Electrical Distribution

Question 1

Electrical Distribution

Answer 1

•four diesel driven generators
• two located in the forward auxiliary machinery room.
-double rafted
-acoustically enclosed
•Two located in the upper auxiliary machinery room
-single raft mounted
-not enclosed
•The output is 1.3MW, 600V, 61.2Hz, 3 Phase.
•450V system would not have given large enough range of speeds when using the electrical propulsion system.

Question 2

Electrical distribution

Answer 2

•Power supplied is distributed through breakers to the switchboards and electrical distribution panels.

Question 3

Breakers in the distribution system

Answer 3

•Supply breaker
•Interconnected breaker
•shore supply/ship alongside breaker
•Electrical motor breaker. 
•Motor generator feeder breaker. 
•Motor generator supply breaker. 
diesel generator alternative supply breaker.

Question 4

BUS BAR

Answer 4

•The bus bar linking breaker is used to link two bud bars of the same voltage in a switchboard.
•only two bud bars are in each switchboard:
- 600V
- 450V