Clasification Society Rules and Regulations - Rules and Regulations for the Classification of Offshore Units, January 2016 - Part 6 CONTROL AND ELECTRICAL ENGINEERING - Chapter 2 Electrical Engineering - Section 10 Converter equipment
Section 10 Converter equipment
10.1 Transformers
10.1.1 The requirements for transformers are given in IEC 61892-3:2012, Mobile and fixed offshore units – Electrical installations – Part 3: Equipment, Section 6 and Pt 6, Ch 2, 10.1 Transformers of the Rules for Ships, which are to be complied with. Additions or amendments to these requirements are given in the following paragraph(s) of this sub-Section.
10.1.2 Transformers are to comply with the requirements of IEC Publications 60076, Power transformers, or alternative relevant International or National Standards amended where necessary for ambient temperature, see Pt 6, Ch 2, 1.9 Ambient reference and operating conditions.
10.2 Semi-conductor converters
10.2.1 The requirements for semi-conductor converters are given in IEC 61892-3:2013, Mobile and fixed offshore units – Electrical installations – Part 3: Equipment, Section 8 and Pt 6, Ch 2, 10.2 Semiconductor converters of the Rules for Ships, which are to be complied with. Additions or amendments to these requirements are given in the following paragraph(s) of this sub-Section.
10.2.2 Semi-conductor converters are to comply with the requirements of IEC 60146: Semi-conductor Converters, or alternative relevant International or National Standards amended where necessary for ambient temperature, see Pt 6, Ch 2, 1.9 Ambient reference and operating conditions.
10.3 Uninterruptible power systems (UPS)
10.3.1 The requirements for uninterruptible power systems are given in IEC 61892-3:2012, Mobile and fixed offshore units – Electrical installations – Part 3: Equipment, Sections 8 and 9, and Pt 6, Ch 2, 10.3 Uninterruptible power systems of the Rules for Ships, which are to be complied with. Additions or amendments to these requirements are given in the following paragraph(s) of this sub-Section.
10.3.2 UPS units are to comply with the requirements of IEC 62040, Uninterruptible power systems (UPS) – Part 1: General and safety requirements for UPS, or alternative relevant International or National Standard amended where necessary for ambient temperature, see Pt 6, Ch 2, 1.9 Ambient reference and operating conditions.
10.3.3 A.C. Uninterruptable Power Systems (UPSs) shall have isolated neutrals or TN-S, see Pt 6, Ch 2, 5.1 Systems of supply and distribution.
10.3.4 An external bypass, that is hardwired and manually operated, is to be provided to the UPS system, to allow for isolation of the UPS for safety during maintenance and maintain continuity of load power. When the UPS is operating in either normal or by-pass mode it must be ensured that there are no multiple system earths.
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