Start Up and Add a UPS to a Running Parallel System
Use this procedure to start up a UPS and add it to a running parallel system.
IMPORTANT: Before a UPS can be
added to a parallel system, the parallel system must be configured
by Schneider Electric.
- On the new UPS check that the UPS breakers (unit input breaker UIB, static switch input breaker SSIB, and unit output breaker UOB) are in the ON (closed) position.
- Reconnect the internal batteries of all UPSs and set all ModBC BBs (if present) to the ON (closed) position.
- Turn the external unit output breaker Ext. UOB of the UPS to the ON (closed) position.
- Turn the mains input breaker MIB and the bypass input breaker
BIB of the UPS to the ON (closed) position.
The display turns on and the Home screen is shown.
When the UPS has initialized, the battery relay closes automatically. Close external battery breaker if external batteries are part of the system.
The LEDs on the user interface show as follows:
- When the rectifier LED turns steady green, the UPS starts
the inverter.
The LEDs on the user interface show as follows:
- When the inverter LED turns steady green, the UPS automatically
transfers to normal mode and joins the running parallel system.
The LEDs on the user interface show as follows:
- Verify correct load sharing between the parallel UPS units.
