Figure 35 Maintenance Bypass Interconnection; Table 17 Liebert-Supplied Interconnect Wiring For Maintenance Bypass Cabinet - Emerson Liebert NX 10-30kVA Installation Manual

Figure 35 Maintenance Bypass interconnection

Refer to Table 17 for key to interconnection
Maintenance Bypass/Transformer Cabinet
front view without front door and panel
NOTES
1. All Liebert-supplied cable must be repositioned prior to and while the cabinets are being placed in their
final installed location.
2. All interconnection hardware supplied by Liebert.
3. AC connections must be made to the UPS module before attaching maintenance bypass/transformer
cabinet to UPS module.
4. Utility AC source neutral not required for maintenance bypass/transformer cabinet types D, E, M, N.
5. All cabling will be field-supplied when maintenance bypass/transformer cabinet is configured as stand-
alone cabinet.
6. Maintenance bypass/transformer cabinets must attach to the left side only.
7. Refer to the individual drawing of each piece of equipment for additional details.
Table 17 Liebert-supplied interconnect wiring for Maintenance Bypass Cabinet
Run From
A Utility AC source
B Utility AC source
C Maintenance
D Maintenance
E UPS module AC output
F UPS module AC output
G Maintenance
H Maintenance
I Utility AC source
J Monitoring terminal block
To
Maintenance
Maintenance
UPS module AC input
UPS module AC input
Maintenance
Maintenance
Load AC connection
Load AC connection
All ground connections
UPS Parallel Logic Board (M3)
48
UPS Module
left-side view without side panel
Conductors
Ph A, B, C bypass/ transformer cabinet
Neutral bypass/ transformer cabinet
Neutral - UPS Input
Ph A, B, C - UPS Input
Ph A, B, C - UPS Output
Neutral - UPS Output
Neutral bypass cabinet
Ph A, B, C bypass cabinet
Ground
Bypass contacts
Installation Drawings