LOT 201.34 Non-Class 1E Vital 120 VAC Flashcards Preview

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Flashcards in LOT 201.34 Non-Class 1E Vital 120 VAC Deck (10):
1

LOT 201.34 Non-Class 1E Vital 120 VAC


Where is the 45 kVA 120V UPS Panels (DP003/DP004) located?

EAB 60' next to RDMGs

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2

LOT 201.34 Non-Class 1E Vital 120 VAC


What indications are available in the MCR for the Non-Class 1E Vital 120 VAC System?

CP003

DP048A Trouble (20 kVA)
DP005 Trouble (25 kVA)
DP006 Trouble (25 kVA)


No direct Control Room or ICS computer points for the 45 kVA system (DP003 and DP004). However, if DRPI (DP003) is lost we are susceptible to entering Tech Spec 3.0.3 condition.

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3

LOT 201.34 Non-Class 1E Vital 120 VAC


How long will it take for load to shift back to the inverter once power returns?

20 kVA (DP048A):
30 sec

25 kVA (DP005/DP006):
5 minutes

45 kVA (DP003/DP004):
30 sec


Can block if transfer to load pushbutton is pressed. ***


Note:
Name of button changes slightly for each type of UPS.

4

LOT 201.34 Non-Class 1E Vital 120 VAC


What powers the 45 kVA 120V UPS Panels (DP003/DP004)?

Normal (VRT):
MCC 1L1 (DP003)
MCC 1L2 (DP004)

B/U (VRT)
MCC 1G8


Note:
45 kVA 120V UPS Panels do NOT have rectifiers, inverters, or batteries. It's backup is the TSC DG.

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5

LOT 201.34 Non-Class 1E Vital 120 VAC


What is the difference between a rectifier and an inverter?

Rectifier:
Turns AC into DC

Inverter:
Turns DC into AC

6

LOT 201.34 Non-Class 1E Vital 120 VAC


What is the purpose of the Inverter Pre-Charge Pushbutton?

Places DC around inverter DC breaker prior to shutting breaker


Extends life of inverter capacitors.

7

LOT 201.34 Non-Class 1E Vital 120 VAC


What powers the 25 kVA 120V UPS panels (DP005/DP006)?

Normal (Inverter):
125VDC Bus 1B

Alternate (VRT):
MCC 1J1 (DP005)
MCC 1J2 (DP006)


Note:
Unlike 20 kVA 120V UPS panels, the 25 kVA 120V UPS panels do NOT contain a rectifier.

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8

LOT 201.34 Non-Class 1E Vital 120 VAC


Where are the 25 kVA 120V UPS panels (DP005/DP006) located?

EAB 10' in hallway

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9

LOT 201.34 Non-Class 1E Vital 120 VAC


Where are the 20 KVA 120 V UPS panels (DP048A) located?

Inverter / Rectifier / VRT:
TB 31' SE corner by BOP DG

DP048A:
TB 55' looking at it once you exit E stairwell

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10

LOT 201.34 Non-Class 1E Vital 120 VAC


What powers the 20 kVA 120V UPS panels (DP048A)?

Normal Power (Rectifier & Inverter):
MCC 1F4

B/U DC (Inverter):
125 VDC 1A

B/U AC (VRT):
MCC 1G1

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