A manual bypass switch is available to ensure continuity of supply to the critical load when the
UPS is out of order or in repair and this manual bypass switch bears for equivalent rated load.
4.2 Turn on/off UPS
4.2.1
Restart procedure
CAUTION!
MAKE SURE GROUNDING IS PROPERLY DONE!
◆
Set the Battery Breaker to the
“ON” position according to the user’s manual.
◆
Open the front and rear doors of the UPS to access to the main power switches. During
this procedure the output terminals will become alive.
CAUTION
！
Check to see if the load is safely connected with the output of the UPS. If the
load is not ready to receive power from the UPS, make sure that it is safely
isolated from the UPS output terminals
CAUTION!
Be sure that the maintenance cover is closed well before turn on the UPS!
◆
UPS Input Switch (below the UPS module at the front door)
If the Rectifier input is within voltage range, the rectifier will start up in 30 seconds then
the inverter will start up after then.
◆
UPS Output Switch (below the UPS module at the front door)
If the rectifier fails at startup, the bypass LED will light up. When the inverter starts up,
the UPS will transfer from bypass mode to inverter mode, and then the bypass LED
extinguishes and the inverter LED lights up.
No matter whether the UPS can work normally or not, all the status will be shown on the
LCD display.
4.2.2 Test procedure
CAUTION!
The UPS is operating normally.
It may take 60 seconds to boost up the system and perform self-test completely.
◆
Switch off the MAINS to simulate utility failure, the rectifier will turn off and the battery
