Emerson Liebert NXL series Operation And Maintenance Manual page 74

Liebert NXL UPS
Event Message Event Definition
Batt Test Inhibit
The conditions required to perform an
automatic battery test are not met.
When the battery test is inhibited, the
system delays the test for 7 days. If
conditions are satisfied after 7 days, the
UPS performs the battery test at that
time.
Examples of conditions required to run
the automatic battery test are at least
20% load, all battery breakers closed,
normal operation, etc.
Batt Test Passed
The Battery Test passed.
Q2 Open
The Bypass isolator is open.
The Bypass isolator feeds the Static
Bypass Switch (BPSS).
The purpose of this isolator is to prevent
leakage current through the bypass
circuit during an outage.
This status message is self-clearing.
When the condition is no longer present,
the message and any control activity
tied to the status event reverts to
normal.
BPSS Ovld
The Bypass Static Switch (BPSS) was
Exceeded
turned off due to an extended overload.
While the BPSS can sustain an overload
greater than the Inverter and for a
longer period of time, there are still
limits on the amplitude and duration of
overload that the BPSS can handle. This
alarm indicates the overload was
greater in amplitude and time than the
BPSS can handle, and therefore shut off
to prevent damage to the equipment.
Liebert NXL alarm and status messages (continued)
Page 74
Operation and Maintenance Manual 250-300-400-800kVA
Recommended Action
Check the Active Event Window and
investigate other events to further
analyze.
If there are other active events in the
Active Event Window, press "RESET" to
clear the events.
Check the One-Line display to verify the
UPS is online.
Check the Module Output Meter and
verify the kW load is between 20%-100%.
Press the Battery Box on the One-Line
Display and verify all battery strings
show at least 90% charged and all battery
breakers are closed.
If the issue cannot be resolved, contact
your factory-authorized service provider.
None.
This status message is informational. If
the isolator was not opened intentionally,
or if the isolator is actually closed and
this message is active, contact your
factory-authorized service provider.
Press "SILENCE" to silence the audible
alarm.
If Q3 is available (visible if present on the
One-Line Display), close it to restore
power to the load.
DO NOT ATTEMPT TO CLOSE Q3
UNTIL THE SOURCE OF THE
OVERLOAD IS IDENTIFIED AND
ISOLATED.
Once the overload source is isolated,
restart the UPS by pressing "Startup,"
"Manual Start" and follow the prompts.
If the overload condition does not clear, or
the overload is cleared but the UPS does
not restart, contact your factory-
authorized service provider.