AEC IST5015 - Switching UPS to Normal Mode from Maintenance Bypass; Battery Maintenance; EPO

IST5 Tower UPS 10kVA~40kVA User Manual 37
Operations
5.2.5 Switching the UPS into Normal Mode from Maintenance Bypass Mode
These following procedures can transfer the load from the Maintenance Bypass mode
to inverter output.
 After finish of maintenance, close the bypass breaker and the bypass static switch
will be turned on in 30S after the LED screen goes on, the bypass indicator goes
green and the load is powered through maintenance bypass and static bypass.
 Turn off the maintenance bypass switch and fix the protection cover, and then the
load is powered through bypass. The rectifier starts followed by the inverter.
 After 60S, the system transfers to Normal mode.
Waring
The system will stay on bypass mode until the cover of maintenance bypass breaker is fix.
5.3 Battery Maintenance
If the battery is not discharged for a long time, it is necessary to test the condition of
the battery.
Enter the menu ，as is shown in Fig.5-3 and select the icon
MaintTest
，the system transfers into the Battery mode for discharging. The system will
discharge the batteries until the alarm of “Battery low voltage” is given Users can
stop the discharging by the “Stop Test” icon .
With the icon of
BattTest
, batteries will be discharged for about 30 seconds,
and then re-transfer to normal mode.
FUNCTION
END
BACK
Manual INV
ManualByp/Esc
Fault Clear
Stop Test
Batt. Test
Maint Test
Fig.5.3 Battery maintenance
5.4 EPO
The EPO button located in the operator control and display panel (with cover to avoid
disoperation, see Fig.5-5) is designed to switch off the UPS in emergency conditions
(e.g., fire, flood, etc.).To achieve this, just press the EPO button, and the system will