Powerware 5075 kVA - Manual (Page 82)

74 Powerware BPIII Harsh Environment UPS 50--75 kV Installation and Operation
164291261 Rev. F 111503
The RMP contains a local horn and the following backlit status indicators:
SYSTEM NORMAL
The UPS is energized (either with utility
power or battery backup) and is supplying
conditioned power to the critical load.
NO REDUNDANCY
This indicator applies only to parallel
systems when one cabinet is not
functioning. This feature is not available on
this system.
ON GENERATOR
This alarm means that the UPS input and
bypass are being supplied by the power
from the generator, instead of from the
utility power.
ON BYPASS
The bypass source is supplying the critical
load. Usually this means that the UPS is
not energized. The load is not protected in
Bypass mode, and a horn sounds after 30
seconds.
UPS ALARM
The UPS system is issuing an alarm.
Conditions that affect the current UPS
mode are indicated by the alarm lamps and
horn on the UPS.
ON BATTERY
The UPS battery backup is supplying the
critical load. The utility power is either
interrupted or out of specification. The
SYSTEM NORMAL indicator is also lit.
BYPASS UNAVAILABLE
The UPS system is in Normal mode, but
a bypass source is not within specification.
A horn sounds after 30 seconds.
SHUTDOWN IMMINENT
The UPS is preparing to shut down because the UPS is in Battery mode and the DC
voltage is approaching its low limit.
This light is accompanied by an audible alarm horn.