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Fig.5-1 the cover of maintenance bypass breaker
Waring
Once the cover on the maintenance bypass breaker is removed, the system will transfer to bypass
mode automatically.
Waring
Before making this operation, confirm the messages on LCD display to be sure that bypass supply
is regular and the inverter is synchronous with it, so as not to risk a short interruption in powering
the load.
Danger
Even with the LCD turned off, the terminals of input and output may be still energized .
If you need to maintain the power module, wait for 10 minutes to let the DC bus capacitor fully
discharge before removing the cover.
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.
1. After finish of maintenance, close the bypass breaker and the bypass static switch
will be turned on in 30S after the LCD touch screen goes on, the bypass energy bar
is ok and the load is powered through maintenance bypass and static bypass.
Summary of Contents for EA990 G5 10
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