Emerson 10-30kVA installation manual Maintenance Bypass interconnection

Installation Drawings

Figure 35 Maintenance Bypass interconnection

Refer to Table 17 for key to interconnection

Maintenance Bypass/Transformer Cabinet	UPS Module
front view without front door and panel	left-side view without side 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	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

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