DNVGL-CP-0401 Edition February 2016

Transcription

1 CLASS PROGRAMME Type approval DNVGL-CP-0401 Edition February 2016 The electronic pdf version of this document, available free of charge from is the officially binding version.

2 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. February 2016 Any comments may be sent by to This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this document. The use of this document by others than DNV GL is at the user's sole risk. DNV GL does not accept any liability or responsibility for loss or damages resulting from any use of this document.

3 CHANGES CURRENT This is a new document. Changes - current Class programme DNVGL-CP Edition February 2016 Page 3

4 CONTENTS Changes current... 3 Contents Section 1 General Introduction Documentation...5 Section 2 Product Requirements Design requirements Test requirements...7 Section 3 Testing requirements Table of tests...9 Changes historic...11 Class programme DNVGL-CP Edition February 2016 Page 4

5 SECTION 1 GENERAL 1 Introduction 1.1 Objective The objective of this class programme (CP) is to describe the type approval (TA) scheme for electric high voltage cables. 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 DNV GL TA certificate based on requirements given in: DNV GL rules for classification - Ships RU SHIP Pt.4 Ch.8 Electrical installations DNV GL offshore standard OS D201 Electrical installations. Section 1 Guidance note: This class programme is not applicable for obtaining EU marine equipment directive (MED) certificates. Visit for information on MED certification. ---e-n-d---o-f---g-u-i-d-a-n-c-e---n-o-t-e Scope This CP gives a description of the procedures and requirements related to documentation, design and type testing applicable for TA of electric high voltage cables. This CP does not set the design requirements to the electric high voltage cables. 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 DNV GL Rules RU SHIP Pt.4 Ch.8 require that electric high voltage cables are type approved by the Society, and TA in accordance with this CP is thus mandatory for equipment to be installed on DNV GL classed vessels. 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 electric high voltage cables the following documentation shall be submitted: 1) Data sheet(s) 2) Main drawings of all different cable construction covered by the type approval, showing conductors and the different layers. 3) References to design standards, rules, specifications etc. 4) Specification of applied materials. 5) Test results (from tests already carried out, if any). Class programme DNVGL-CP Edition February 2016 Page 5

6 6) Applicant's proposal to type test and routine test. 7) Documentation of reliability and endurance on board ships and mobile offshore units, if any. 8) 1) Special operational limitations. 9) 1) List of the cables covered by the type approval giving the following information's for each variant: 10) 1) number of cores conductor cross section (mm²) and number of strands insulation thickness (mm) fillers/bedding/inner covering thickness (mm) inner/outer sheath thickness (mm) diameter of braiding wires (mm) overall diameter max.-min. (mm) Construction details: voltage class: 3.6/6 kv, 6/10 kv, 8.7/15 kv, 12/20 kv, 18/30 kv conductors: Class 2 or class 5. Stranded copper conductor screening insulation material: EPR, HEPR or LPE inner/outer sheath material: ST2, SHF1, SE, SH, SHF2 or SHF2 Mud metal covering: Braid or armour made of galvanised. steel, bronze or copper material outer braid/armour if any. Special properties, if any (watertight, fire resistant etc.): 11) Flame retardant IEC Fire resistance EC /2 or IEC Low Halogen free IEC Halogen free IEC Fluorine content IEC cl.45 Low smoke IEC /2 Offshore cables Mud resistance NEK 606 Cold bend (-40 C) and impact (-35 C) CSA C22.2 No. 03 Cold bend (-40 C) App.E. 1.2 and Cold impact (-35 C) App.E. 2 and UV resistant ISO or UL 1581 Toxicity index IEC cl ) Test programme, which as a minimum includes the elements for type testing, Sec.3. The test programme shall refer to the relevant IEC standards for each test. 13) Application for type approval form 90.01a. Note: 1) These informations shall be stated in the Application form no a Section 1 Class programme DNVGL-CP Edition February 2016 Page 6

