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DNV GL AS
CLASS PROGRAMME
Type approval
DNVGL-CP-0393
Edition December 2015
FOREWORD
DNV GL class programmes contain procedural and technical requirements including acceptance
criteria for obtaining and retaining certificates for objects and organisations related to
classification.
©
DNV GL AS December 2015
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Changes - current
Class programme — DNVGL-CP-0393. Edition December 2015 Page 3 Rotating electrical machines
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CHANGES - CURRENT
Contents
CONTENTS
Changes - current...3
Section 1 General... 5
1 Introduction...5
2 Documentation...5
Section 2 Product requirements... 7
1 Design requirements... 7
2 Test requirements... 7
Section 3 Type tests...8
Section 1
Class programme — DNVGL-CP-0393. Edition December 2015 Page 5 Rotating electrical machines
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SECTION 1 GENERAL
1 Introduction
1.1 Objective
The objective of this class programme (CP) is to describe the type approval (TA) scheme for rotating electrical machines.
For a description of the Society's type approval scheme in general and further information on general conditions and procedures for obtaining the Society's TA certificate, see the Society's document DNVGL CP
0338 Type approval scheme.
The procedures and requirements described in this CP are applicable for obtaining Society TA certificate based on requirements in:
— DNV GL Rules for Classification – Ships RU SHIP Pt.4 Ch.8 Electrical installationS
— the Society's document OS D201 Electrical installations
— the Society's document CG 0339 Environmental test specification for electrical, electronic and
programmable equipment and systems. Guidance note:
This class programme is not applicable for obtaining EU Marine Equipment Directive (MED) certificates. Visit www.dnvgl.com for information on MED certification.
---e-n-d---of---g-u-i-d-a-n-c-e---n-o-t-e---1.2 Scope
This CP gives a description of the procedures and requirements related to documentation, design and type testing applicable for TA of Rotating electrical machines.
This CP does not set the design requirements to the Rotating electrical machines. TA is based on compliance with design requirements given in the rules and/or other regulations and standards. The CP describes the applicable design requirements and how to document compliance with the requirements in order to obtain a TA certificate for the equipment. This includes, where relevant, technical requirements for how the type tests shall be performed.
1.3 Application
TA of equipment in accordance with this CP is not mandatory, but may be used as an alternative to case by case design approvals for machines < 300 kW to be installed on vessels classed with the Society.
A TA certificate in accordance with this CP will confirm compliance with the requirements in the rules as
specified in [1.1]. The TA certificate will not confirm compliance with requirements in other parts of the rules.
In case additional requirements in other parts of the rules shall be covered by the TA certificate, this shall be specified in the application for TA and will be stated in the TA certificate.
2 Documentation
For TA of Rotating electrical machines the following documentation shall be submitted: 1) main drawings for assembled machines relevant details.
2) references to design standards, rules, specifications etc. 3) test results (from tests already carried out, if any). 4) applicant's proposal to type test and routine test.
Section 1
6) special operational limitations:
The approval of rotor shafts is mandatory for propulsion motors. In order to include the rotor shaft into the type approval, the following documentation shall be submitted:
— NDT procedure including acceptance criteria (UT + MPI) for shaft and welds — details of the weld and welding procedure for the rotor.
7) field of application.
8) list of type designations for each variant. 9) construction details: — voltage — power — speed. — temp. class — insulation class — enclosure (IP) class
— explosion protection + certificate from recognised test laboratory — special properties, if any.
10) test programme, which as a minimum includes the elements for type testing, See Sec.3. The test
programme shall refer to the relevant IEC standards for each test. 11) application for type approval form 90.01a.
