Emerson Liebert CRV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 C R 0 2 0 R A 1 C 7 S D 1 8 1 1 E L 1 0 P A - Manual (Page 133)

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