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P OWER QUA LIT Y
3.3.6
Voltage interruption is a special case of voltage dip. It provides a second level setting in addi-
tion to voltage dip supervision to assist the operator in network analysis.
The interruption threshold and hysteresis voltage settings are a percentage of the system
rated voltage Un.
In single-phase system, when U
equal to or above the dip threshold plus the hysteresis, the alarm is reset.
In three-phase system, when U
The alarm is reset when U
hysteresis value, the alarm is reset.
Voltage interruption supervision settings
Value range
Default value
Threshold
Value range
Default value
Step value
Hysteresis
Value range
Default value
Step value
1T N C928 25 0M0 201
Voltage interruption supervision
falls below the threshold, an alarm is triggered; when U
int
of any phase falls below the threshold, an alarm is triggered;
int
of three-phase are recovered to or above the threshold plus the
int
0=Disable 1=Enable
0
95-100 %
95 %
1 %
0-10 %
2 %
1 %
PR OD UCT FU NCTI ONS
is
int
2 5
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