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4.3 Procedure for Switching between Operation Modes
4.3.1 Switching the UPS from normal mode into battery mode
The UPS transfers to battery mode immediately after the utility (mains voltage) fails or drops
down below the predefined limit.
4.3.2 Switching the UPS from normal mode into bypass mode
Touching the icon
and then input the password “1203” to transfer the system to
Bypass Mode.
Warning
Ensure the bypass is working normally before transferring to bypass mode. Or it may cause
failure.
4.3.3 Switching the UPS into normal mode from bypass mode
Touch the icon
, UPS will return to Normal Mode from bypass mode.
Note
Normally, the system will transfer to the Normal mode automatically. This function is used when
the frequency of the bypass is over track and when the system needs to transfer to Normal mode by
manual.
4.3.4 Switching the UPS into maintenance bypass mode from normal mode
These following procedures can transfer the load from the UPS inverter output to the maintenance
bypass supply, which is used for maintaining the UPS.
1.
Transfer the UPS into Bypass mode as per the chapter 4.3.2.
2.
Turn on the maintenance bypass breaker (external or from POD). And the load is powered
through maintenance bypass and static bypass.
3.
One by one to turn off the external battery breaker, input breaker, bypass input breaker and
output breaker (external or from POD).
4.
The load is powered through maintenance bypass.