We have 2 UPS in parallel configuration on a location. Recently both the UPS just shutdown itself as well as the load, however just before the shutdown following alerts were received from UPS. we had 2 instances of UPS complete shutdown within 36 hours.
Device UPS: The external Switch Gear Q004 has opened.Device UPS: The output power is turned off.Device UPS: In bypass in response to an internal hardware fault.Device UPS: Return from bypass, internal hardware fault no longer present.Device UPS: In bypass in response to an internal hardware fault.
On First Instance found as below;
UPS was totally Shutdown & No Display.
The MCB supplying mains input power to UPS were tripped.
On Second Instance
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