Section 6 Controlgear - Construction and testing
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 6 Control, Electrical and Fire - Chapter 2 Electrical Installations - Section 6 Controlgear - Construction and testing

Section 6 Controlgear - Construction and testing

Parent topic: Chapter 2 Electrical Installations

6.1 General

6.1.1 Controlgear is to comply with an acceptable National or International Standard.

6.1.2 Controlgear, including isolating and reversing switches, is to be so arranged that shunt field circuits are not disconnected without an adequate discharge path being provided.

6.2 Testing

6.2.1 Controlgear and resistors are to be tested by the makers with a high voltage applied between the earthed frame and all live parts. The test voltage is to be 1000 V plus twice the rated voltage with a minimum of 2000 V. The voltage is to be alternating at any frequency between 25 and 100 Hz and is to be maintained for one minute without failure.

6.2.2 Instruments and auxiliary apparatus may be disconnected during the high voltage test.

6.2.3 Immediately after the high voltage test, the insulation resistance between:

  1. current-carrying parts connected together and earth; and

  2. between current-carrying parts of opposite polarity or phase;

shall be not less than one MΩ when tested with a direct current voltage of at least 500 V.

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