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Part 1 – Seagoing Ships, Chapter 3 – Electrical Instal Rules for Classification and Construction I Ship Technology 1 Seagoing Ships 3 Electrical Installations Edition July 2015 The following Rules come into force on 1 January 2016. Alterations to the preceding Edition are marked by beams at the text margin. DNV GL SE (Germanischer Lloyd SE has on 29 January 2014 changed its name to DNV GL SE. Any references in this document to Germanischer Lloyd or GL shall therefore also be a reference to DNV GL SE.) Head Office Brooktorkai 18, 20457 Hamburg, Germany Phone: +49 40 36149-0 Fax: +49 40 36149-200 www.dnvgl.com "General Terms and Conditions" of the respective latest edition will be applicable (see Rules for Classification and Construction, I - Ship Technology, Part 0 - Classification and Surveys). Reproduction by printing or photostatic means is only permissible with the consent of DNV GL SE. Published by: DNV GL SE, Hamburg Rules I Ship Technology Part 1 Seagoing Ships Chapter 3 Electrical Installations Table of Contents Table of Contents Section 1 General Requirements and Guidance A General ....................................................................................................................... 1-1 B Definitions ................................................................................................................... 1-1 C Documents .................................................................................................................. 1-1 D Further Rules and Standards to be considered .......................................................... 1-1 E Ambient Conditions ..................................................................................................... 1-1 F Operating Conditions .................................................................................................. 1-1 G Power Supply Systems ............................................................................................... 1-1 H Voltages and Frequencies .......................................................................................... 1-1 I Visual and Acoustical Signalling Devices .................................................................... 1-1 J Materials and Insulation .............................................................................................. 1-1 K Protective Measures ................................................................................................... 1-1 Section 2 Installation of Electrical Equipment A Availability of Main Power Supply................................................................................ 2-1 B Generators .................................................................................................................. 2-1 C Storage Batteries ........................................................................................................ 2-1 D Power Transformers ................................................................................................... 2-1 E Electronics................................................................................................................... 2-1 F Low-Voltage Switchboards (up to 1000 V AC resp. 1500 V DC) .................................. 2-1 G Medium Voltage Equipment (> 1 kV – 17.5 kV AC) ..................................................... 2-1 Section 3 Power Supply Installations A Electrical Power Demand ............................................................................................ 3-1 B Main Electrical Power Supply ...................................................................................... 3-1 C Emergency Electrical Power Supply ........................................................................... 3-1 D Operation of the Emergency Generator in Port .......................................................... 3-1 Section 4 Installation Protection and Power Distribution A Three-Phase Main Generators ................................................................................... 4-1 B Emergency Three-Phase Generators ......................................................................... 4-1 C Direct Current Generators ........................................................................................... 4-1 D Power Transformers ................................................................................................... 4-1 E Storage Batteries ........................................................................................................ 4-1 F Power Electronics ....................................................................................................... 4-1 G Shore Connection ....................................................................................................... 4-1 H Consumer Protection Equipment ................................................................................ 4-1 I Power Distribution ....................................................................................................... 4-1 Section 5 Low-Voltage Switchgear Assemblies A General ....................................................................................................................... 5-1 Edition July 2015 Germanischer Lloyd Page 3 Rules I Ship Technology Part 1 Seagoing Ships Chapter 3 Electrical Installations Table of Contents B Calculations ................................................................................................................. 5-1 C Construction ................................................................................................................ 5-1 D Selection of Switchgear ............................................................................................... 5-1 E Choice of Electrical Protection Equipment .................................................................. 5-1 F Conductors and Busbar Carriers................................................................................. 5-1 G Measuring Instruments and Instrument Transformers ................................................ 5-1 H Testing of Switchboards and Switchgear .................................................................... 5-1 Section 6 Power Electronics A General ....................................................................................................................... 6-1 B Construction ................................................................................................................ 6-1 C Rating and Design ....................................................................................................... 6-1 D Cooling ........................................................................................................................ 6-1 E Control and Monitoring ................................................................................................ 6-1 F Protection Equipment .................................................................................................. 6-1 G Tests ........................................................................................................................... 6-1 Section 7 Power Equipment A Steering Gear .............................................................................................................. 7-1 B Lateral Thrust Propellers and Manoeuvring Aids ........................................................ 7-1 C Variable Pitch Propellers for Main Propulsion Systems .............................................. 7-1 D Auxiliary Machinery and Systems ............................................................................... 7-1 E Deck Machinery .......................................................................................................... 7-1 F Electrical Heating Equipment and Heaters ................................................................. 7-1 G Heel-Compensating Systems ...................................................................................... 7-1 H Cross-flooding Arrangements ..................................................................................... 7-1 Section 8 Medium-Voltage Installations A Scope .......................................................................................................................... 8-1 B General Provisions ...................................................................................................... 8-1 C Network Design and Protection Equipment ................................................................ 8-1 D Electrical Equipment ................................................................................................... 8-1 E Installation ................................................................................................................... 8-1 Section 9 Control, Monitoring and Ship's Safety Systems A General Requirements ................................................................................................ 9-1 B Machinery Control and Monitoring Installations .......................................................... 9-1 C Ship Control Systems .................................................................................................. 9-1 D Ship Safety Systems ................................................................................................... 9-1 Section 10 Computer Systems A General ..................................................................................................................... 10-1 B Requirement Classes ................................................................................................ 10-1 C System Configuration ...............................................................................................
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