Section 2
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SECTION 2 PRODUCT REQUIREMENTS
The Rotating electrical machines shall comply with the relevant requirements of the following publications in its latest edition including amendments:
1 Design requirements
— DNV GL rules for classification - ShipsRU SHIP Pt.4 Ch.8
— DNV GL rules for classification - High speed and light craft
— the Society's offshore standard DNVGL OS D201 as governed by applicable standards
— IEC 60092-301: Part 301 Equipment-generators and motors
— the Society's document CG 0339 Environmental test specification for electrical, electronic and
programmable equipment and systems
— IEC 60034-series, Rotating electrical machines
2 Test requirements
The testing is divided into: — visual inspection
— electrical/mechanical tests — environmental tests.
2.1 Visual inspection
By visual inspection, it shall be verified that the test sample is in conformity with the approved plans.
2.2 Electrical/mechanical tests
The tests shall be according to the relevant parts of the tables given in Sec.3.
2.3 Environmental tests
Tests related to endurance and reliability of the product on board ships, should take account of the environmental strains on board vessels.
In case of insufficient experience from service on board ships (or equivalent), the following tests may be required as type tests:
— salt mist test according to the Society's document DNVGL CG 0339.
2.4 Voltage regulator
The voltage regulator used for the testing shall be included in the type approval certificate and tested
Section 3
SECTION 3 TYPE TESTS
1 Tables
Table 1 Type/routine tests
No. Tests Specification of tests Type test Routinetest 1. Visual inspection RU SHIP Pt.4 Ch.8 Sec.5 X X 2. Temperature-rise test at full load. RU SHIP Pt.4 Ch.8 Sec.5 X X 3. Overspeed test: 20% in excess of the
rated RPM for 2 min. RU SHIP Pt.4 Ch.8 Sec.5 X X 4. Dielectric strength test RU SHIP Pt.4 Ch.8 Sec.5Sec.10 and RU SHIP Pt.4 Ch.8 X X 5. Insulation resistance to be measured RU SHIP Pt.4 Ch.8 Sec.5 X X 6. Winding's resistance to be measured RU SHIP Pt.4 Ch.8 Sec.5 X X 7. Verification of bearings RU SHIP Pt.4 Ch.8 Sec.5 and IEC 60034-14 X X 8. Verification of degree of enclosureprotection (IP) RU SHIP Pt.4 Ch.8 Sec.5 and IEC 60034-5 X
Table 2 In addition for AC-generators
No. Tests Specification of tests Type test Routine test 9. Measuring of steady short circuitcurrent condition. (3 times rated full
load current, for duration of 2s)
RU SHIP Pt.4 Ch.8 Sec.5 X
10.
Overload test: 50% in excess of the rated current for not less than 30sec at PF=0,6
RU SHIP Pt.4 Ch.8 Sec.5 and IEC 600034-1/8.2
and 3 X
11.
Measuring of voltage regulation during steady and transient loading
and unloading RU SHIP Pt.4 Ch.8 Sec.5 X X
Table 3 In addition for DC-motors
No. Tests Specification of tests Type test Routinetest 12. Measuring of speed vs load withinspeed range RU SHIP Pt.4 Ch.8 Sec.5 X X 13. Overload test: 50% in excess of therated current for not less than 60s,
operating at highest full-field speed
RU SHIP Pt.4 Ch.8 Sec.5 and IEC 600034-1/8.2
Section 3
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Table 4 In addition for AC-motors
No. Tests Specification of tests Type test Routinetest 14. No load current at rated voltage andfrequency RU SHIP Pt.4 Ch.8 Sec.5 X X 15. Overload test: 50% in excess of therated current for not less than 2min. RU SHIP Pt.4 Ch.8 Sec.5and 3 and IEC 600034-1/8.2 X
16. Overtorque test = 60% overtorque 15sec. RU SHIP Pt.4 Ch.8 Sec.5 X X
Table 5 In addition for HV machines
No. Tests Specification of tests Type test Routinetest 17. Dry lighting impulse test orequivalent of the coil interturn
insulation. RU SHIP Pt.4 Ch.8 Sec.5 and IEC 60034-15 X 18. Dielectric strength test main and aux.circuits RU SHIP Pt.4 Ch.8 Sec.5Sec.10 and RU SHIP Pt.4 Ch.8
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