5 Use and Operation
IST Series UPS (10kVA-200kVA)
User Manual
76
5.3.6 Switch to Inverter Output from Maintenance Bypass
Before perform the operation of switching to inverter power supply from maintenance bypass,
please ensure that the system bypass input is normal.
Step 1
Close the mains input breaker (POWER), bypass breaker (BYPASS), battery breaker of
battery cabinet, output breaker (OUTPUT) successively.
Step 2
After the power supply of UPS normal and the energy flow on touch screen shows bypass
output, place the manual maintenance breaker at the back of the cabinet to OFF, at this time,
the bypass supply power for load.
Step 3
Start inverter system.
After the rectifier finish starting, click the ON/OFF icon
on touch screen, it will enter
ON/OFF page. Select
ON
icon and press the
OK
icon for more than 3s, The load is switched
to mains inverter mode.
The inverter also can be started by ON button on the panel, but generally, it is not suggested to operate
like this.
----End
5.3.7 Emergency Power Off (EPO)
Do not perform the EPO operation unless emergency.
Press the EPO button on the panel or external EPO button of system, the UPS will turn to
emergency stop status. At this time, the touch screen shows EPO protection, system red
AC/DC and DC/AC indicators on and the buzzer long beeps.
