected from the standards chosen. TESTING PROCEDURES 3.7 The performance tests are to fully comply with the type test requirements of IEC 60269-1 and IEC 60282-1 or an acceptable and relevant national standard, amended where necessary for the marine ambient temperature of 45°C and other environmental conditions. DESIGN AND TESTING STANDARDS 3.8 In accordance with the objective to harmonise test specifications with international standards, fuses and fuse holders will be generally acceptable if compliance with appropriate IEC standards is demonstrated. 3.9 Type tests to IEC 60269-1 include the following, as shown in Table 3. TABLE 3 -Type Tests to IEC 60269-1 Dimensions. Resistance. Temperature rise. Power dissipation. Conventional fusing current. Rated current. Time current characteristics. Overload. Conventional cable overload protection. Indicating device. Breaking capacity.



3.10 Type tests to IEC 60282-1 include the following, as shown in Table 4. TABLE 4 – Type Tests to IEC 60282-1 Dielectric tests. Temperature-rise tests. Breaking tests for time-current characteristics. Oil-tightness tests (only for fuses intended to be used in oil). Test of strikers.



4. PRESSURE HULL PENETRATORS AND SUBSEA CABLE CONNECTORS INTRODUCTION 4.1 The following requirements provide guidance for the approval of electrical pressure hull penetrators and subsea cable connectors in accordance with the Type Approval System and should be read in conjunction with the Lloyd’s Register Type Approval System – Procedure TA02 (2002). 4.2 Electrical pressure hull penetrators and subsea cable connectors do not require environmental testing in accordance with Test Specification Number 1: 2002 for environmental categories ENV1 to ENV5. Lloyd’s Register Type Approval will be based upon a design review, leading to defined performance tests agreed between Lloyd’s Register and the producer. SUBMITTED INFORMATION 4.3 Request forms and documentation in accordance with the Lloyd’s Register Type Approval System – Procedure TA02, section 3 should include the following information: 4.4 General arrangement drawings showing: i. Arrangement of inserts, connectors and general construction. Ii. Section view together with detailed drawing of all parts. iii. Associated parts list detailing all materials used. 4.5 Design specification, covering: i. Current and voltage ratings. ii. Operating depths and ambient temperature limitations. iii. Wet and dry side pressure ratings. iv. Intended purpose. 4.6 Proposed test specification detailing: i. Equipment to be used. ii. Procedures for type and routine tests. iii. Pass and fail acceptance criteria. 4.7 The Producer’s technical brochures should be submitted. 4.8 Where National or International Standards are to be quoted on the certificate, the equipment’s technical specification is to include all details required to show compliance with the various aspects selected from the standards chosen. TESTING PROCEDURE 4.9 Individual designs of each penetrator and cable connector are to be subjected to a series of type tests. Subsequent production is to undergo a series of routine tests. The Lloyd’s Register Surveyor is required to visit the place of production to verify that the equipment is manufactured and routinely tested to an acceptable standard. Penetrator type tests 4.10 Visual inspection The penetrator is to be examined for workmanship and conformity with the arrangement drawings, design data and identification markings.



4.11 Preliminary electrical tests i. For plug and socket penetrators the electrical continuity across the contacts of each circuit is to be measured and the results recorded.

ii. The insulation resistance of all circuit conductors, between conductors and each conductor to earth, should be measured at a minimum voltage of 500V d.c. The minimum value accepted is 5 Mega-ohms.

4.12 Non destructive testing i. The penetrator body and metalwork essential for the integrity of the penetrator are to be tested by non-destructive means for flaws and imperfections. ii. A radiographic examination is to be carried out to establish that the cable to moulding amalgamation and the condition of the metal/moulding interface are satisfactory and the moulding is free from deleterious voids and inclusions. iii. These tests are to be conducted and the results assessed to an agreed and accepted standard. 4.13 Gas pressure and voltage testing i. With the dry side of the cables exposed to the gas, the penetrator is to be subjected to a gas pressure test sequence at not less than twice the working pressure or a minimum of 6.9N/mm2, whichever is higher. The gas should be representative of that intended to be used in service. There shall be no leakage during the test. For details on acceptable test cycles see 4.25. ii. Before the release of the gas pressure on the final cycle, all conductors are to be subjected to a high voltage test. For details of the test required see paragraphs 4.37- 4.42 iii. Alternative proposals to the above may be submitted for consideration. 4.14 Hydrostatic pressure, temperature and voltage testing i. A hydrostatic pressure test sequence at not less than twice the intended operating pressure is to be applied to the “wet” side of the penetrator. No leakage is to be permitted during the test. For details on acceptable test cycles see 4.25. ii. On completion of the sequence, the penetrator is to be subjected to a temperature test sequence, see paragraph 4.26, and a repeat of the hydrostatic pressure test sequence is performed. iii. Before the release of the hydrostatic pressure on the final cycle, all conductors are to be subjected to a high voltage test. For details of the test required see paragraphs 4.37 – 4.42. iv. On completion of the above tests, the insulation resistance of all circuit conductors, between conductors and each conductor to earth, should be measured at a minimum voltage of 500V d.c. The minimum value accepted is 5 Mega-ohms. v. The umbilical cable is to be cut from the penetrator to simulate a ruptured cable, and a hydrostatic pressure test sequence at not less than twice the intended operating pressure is to be applied to the “wet” side of the penetrator to establish the extent of water penetration. There shall be no evidence of leakage past the blocking inserts. For details on acceptable test cycles see Table 5 (see also 4.25).

vi. Alternative proposals to the above may be submitted for consideration.

4.15 Temperature rise tests The temperature rise above ambient when conductors are carrying rated current is to be determined for all contacts and blocking inserts. The maximum temperature rise shall not exceed 30°C.



4.16 Tracking index tests The proof tracking index of the insulating material of blocking inserts is to be determined in accordance with IEC 60112. The value obtained is to be in excess of the maximum working voltage of the penetrator. 4.17 Final testing and examination upon completion of tests 4.10 to 4.16 i. Circuit continuity across contacts for plug and socket type penetrators is to be re-measured and compared with the initial values measured under paragraph 4.11. i. Differences between initial and final values are to be investigated and the penetrator design modified and retested as required. ii. The insulation resistance of all circuit conductors is to be re-measured and compared with initial values measured under paragraph 4.11. i. Differences between initial and final values are to be investigated and the penetrator design modified and retested as required. iii. The penetrator is to be visually examined to determine that no damage has occurred during testing and that it still conforms with the arrangement drawings and design data. It is to be confirmed that the identification markings remain legible. Penetrator routine tests 4.18 Visual inspection as per paragraph 4.10. 4.19 Preliminary electrical tests as per paragraph 4.11. 4.20 Non destructive testing as per paragraph 4.12. 4.21 Gas pressure and voltage testing generally as per paragraph 4.13, but with a reduced pressure cycle. See 4.25 4.22 Hydrostatic pressure and voltage tests

generally as per paragraph 4.14, but with a reduced pressure cycle. See 4.25.

4.23 Temperature rise and Tracking index tests These tests are not required for routine test purposes.

4.24 Final testing and examination upon completion of tests 4.18 to 4.22 generally as per paragraph 4.17. Values obtained for circuit continuity and insulation resistance are to be compared with the results obtained during type tests. Differences between routine and type test results are to cause the penetrator to be rejected.



FIGURE 1 Typical temperature cycle test Temperature change to occur at the rate of 1° C/minute

Hydrostatic and gas pressure cycle tests 4.25 Examples of acceptable test sequences for penetrators are as detailed in Tables 5 and 6. Variations to the sequences listed can be submitted for consideration. TABLE 5 – Hydrostatic and gas pressure cycle (type tests) Pressurise – hold for 24 hours – release to 10% of test pressure and hold for 15 minutes then reduce to zero. Pressurise – hold for 15 minutes – release to zero. Pressurise – hold for 3 minutes – release to zero. Pressurise – hold for 3 minutes – release to zero. Pressurise – hold for 3 minutes – release to zero. Pressurise – hold for 15 minutes – release to zero. TABLE 6 – Hydrostatic and gas pressure (routine tests) Pressurise - hold for 15 minutes - release to zero. Pressurise - hold for 3 minutes - release to zero. 4.26 Temperature cycle for type tests The penetrator temperature is to be reduced to -40°C for 4 hours followed by raising it to +60°C for 4 hours. The penetrator is to attain ambient temperature between cycles. The temperature cyclic test shall be repeated 3 times as shown in Fig. 1. Subsea cable connector type tests 4.27 Visual inspection The conductor is to be examined for workmanship, conformity with the arrangement drawings, design data and identification markings.



4.28 Preliminary electrical tests i. The electrical continuity across the contacts of each circuit is to be measured and the results recorded. ii. The insulation resistance of all circuit conductors, between conductors and each conductor to earth, should be measured at a minimum voltage of 500V d.c. The minimum value accepted is 5 Mega-ohms. 4.29 Hydrostatic pressure and voltage tests i. A hydrostatic pressure test is to be conducted on the connector at not less than twice the working pressure for a minimum of 30 minutes. During the test no leakage from the wetted area to electrical conductors is to be permitted. ii. Before the release of the hydrostatic pressure all conductors are to be subjected to a high voltage test. For details of the test required see paragraphs 4.37 – 4.42 4.30 Temperature rise of contacts The temperature rise above ambient when conductors are carrying rated current is to be determined for all contacts and inserts. The maximum temperature rise shall not exceed 30°C. 4.31 Tracking index tests The proof tracking index of the insulating materials of the connector inserts is to be determined in accordance with IEC Standard 60112. The value obtained should be in excess of the maximum working voltage of the connector. 4.32 Final testing and examination upon completion of tests 4.27 to 4.31 i. Circuit continuity across contacts is to be re-measured and compared with the initial values measured under paragraph 4.28.i. Differences between initial and final values are to be investigated and the connector design modified and retested as required. ii. The insulation resistance is to be re-measured and compared with the initial values measured under paragraph 4.28.ii. Differences between initial and final values are to be investigated and the connector design modified and retested as required. iii. The connector is to be visually examined to determine that no damage has occurred during testing and that it still conforms with the arrangement drawings and design data. It is to be confirmed that the identification markings remain legible. Subsea cable connector routine tests 4.33 Visual inspection as per paragraph 4.27. 4.34 Preliminary electrical tests as per paragraph 4.28. 4.35 Hydrostatic pressure and voltage tests as per paragraph 4.29. 4.36 Final testing and examination upon completion of tests 4.33 to 4.35 generally as per paragraph 4.32. Values obtained for circuit continuity and insulation resistance are to be compared with the results obtained during type tests. Differences between routine and type test results may cause the penetrator to be rejected.



Penetrator and subsea connector high voltage tests 4.37 As required in 4.29.ii, 4.13.ii and 4.14.iii the high voltage test is to be conducted in accordance with the procedures set out in paragraphs 4.38 to 4.42. 4.38 The appropriate voltage specified in Table 7 is to be applied between each conductor separately and the remaining conductors, together with any screen, connected to the penetrator body and earth. 4.39 The test is to be conducted with a sinusoidal waveform and at a frequency between 45 and 65Hz. 4.40 The power source is to have sufficient power to maintain the test voltage irrespective of any leakage currents. The value of the test voltage is to be selected in accordance with Table 7. TABLE 7 – High Voltage Test RATED INSULATION VOLTAGE TEST VOLTAGE Up to 60V 1600V Up to 300V 2000V Up to 660V 2500V Up to800V 3000V Up to 1000V 3500V Up to 1200V dc 3500V 4.41 The test voltage at the moment of application is not to exceed 50% of the test voltage. It is then to be steadily increased to its full value and maintained for one minute. 4.42 The test is considered acceptable if no breakdown or puncture of the insulation has occurred during the application of the test voltage.



5 ELECTRIC MOTORS INTRODUCTION 5.1 The following requirements provide guidance for the approval of electric motors and should be read in conjunction with the Lloyd’s Register Type Approval System – Procedure TA02 (2002). 5.2 For the purposes of Type Approval, an electric motor is regarded as a composite product. A single certificate is issued for the product range, which will not grant or imply approval of the components in any other application. 5.3 It is the Producers responsibility to ensure that the necessary safety procedures and requirements are adopted for the tests. SUBMITTED INFORMATION 5.4 Request forms and documentation should include the following additional information: i. Insulation class. ii. Type category of motor (see 5.9). iii. The intended field of application. iv. Catalogue sheets and technical brochures. v. General arrangement drawing. vi Parts list. vii. Former test reports for the product range. vii. A proposed test programme. 5.5 The producer is to submit details of novel type categories or any additional item such as built in brakes, thermistors, anti-condensation heaters, or built in motor protection units. TESTING PROCEDURES 5.6 The performance tests are to fully comply with the stated specified standard, amended where necessary for the marine ambient temperature of 45°C to cater for marine and offshore applications. 5.7 Additional heating may be caused by inverters or converters. 5.8 Where speed controls for low speed operation are fitted, suitable performance tests are required. DESIGN AND TESTING STANDARDS 5.9 Electric motors are commonly built to the following type categories: A.C. Polyphase i. Induction type: a. cage motor. b. double cage motor. c. slip ring motor. ii. Synchronous type: a. synchronous motor. b. reluctance motor. c. permanent magnet synchronous motor.



A.C. Single Phase and FHP Motors i. Induction type: a. capacitor start. b. split phase. c. shaded pole.

ii. Commutator type: universal motor. iii. Synchronous type: a. reluctance motor. b. permanent magnet motor. Direct Current (DC) i. series motor. ii. permanent magnet type with conventional cylinder motor. iii. shunt motor. iv compound motor. v. printed circuit motor. vi stepper motor. Motors with Wide Speed Control i. A.C. types: a. induction (inverter fed). b. switched reluctance. C. synchronous (inverter fed).

ii. D.C. types: a. separately excited. b. series.

5.10 Some commonly used national and international standards are listed in Table 8. TABLE 8 – Electric Motors Specified Standards IEC 60034 & EN 60034

Rotating electrical machines (multiple Parts)

IEC 60034-5 Rotating electrical machines – Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP code) - Classification

IEC 60072 Dimensions and output series for rotating electrical machines (Parts 1 & 2) IEC 60092-301 Electrical installations in ships. Part 301: Equipment – Generators and motors BS 4999 General requirements for rotating electrical machines (multiple Parts) BS 5000 Rotating electrical machines of particular types or for particular application 5.11 Where no national or international standard exists, the producer’s technical specification may be considered and should be submitted.

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