Transfer a Single UPS from Maintenance Bypass Mode to Normal Mode
- Check that all breakers except the maintenance bypass breaker MBB are in the OFF (open) position.
- Reconnect the internal batteries of all UPSs and set all the battery breakers BB in the modular battery cabinets (if present) to the ON (closed) position.
- Turn the static switch input breaker SSIB to the ON (closed)
position.
The display turns on and the Home screen is shown.
- Turn the unit output breaker UOB to the ON (closed) position.
The UPS starts up in static bypass mode.
- Turn the maintenance bypass breaker MBB to the OFF (open) position and reinstall the cover in front of the breaker.
- On the display select
and then select .NOTE: The system will not transfer to normal mode before the alarm has been cleared. - Turn the unit input breaker UIB to the ON (closed) position.
The rectifier ramps up. After UPS self-test, the battery relay closes automatically.
- When the rectifier LED turns steady green, the inverter synchronizes with bypass.
- Reinstall the cover on the maintenance bypass breaker MBB.
- After approximately 60 seconds, the UPS will automatically
transfer to normal mode.
The LEDs on the user interface show as follows:
