Electrical

Question 1

Are standby chargers normally energized?

Answer 1

yes

Question 2

Are standby charges normally in service supplying a load?

Answer 2

no

Question 3

What is the sequence for transferring an MCC from normal to alternate?

Answer 3

-Place both breakers in manual
-Close the alternate breaker
-Verify the normal breaker opens

Question 4

How does the 7KV Bus Mode Selector Switch work if removing ‘B’ train main power from service?

Answer 4

Place 7KV Bus Mode Selector Switch in Man B and Tie and close Tie Breaker and the ‘B’ breaker will open.

Question 5

PCB 20 and 21 are what train of main power?

Answer 5

2A

Question 6

PCB 14 and 15 are what train of main power?

Answer 6

1B

Question 7

PCB 17 and 18 are what train of main power?

Answer 7

1A

Question 8

PCB 23 and 24 are what train of main power?

Answer 8

2B

Question 9

When paralleling the D/G to the grid, the synchroscope must be rotating how? When do you close the D/G breaker?

Answer 9

-Slowly in the fast direction.
-1.5 minutes before vertical position.

Question 10

Failure of which Panelboard would remove automatic makeup capability to the 1B D/G FD day tank?

Answer 10

1ERPD

Question 11

If a loss of 1ERPD was due to inverter failure, where would it initially be powered from? What Tech Spec would be entered first?

Answer 11

-1VRD
-Tech Spec 3.8.9 condition B