Gtec NS3000 Series, User Manual

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38 NS3000 UPS 60KVA~120KVA User Manual
Track the frequency of bypass voltage exceeds the limit. The alarm
will automatically reset if the bypass voltage becomes normal.
First check if relevant alarm exists, such as “bypass circuit
breaker open”, “Byp Sequence Err” and “Ip Neutral Lost”. If
there is any relevant alarm, first clear this alarm.
1. Then check and confirm if the bypass frequency displayed
on the LCD are within the setting range. Note that the rated
frequency are respectively specified by “Output Frequency”.
2. If the displayed voltage is abnormal, measure the actual
bypass frequency. If the measurement is abnormal, check the
external bypass power supply. If the alarm occurs frequently,
use the configuration software to increase the bypass high limit
set point according to the user’s suggestions
23
Exceed Tx Times
Lmt
The load is on bypass because the output overload transfer
and re-transfer is fixed to the set times during the current hour.
The system can recover automatically and will transfer back to
the inverter with 1 hour
24
Output Short
Circuit
Output shorted Circuit.
Fist check and confirm if loads have something wrong.
Then check and confirm if there is something wrong with
terminals, sockets or some other power distribution unit.
If the fault is solved, press “Fault Clear” to restart UPS.
25 Battery EOD
Inverter turned off due to low battery voltage. Check the mains
power failure status and recover the mains power in time
26 Battery Test
System transfer to battery mode for 20 seconds to check if
batteries are normal
27 Battery Test OK Battery Test OK
28
Battery
Maintenance System transfer to battery mode until to be 1.1*EOD voltage to
maintenance battery string
29
Battery
Maintenance OK Battery maintenance succeed
30 Module inserted Power Module is inserted in system.
31 Module Exit Power Module is pulled out from system.
32
Rectifier Fail The N# Power Module Rectifier Fail, The rectifier is fault and
results in rectifier shutdown and battery discharging.
33
Inverter Fail The N# Power Module Inverter Fail. The inverter output
voltage is abnormal and the load transfers to bypass.
34
Rectifier Over
Temp.
The N# Power Module Rectifier Over Temperature. The
temperature of the rectifier IGBTs is too high to keep rectifier
running. This alarm is triggered by the signal from the
temperature monitoring device mounted in the rectifier IGBTs.
The UPS recovers automatically after the over temperature
signal disappears.
If over temperature exists, check:
1. Whether the ambient temperature is too high.