To connect the power supply cables:
1.
Open the rear door. The electrical box 1 is located under the top panel. Remove the cover plate from the
electrical box 1 by removing three M4 x 10 pan head screws for CRD25 and four M4 x 10 pan head screws for
CRD35.
2.
Route the power supply cables into the unit from the top or bottom panel and connect the cables to the L1, L2,
L3, N, and PE terminals of power supply 1 and power supply 2 on the main circuit breaker.
NOTE: Dual power supplies are provided to the unit, with power supply 1 as the primary power feed and power supply
2 as secondary. When power supply 1 fails, power supply 2 automatically takes over. When power supply 1 restores, it
automatically resume its function as the primary power feed.
Figure 6.1 Connecting Power Supply Cables for CRD25
Item
Description
Item
Description
1
Main circuit breaker
3
Connecting to power supply 2
2
Connecting to power supply 1
6 Electrical Connections
42
Vertiv™ Liebert® CRV CRD25 and CRD35 Row-Based Cooling System User Manual
