inform PDSP 33010, Installation And Operating Manual

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Overload Behaviour
While operating in normal or battery mode, the UPS can feed overloads for a limited duration
which is given in the “technical specifications” section. After that duration, UPS automatically
switches into bypass mode, if the bypass is enabled and frequency/waveform/rms value of the
bypass mains voltage is acceptable.If the overload situation continues in the bypass operation,
thermal/magnetic protection devices may activate and protect the circuit. In this case, all loads on
the output will be deenergized.
Make sure that the UPS is not overloaded to provide a higher quality supply to the loads.
5.3. Battery Operation
Energy is drawn from the batteries. Loads are fed via the inverter.
Output voltage is sinusoidal and has a regulated amplitude and frequency. It is independent from
the battery voltage.
Battery voltage shall be in acceptable limits and the inverter shall be enabled for the UPS to operate
in this mode.
When the upper provisions are met, the UPS works in battery mode in the following conditions:

If rectifier is disabled.

If the rectifier is disabled or frequency/waveform/rms value of mains voltage is not in acceptable
limits.
Battery Test
This feature enables the user to obtain information about the battery condition. If the batteries
have approached end of their lives, batteries fail.
Battery life depends on several parameters like the number of charge-discharge cycles, discharge
depth and ambient temperature. Battery life greatly decreases as the ambient temperature
increases. Therefore it is recommended to keep the ambient temperature about 20 °C.
To perform a battery test, enter “START B. TEST” in the COMMANDS menu and wait. The UPS will
switch into battery mode, when the test has started. After about ten seconds, UPS will return to the
operation mode before the test. If the batteries pass the test, no alarm will be shown.
If the batteries fail, you’ll receive BATT FAILED message under the ALR submenu. In this case, make
sure that the battery circuit breaker is “ON”/”I”, charge the batteries for minimum 10 hours and
repeat the test. If the alarm persists, consult technical service for replacement.
Make sure that the batteries are fully charged and battery circuit breaker is “ON”/”I” before
starting battery test. Otherwise, the batteries will fail even if they are in good condition.
BATT FAILED message will not disappear until another successful test is performed.