Installation Drawings
52
Figure 31 Maintenance Bypass interconnection
Table 17 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 bypass cabinet
D Maintenance UPS module AC input Ph A, B, C bypass cabinet
E UPS module AC output Maintenance Ph A, B, C bypass/transformer cabinet
G UPS module AC output Maintenance Neutral bypass/transformer cabinet
F 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 terminal block 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 17 for key to interconnection
Maintenance Bypass/Transformer Cabinet
front view without front door and panel
UPS Module
left-side view without side panel
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