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Q5. Sketch an on-board High Voltage power generation and distribution system highlighting its features. Discuss in detail the various regulatory safety requirements of marine high voltage ships/systems and installations.

Q2. With reference to testing High Voltage equipment:

(a) Explain why earthing down is considered essential.

(b) Briefly describe the procedures of earthing down

(c) describe how an insulation resistance test is carried out on High Voltage equipment, making reference to personnel safety;

(d) Describe, with the aid of a sketch, a method to detect earth leakage in EACH of the following systems:

(i) Earthed

(ii) Insulated

Q1. With respect to the High Voltage power systems installation, explain the different types of circuit breaker that are used, comparing them on merits and de-merits. Describe the theory of arc phenomenon and the mechanism fitted to mitigate the arc.

Q5. a) What is high voltage and what are the high voltage equipment? (6)

b) Briefly explain the safety requirements of high voltage system. (10)