Vertiv Liebert CW, Инструкция по установке и эксплуатации, Страница: 56 / 76

REV : 0
REV DATE : 11/18
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CW305, 375, 415 DOWNFLOW MODELS
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ELECTRICAL FIELD CONNECTIONS
LIEBERT CW
STANDARD ELECTRICAL CONNECTIONS
1. High voltage entrance - Located in bottom and top of box (quantity 2). Raceway in front left corner of
enclosure for routing high voltage wires thru enclosure.
2. Low voltage entrance – Located in bottom and top of box (quantity 4). Raceway in front right corner of
enclosure for routing low voltage wires thru enclosure.
3. Three phase electrical service - Terminals are on top of disconnect switch. Three phase service not
provided by Liebert.
4. Earth ground - Terminal for field supplied earth grounding wire and component ground terminal strip.
Earth grounding required for Liebert units.
5. Unit factory installed disconnect switch and Main Fuses – Access to the high voltage electric panel
compartment can be obtained only with the switch in the “off” position. Fused disconnects are provided
with a defeater button that allows access to the electrical panel when power is on.
6. Remote unit shutdown - Replace existing jumper between terminals 37 & 38 with field supplied normally
closed switch having a minimum 75VA, 24VAC rating. Use field supplied Class 1 wiring.
7. Customer alarm inputs - Terminals for field supplied, normally open contacts, having a minimum 75VA,
24VAC rating, between terminals 24 & 50, 51, 55, 56. Use field supplied Class 1 wiring. Terminal
availability varies by unit options.
8. Common alarm - On any alarm, normally open dry contact is closed across terminals 75 & 76 for remote
indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.