ABB HiPerGuard MV UPS User Manual page 75

7.1.6.1. List of Warnings
ID Event
W5.4 UPS in Test Mode while Run
W5.12 UPS Topology not selected
W5.24 DC bus voltage detected high
W5.25 DC bus voltage detected low
W5.30 String breaker opened
W5.32 Energy Storage bus voltage high timed The Energy Storage voltage has been detected as
Energy Storage bus voltage too low
W5.34
while running
W5.35 Auxiliary charger (Float charger) failed
or disabled
W5.46 DC system or group voltage mismatch
W5.48 DC bus system imbalance detected
Energy Storage bus system imbalance
W5.49
detected
W5.51 Energy Storage MCCB not closed
W5.87 UC120-A trip relay active
UC120-A power supply too low or
W5.88
failed
W5.89 UC120-A control link malfunction
W5.94 PEBB group reduced capacity
W5.95 PEBB group not ready
HI PE RG UA RD M V UP S U S E R M A N UA L
Description
The UPS has been placed in Test Mode while it is
running.
The topology of the UPS system has not been
selected.
The averaged DC bus voltage in the system has
risen to a high level.
The averaged DC bus voltage in the system has
fallen to a low level.
One or more Energy Storage battery string circuit
breakers has been detected as OPENED.
HIGH for a specified period.
While the system is RUNNING the Energy Storage
voltage has been sensed as TOO LOW.
A failure of the auxiliary charger (float charger) has
been detected. This is determined by detection of
low voltage on Energy Storage bus or by auxiliary
charger fault feedback.
There is a measurement discrepancy in the DC bus
voltage measurements made at various points in
the system.
The center point voltage of DC bus is compared
with ground. If this exceeds a preset limit, a
warning is raised.
The center point voltage of Energy Storage bus is
compared with ground and has EXCEEDED A
PRESET MAXIMUM LIMIT.
The feedback contact on an Energy Storage MCCB
indicates this MCCB is OPEN.
The Trip Relay in the UC120-A I/O module (located
on the switchgear) has activated.
The power supply voltage of the UC120-A I/O
module (located on the switchgear) has been
deemed as too low.
A malfunction has been detected in the UC120-A I/O
module (located on the switchgear) link.
The PCS-120 group has reported that one or more
PEBB modules not available.
More than the required number of PEBB modules
are stopped.
U S E R I NT E R FA CE
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