Electrical Review

4. A red light on a breaker indicates the breaker is shut and the _ is energized
7. The only turbine trip signal that immediately transfers 4kV buses to offsite is the _ trip
9. _ lighting panels use an ABT to maintain a power supply to lighting
10. a fault occurs on the DF bus, the #2 & 4 inverters are supplied from the _
12. Overcurrent and _ trip of supply breaker will prevent the cross-tie breaker from auto closing
14. #1 UPS is removed from service, SLVRT supplying #1 Vital Bus, the #1 Vital bus is _
16. The AK-50 breakers are mainly used as _ and cross-tie breakers
17. the _ of UPS converts 480VAC to 125VDC
18. the _ of the UPS converts 125 VDC to 120 VAC to supply the Vital Bus
19. 30 seconds after a Turbine Trip, not caused by an Electrical Fault, 4KV busses are powered from the _
20. 4KV brkr with a _ open indicating light, may be closed locally with the local CS on the breaker door

1. 100% NSA, the voltage reading on DC bus #2 meter is being supplied from the _
2. Normal power supply to the #1 UPS is _ 480VAC
3. Transformers have _ gas pressure on the oil to prevent oxygen intrusion and corrosion
5. one inverter may be disconnected from its battery to perform an equalizing charge for < _ hrs.
6. 4kv auto bus transfer requires white neon light lit, k/s closed in breaker cubicle and _ _ (red targeted)
8. The control switch on the front door panel of a 4kV breaker always works with the breaker in the _ position
11. USST’s have a _ tap changer
13. Ensuring breakers are racked to Connect, Test, and Disconnect satisfies _ requirements
14. it is only possible to red target 4kv supply breaker without closing with the live bus transfer switch _
15. 100% Pwr Rx trip and OCB 83 fails open, FW-P-3B, Aux FW pump, is powered from the #2 _