LCC20 119: Ships Service 60/400 Hz Electrical Distribution

Question 1

Turbine Driven Generators (SSTG)

Answer 1

produce 450 VAC, 60HZ 3 Phase power

Question 2

Ships service Switchboards

Answer 2

located in the engine room. labeled 1S and 2S. Used for SSTG, bus ties and circut breakers for EDGs and circut breakers to all load centers

Question 3

Load Center Switchboards

Answer 3

Localized power distribution..reduces the amount of cabling required throughout the ship.

Question 4

Circiut Breakers

Answer 4

Protects equipment form surges and overloads.

Question 5

Emergency Diesel Generators

Answer 5

Produce 450 VAC 60 Hz, 3 phase power.

Question 6

Emergency Switchboards

Answer 6

Provide power directly to vital loads when EDGs come online.

Question 7

Electric Plant Control Panel

Answer 7

contains measuring device. located in main control.

Question 8

Purpose of ships 400Hz

Answer 8

power output to ships Gyro compass and radars.

Question 9

Special Frequency Converters

Answer 9

2 Solid State converters

Question 10

Switchboards

Answer 10

controls the SFC

Question 11

Distribution Load Centers

Answer 11

Load Center 21 and 31 distribute 400 Hz