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Input Breaker
Figure 6-3. UPS Breakers – 93PM-50-2
6.1.1
Control Panel
The control panel is used to set up and control the UPS, and to monitor UPS operation. For a description of the
UPS control panel functions, see paragraph 6.2.
6.1.2
Circuit Breakers
Input Circuit Breaker – The Input circuit breaker is used to control the AC input to the UPS rectifier.
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Battery Circuit Breaker – The Battery circuit breaker is present when internal batteries are installed and is
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used to control the DC input to the UPS from the internal batteries. This breaker disconnects only the
internal batteries, if both internal and external batteries are installed.
Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4
UPS Operating Instructions
www.eaton.com/powerquality
6-3
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