Appendix E: Wiring Diagrams - ABB AMVAC Installation And Operation Manual

Procedure for setting Under Voltage Trip option:
Note: Breaker must have dual secondary disconnect to use under voltage option.
The Under Voltage Trip input will perform an auto trip in the event the voltage source being monitored by this
input falls between 35% to 70% of nominal. It is enabled through DIP Switch I1004/2-3-4. The response of
this input also has a programmable time delay from 50 milliseconds to 5 seconds. The delay is set by the vari-
ous combinations of DIP Switch I1004/2-3-4 (see section 8.0). The Under Voltage Threshold is set by I1001.
See page 40 ED2.0 board for switch location and settings.
Inside the breaker there are stored energy capacitors that must be discharged prior to removing the
front cover of the breaker. Wait 10 minutes after breaker removal from the cell prior to removing the
front cover of the breaker for the discharging of the storage capacitors to occur.
1. With power off and breaker removed from cell.
2. Wait 10 minutes for power to drain out of capacitor inside of breaker.
3. Remove 4 screws holding front cover then remove front cover of breaker and locate dip switches I1001,
I1002 and I1004 using page 40 of AMVAC IB for reference.
4. Turn SW I1001
(example: 120V I1001-1 = ON, I1001-2 = OFF, I1001-1 = OFF).
5. Turn SW I1002 switch 3 to ON position ( this will prevent breaker from closing if there is no power to UV
circuit but breaker is powered).
6. Turn SW I1004 switch 3 to ON position (this will enable the UV and trip with in 0.5 sec of UV failure)
If an additional time delay is needed set SW I1004 to the needed settings according to Page 40 of the
AMVAC IB.
7. Replace front cover, connect power to breaker and test (insure you have supplied UV power to be moni-
tored to breaker inputs on Plug 2-3 (+UVD) and Plug 2-4 (-UVD) shown on page 42 of IB).
APPENDIX E
switches ON in need
1VAL050601-MB Rev C
DANGER
configuration for UV voltage to be monitored.
45