ABB LVS Digital FC610 - 3.3.5 Voltage Swell Supervision

POWER QUALIT Y PR ODUCT FU NCTION S
1TNC9 2825 0M0201 24
3.3.5 Voltage swell supervision
Voltage swell is the condition when the voltage in the electrical system temporarily increase
above a threshold.
The swell threshold and hysteresis voltage settings are a percentage of the system rated volt-
age Un.
In single-phase system, when U
swl
rise above the threshold, an alarm is triggered; when U
swl
returns to or below the swell threshold minus the hysteresis, the alarm is reset.
In three-phase system, when U
swl
of any phase rise above the threshold, an alarm is triggered;
The alarm is reset when U
swl
of three-phase is returned to or below the threshold minus the
hysteresis value.
Voltage swell supervision settings
Value range
0=Disable 1=Enable
Default value
0
Threshold
Value range
5-20 %
Default value
10 %
Step value
1 %
Hysteresis
Value range
0-10 %
Default value
2 %
Step value
1 %