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| Liebert® EXL™ 625-1100kVA Installation Manual | Rev. 3 | 02/17 8
1.4.6 Special Considerations for Remote Breaker
The voltage sense cable for the rectifier input breaker must accommodate the pre-charge circuit for the UPS,
sized to 60A fuses at the sense location (see Figure 11). Breakers must be sized appropriately for the overload
curves as shown in the operation and maintenance manual, SL-26030, available at Liebert’s Web site,
www.liebert.com
1.5 SYSTEM COMPOSITION
A UPS system can include a number of equipment cabinets, depending on the system design: (e.g., UPS cabinet,
battery cabinet, maintenance bypass cabinet). In general, all the cabinets used in a particular installation are of
the same height. Refer to the drawings provided in 4.0 - Installation Drawings for the positioning of the
cabinets as shown in Figures 1 through 6.
1.6 CABLE ENTRY
Cables can enter the UPS cabinet from bottom or top into the Input/Output (I/O) of the unit; see the figures in
4.0 - Installation Drawings.
1.7 CABLE ROUTING
Per NEC 300.20 (NEC 2014 or equivalent), all phase conductors and ground conductors must be grouped
together when they are installed in ferrous enclosures or go through ferrous material. This is to avoid heating
from induction currents.
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