PM SERIES
UDD-SD-125/
Release Date: 20.01.2015/Rev No: 0/Rev.
Date
:
29
4.2.5 Shut Down Procedure
CAUTION!
This procedure should be followed to completely shut down the UPS and the
LOAD. After all power switches, isolators and circuit breakers are opened,
there will be no output.
▪
Press the INVERTER OFF button on the right side of the operator control
panel for about two seconds;
▪
The Inverter LED will be extinguished and audible alarm comes
simultaneously.
▪
Switch OFF the BATTERY breaker;
▪
Open the UPS door to easily access to the main power switch;
▪
Switch OFF the input breaker.
▪
Switch OFF the OUTPUT switch.
The UPS shuts down;
WARNING!
Wait for about 5 minutes for the internal D.C. bus bar capacitors to be
completely discharged.
4.2.6 Startup Procedure for Parallel System
•
Connect parallel cable, input/output cable, and battery cable well; modify the parallel board
jumpers correctly.
•
Measure the positive and negative battery pack voltage. Battery breaker is opened temporarily.
•
Switch ON the output switch at the front door.
•
According to the startup procedure for single unit, set the operation mode of each UPS: single
mode is changed to parallel mode; set the parallel number for each UPS; up to 4 units can be
parallel; set the ID of each cabinet, the ID of each unit must be different.
•
Switch ON the input breaker. Close the external input switch and start from mains.
•
After start from mains, check the LCD interface of each UPS to see if the ID, VA is the same with
the actual values.
•
Switch ON the external battery breaker of each UPS. Check if the charging current displayed in
LCD is normal.
NOTE
The UPS cannot be parallel until each single unit is normal.
