socomec Green Power 100, Operating Manual

Page: 53 / 64

ENGLISH
IOMMASGPXX00-GB_01
53
Green Power
100-120 kVA
9
TROUBLESHOOTING
9.2 UPS UNIT ALARMS.
Overload in output supply. •
The load power draw is greater than the UPS’s nominal output.
Check the load on the display and disconnect loads not requiring UPS service or distribute the total load over the
three phases.
IMPORTANT!
Overloading results in the load not being powered by the UPS for a limited period of time. For further details, see
the technical specifi cations.
Switching inhibited. •
Switching from UPS unit bypass to inverter may be inhibited by an inverter failure. Reset the alarm and contact
Socomec UPS Aftersales Service.
UPS switching not possible. •
Switching from UPS unit inverter to bypass is prevented by problems on the auxiliary mains supply: mains supply
out of tolerance, not synchronised, etc. Ensure that Q4 is closed, that the auxiliary mains supply is available and
that the values are within range.
Insuffi cient UPS resources. •
The UPS unit is in overload, with auxiliary mains supply and inverter inhibited. The power supply to the load will be
interrupted if the load is not brought back within range or the auxiliary mains supply fails. Check the load on the
display and disconnect loads not requiring UPS service or distribute the total load over the three phases.
Inverter inhibited due to overload. •
This alarm is generated when the inverter has reached the maximum permitted overload time. Check the UPS’s
load and reset the alarms.
UPS unit inhibited due to overload. •
This alarm is generated when both the inverter and the bypass have reached the maximum permitted overload
time. Reduce the UPS’s load and reset the alarms.
Fan alarm. •
Ventilation system failure. Contact Aftersales Service.
Battery charger alarm. •
This alarm is generated in case of a battery charger fault. Check for other alarms and contact Aftersales Service if
necessary.
Battery powered operation. •
This alarm is generated when the UPS unit is operating on battery power. The input power supply has failed or
is insuffi cient (voltage/frequency out of tolerance). Check for the “rectifi er input supply fault” alarm. If there is no
power failure, check whether the upstream protections have tripped and whether Q1 is open.