Phase Imbalance Protection; Phase Imbalance Protection Level - ABB PST Installation And Maintenance Manual

132
AC 1006.9 - 5/03
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
Ph Imb Lev
Parameter Default
text value
Phase Imb No
Default
value
80%
Setting
Description
range
Phase
Yes, No imbalance
protection
Setting
Description
range
Trip level for
Phase
10... 80%
imbalance
protection
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