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MX28B600-48V
9
4.5 AC Input Power
Each rectifier requires 208/220/240V AC, single-phase, 50/60 Hz, supplied through an external
20-amp two-pole breaker. There are three entry points (one for each rectifier shelf), for
customer-supplied one-inch conduit. Section 5.2 for details on electrical connection.
4.6 Battery connections
Battery connections are made by feeding the cables thru the bottom-rear of the unit. Use caution
when running the cables to not damage other components. (Figure 4.6-1). The -48V and return
buses each provide two sets of threaded 3/8”-16 holes on one-inch centers for connecting two-
hole battery cable lugs.
A manual battery disconnect breaker is included in the equipment housing at the top right circuit
breaker position in the front panel.
Battery temperature compensation is available. APC’s standard temperature monitor sensor and
cable is used to implement this optional function.
Figure 4.6-1. Battery Cable Connection Locations
Battery
Negative (-)
Battery
Positive (+)
Battery Cables