132 Low Voltage Products & Systems
AC 1006.9 - 5/03 ABB Inc. • 888-385-1221 • www.abb-control.com
Chapter 10 - Functions
10:26 Phase imbalance protection
Path in menu:
Menu/SETTINGS/Functional Settings/
Protections/Phase Imb
If the current in one phase differs from another phase by more than
the set level, the protection is activated.
The protection starts monitoring 30 seconds after full voltage.
10:27 Phase imbalance protection level
Path in menu:
Menu/SETTINGS/Functional Settings/
Protections/Phase Imb/Ph Imb Lev
This parameter makes it possible to set the level of the phase
imbalance protection. It is active only if the Phase imbalance
protection is selected.
Parameter
text
Default
value
Setting
range
Description
Phase Imb No Yes, No
Phase
imbalance
protection
Parameter
text
Default
value
Setting
range
Description
Ph Imb Lev 80% 10… 80%
Trip level for
Phase
imbalance
protection
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