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7.4.2
In a redundant multi-module system
WARNING!
THE WEIGHT OF A UPS MODULE CAN REACH 22KG, THEREFORE IT IS
RECOMMENDED TO BE LIFTED BY TWO PERSONS. THE MODULE SHALL
NEVER BE CARRIED BY ONE PERSON ONLY.
MAKE SURE THE INTERNAL DC-CAPACITORS (ELCO) HAVE BEEN
DISCHARGED WAITING AT LEAST 10 MINUTES.
7.4.2.1
How to extract a module in redundant multi-module system
If a UPS module is faulty in a redundant parallel system, the load will continue to be protected by the
operating modules’ on-line mode (inverter mode) and the faulty module may be replaced without
having to transfer the load to bypass.
To extract the faulty module from the UPS frame in a redundant multi-module configuration proceed
as follows:
1.
Identify the faulty module with the alarm condition and RESET the alarm. The audible noise will
stop. If the alarm conditions persists (the LED Indicator ALARM is red) there is a fault in the
UPS module.
2.
Verify that the load is supplied by the inverter of the other running modules by checking the
LCD indication LOAD PROTECTED. Verify load measurements on the operating modules.
3.
Turn the faulty module OFF by pressing simultaneously both “ON/OFF” buttons.
On the LCD, “LOAD OFF, SUPPLY FAILURE” should appear and the LED indicators will
indicate as shown below:
LED Indicator
Color
LINE 1
Green
LINE 2
OFF
BYPASS
OFF
INVERTER
OFF
BATTERY
Flashing Green
4.
Remove the two fixing screws and slide out the UPS module by about 10 cm.
This operation will disconnect the module’s power connection at the back of the cabinet.
5.
Pull the module out.
WARNING!
BEFORE DRAWING THE UPS-MODULE COMPLETELY OUT, WAIT 2
MINUTES UNTIL THE INTERNAL DC-CAPACITORS ARE DISCHARGED
NOTE
WE RECOMMEND TWO PERSONS FOR PULLING THE MODULE OUT OF
THE UPS FRAME. THE WEIGHT OF AN UPSCALE M10 IS 18.5 KG AND AN
M20 MODULE IS 21.5 KG).
6.
Screw the protective cover on the area left empty by the module with the two fixing screws
Summary of Contents for DPA UPScale ST120
Page 1: ... Copyright 2017 ABB All rights reserved User Manual DPA UPScaleTM ST S2 10 200 kW ...
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