C.1 Standard Electrical Connections; C.2 Electrical Connections For Optional Features; Figure 104 Electrical Field Connections - Emerson Liebert CRV User Manual

NOTICE
Risk of improper input power. Can cause equipment damage.
The electronically commutated motors included in the Liebert CRV unit are suitable for
connection to an electrical service providing input power to the unit with 300V or less line-to-
ground potential only.
Acceptable unit input electrical service for 460V (480V) nominal units:
• 480V wye with solidly grounded neutral and 277V line-to-ground
Unacceptable unit input electrical service for 460V (480V) nominal units
• Wye with high resistance (or impedance) ground
• Delta without ground or with floating ground
• Delta with corner ground
• Delta with grounded center tap

Figure 104 Electrical field connections

4
UNIT
DISCONNECT
SWITCH
7
5, 6
2
Typically, 2
1
2-1/2" (64mm) K.O.
1-3/32" (28mm) K.O.
3
4
OVERLOAD PROTECTORS
CONTACTORS
Unit
Base
Electrical Field Connections Descriptions
Refer to C.1 Standard Electrical Connections and
Unit Top
C.2 Electrical Connections for Optional Features for
keys to numbered components.
1-3/4" (44.5mm) K.O.
125
15
10
Not
Used
12
14
Not
Used
11
8
13
9
12
9
DPN001884
Page 3, Rev. 4
®
Liebert CRV
™