inform ETR EVO Series, Installation And Operating Manual

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ETR EVO UPS User Manual (Ver. 1.0) Page 56
9.11. Ambient temperature high Alarm
It is shown “Ambient temperature high” on Alarm List. If the ambient temperature is high, it causes
a rise in
the internal temperature of UPS and this alarm appears. In this case; the first thing to do is
cool down the environment.
9.12. Overload Alarms
Connected loads to the output of the UPS that exceed the nominal power of the unit is called
“Rectifier overload” and/or “Inverter overload”. Check if there is an overload and remove the
excessive load. Hence the alarm would be off.
UPS can supply
the load that exceeds the nominal power of the unit for a limited period while
operating in Online Mode. This period depends on the load % and the initial temperature of the
overload on the semiconductors.
The Unit follows up the following procedure in the calculation of the overload time:

It supplies the load for a period which is specified in Appendix-3 Technical Specifications , and then
it transfers the load to bypass line if the bypass input voltage/frequency value is within the
allowed limits.

Meanwhile if the junction temperature passes over a certain value, than it transfers the load to
bypass line (assuming the bypass voltage/frequency is acceptable).
9.13. Manual bypass active Alarm
If Manual Mypass circuit breaker is brought to “I” position, this alarm appears. If Manual Bypass
circuit breaker is brought to “I” position without any reason (except the reasons explained in
Section
7.6 ), switch this circuit breaker to “0” position to remove the alarm.
9.14. Battery test failure Alarm
UPS tests the batteries periodically. In case the batteries failed in the battery test, this alarm appears.
Perform the test again when the batteries have been charged for min. 10 hours and verify the battery
circuit breaker is at "I" position.
If the alarm continues, contact to authorized Technical Service.
If the unit is working on bypass mode during the initial start of the overload or if it
has passed
to bypass mode because of the overload, then the only protection in the system is
the
automatic circuit breakers in the circuit. In case of the UPS circuit breaker is switched
off
then all the loads on the output would be deenergized.
Make sure that the UPS is not overloaded to provide a higher quality supply to the
loads.