Assessment 1 Flashcards
What three items are required for a power and distribution system?
Prime mover, Generator and Switchboard.
What is the most common Prime Mover in the R.N?
Diesel Engine
What is used to connect two busbars in the same switchboard together?
Busbar Linking Breaker
What requirement must exist to connect two busbars together?
Same Voltage
What is the purpose of a changeover switch?
To Provide Normal & Alternative supply to Important Equipment
What is sent from the ship 24 hours before arriving in a port?
A Logistical Signal requesting shore supply
Name the key that makes shore supply safe while connecting to the boxes?
Castel Key
Where are the breaker remote operating switches?
PCP
All the main breakers can be operated from the Primary Control Position
In relation to breaker discrimination which safety device will operate first during fault conditions?
MCCB
What does SCC stand for?
Ships Control Center
In what order do breakers trip during fault conditions?
Feeder, Busbar Linker and Supply
What information does the Power book give?
Details of all 440v supplies
Why are their separate 115v earth testing facilities?
No physical connection due to transformers
