Supply and distribution Flashcards
How many diesel generators are fitted to a generic distribution system?
What does EDC stand for?
Electrical Distribution Centre
How many EDCs are fitted to a Generic Distribution Centre?
What does MCCB stand for?
List the 5 main breakers fitted to a Generic Distribution system
Explain the uses of the five main breakers fitted to a Generic Distribution Cenrtre
list the components of the generic distribution system
what is the power book and when was it used?
what is the lighting book and when is it used?
what is the “reference book” and when is it used?
what is the ratio for 440V fuses regarding fuse discrimination
3:1
what is the ratio for 115V fuses regarding fuse discrimination?
2:1
explain Breaker discrimination
What does MCR stand for?
What does PCP and SCP stand for?
PCP- primary control
SCP- ships control centre
List the meters fitted to a switchboard generator section
where are the breaker operating switches found and what are they called?
describe the connection of shore supply
what are the rules regarding to earthing the ship when connecting shore supply
what would happen to a motor if phase rotation is wrong?
List 3 types of changeover switches
Automatic change over switch (ACOS)
Remote operated change over switch (ROCOS)
Hand change over switch (HCOS)
List 3 kinds of hand change over switches
normal/alternative
normal/emergency
normal/alternative/emergency
what are where are the 440V earth testing facilities found?
why are there separate 115V testing facilities?
