3.4 Power cables connection
This chapter introduces how to wire AC IN/OUT cables to UPS in different
modes, and UPS connecting with EBM/MBP.
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4.1
.1 .1
.1 Input /Output wiring
Input /Output wiringInput /Output wiring
Input /Output wiring
specification
specificationspecification
specification
Before wring UPS, upstream breaker and backfeed contactor should be
configured to avoid power backfeed to unity. And ‘backfeed voltage danger’
warning label should be added in backfeed contactor or device. Before
operating, UPS input should cut off, and check all terminals voltage to avoid
voltage dangerous. Backfeed contactor rating current should be larger than
UPS rating input current.
Below figures show the wiring system of UPS input.
Single phase input system
Three phase input system
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