Emerson Liebert NX 10-30kVA - Manual (Page 58)

Installation Drawings
50
Figure 37 Maintenance Bypass interconnection
Table 12 Liebert-supplied interconnect wiring for Maintenance Bypass Cabinet
Run From To Conductors
A Utility AC source Maintenance Ph A, B, C bypass/ transformer cabinet
B Utility AC source Maintenance Neutral bypass/ transformer cabinet
C Maintenance UPS module AC input Neutral - UPS Input
D Maintenance UPS module AC input Ph A, B, C - UPS Input
E UPS module AC output Maintenance Ph A, B, C - UPS Output
F UPS module AC output Maintenance Neutral - UPS Output
G Maintenance Load AC connection Neutral bypass cabinet
H Maintenance Load AC connection Ph A, B, C bypass cabinet
I Utility AC source All ground connections Ground
J Monitoring terminal block UPS Parallel Logic Board (M3) Bypass contacts
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.
Refer to Table 12 for key to interconnection
Maintenance Bypass/Transformer Cabinet
front view without front door and panel
UPS Module
left-side view without side panel