7 SECTION 2 PRODUCT REQUIREMENTS 1 Design requirements 1.1 General requirements The electric high voltage cables shall comply with the relevant requirements of the following publications in its latest edition including amendments: DNV GL rules for classification Ships RU SHIP Pt.4 Ch.8 Sec.9 DNV GL rules for classification - HSLC+Ship RU HSLC + SHIP Pt.4 Ch.8 DNVGL Offshore standards OS D101 : General construction and test methods of power, control and instrumentation cables for shipboard and offshore applications IEC : Insulating and sheathing materials for shipboard and offshore units, power, control, instrumentation and telecommunication cables IEC : Single- and three-core power cables with extruded solid insulation for rated voltages 6 kv (Um = 7,2 kv) up to 30 kv (Um = 36 kv). Section Special properties IEC : Apparatus Fire alone at a flame temperature of at least 750 C IEC : Procedures and requirements Cables of rated voltage up to and including 0,6/1 kv IEC : Test method for fire with shock at a temperature of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kv and with an overall diameter exceeding 20 mm IEC : Test for vertical flame propagation for a single insulated wire or cable - Apparatus. IEC : Test for vertical flame propagation for a single insulated wire or cable Procedure for 1 kw premixed flame. IEC : Test for vertical flame propagation for a single insulated wire or cable Procedure for determination of flaming droplets/particles. IEC : Test on vertical flame spread of vertically-mounted bunched wires or cables - Apparatus. IEC : Test on vertical flame spread of vertically-mounted bunched wires or cables Category A. IEC : Determination of the amount of halogen acid gas. IEC : Determination of degree of acidity of gases evolved during the combustion of materials taken from electric cables by measuring ph and conductivity. IEC : Measurement of smoke density of cables burning under defined conditions Part 1: Test apparatus. IEC : Measurement of smoke density of cables burning under defined conditions Part 2: Test procedure and requirements. 2 Test requirements The testing is divided into: visual inspection electrical/mechanical tests. 2.1 Visual inspection By visual inspection, it shall be verified that the test sample is in conformity with the approved plans. Class programme DNVGL-CP Edition February 2016 Page 7

8 2.2 Electrical/mechanical tests The tests shall be according to the relevant parts of Sec.3 Table 1. Section 2 Class programme DNVGL-CP Edition February 2016 Page 8

9 SECTION 3 TESTING REQUIREMENTS 1 Table of tests Table 1 Table of tests Section 3 No. Tests Specification of tests TT RT Mandatory 1. Visual inspection 2. Conductor examination 3. Insulation thickness 4. Sheath thickness 5. Dimensions of metal covering 6. Overall diameters 7. Resistance of conductors 8. High voltage test /354, 9. Partial discharge test IEC /350, IEC Bending test IEC / Tan d measurement as function of voltage IEC / Tan d measurement as function of temperature IEC / Heating cycle test plus partial discharge test IEC / Impulse withstand test, followed by a power-frequency test IEC / Test for the behaviour at low temperature of ST2, SHF 1 and SHF 2 sheaths 16. Flame retardant test IEC , IEC , IEC Water tightness test for "watertight" cables 18. Electrical characteristics of insulating compounds IEC , Table Hot set test for insulations and sheaths 20. Mechanical properties of insulating before and after ageing / Mechanical properties of sheaths before and after ageing /360 Class programme DNVGL-CP Edition February 2016 Page 9

10 No. Tests Specification of tests TT RT 22. Compatibility test Test for the behaviour at high temperature of ST2, SHF 1 sheaths (pressure test) Test for the behaviour at low temperature of ST2, SHF 1 and SHF 2 sheaths Section Test for resistance to cracking of ST2 and SHF 1 sheaths (heat shock test) 26. Determination of hardness for HEPR and HF HEPR insulations 27. Determination of elastic modulus for HEPR insulations 28. Ozone resistance test for insulation and for sheaths 29. Oil immersion test for elastomeric sheaths 31. Test of the metallic coating of copper wires 32. Galvanising test for steel wires Optional 33. Flame retardant test on bunched wires or cables IEC , IEC , 35. Tests for electric cables under fire conditions Circuit integrity. Test shall be performed with nominal voltage IEC , 35. Test on gases evolved during combustion of materials from cables 1) IEC , IEC IEC cl Measurement of smoke density of cables burning under defined conditions IEC , IEC Offshore cables NEK TS Cold bend (-40 C) App.E. 1.2 and Cold impact (-35 C) App.E. 2 and UV resistant ISO or UL Toxicity index IEC cl. 44 1) This test shall be carried out on the non-metallic components of cables claimed to be halogen free TT = Type Test RT = Routine Test Class programme DNVGL-CP Edition February 2016 Page 10

11 CHANGES HISTORIC There are currently no historical changes for this document. Changes historic Class programme DNVGL-CP Edition February 2016 Page 11

12 DNV GL Driven by our purpose of safeguarding life, property and the environment, DNV GL enables organizations to advance the safety and sustainability of their business. We provide classification and technical assurance along with software and independent expert advisory services to the maritime, oil and gas, and energy industries. We also provide certification services to customers across a wide range of industries. Operating in more than 100 countries, our professionals are dedicated to helping our customers make the world safer, smarter and greener. SAFER, SMARTER, GREENER