ABB RELION 620 Series Technical Manual page 687

1MAC504801-IB E
620 series ANSI
Technical Manual
In Figure 344, the corresponding limits regarding the swell operation are provided with
the inherent magnitude limit order difference. The swell functionality principle is the
same as for dips, but the different limits for the signal magnitude and times and the
inherent operating zone change (here, Voltage swell set x > 1.0 xVn) are applied.
Voltage
xVref
1.40
Voltage swell set 1
Voltage swell set 2
Voltage swell set 3
1.00
0
VVa swell time 1
0
GUID-C1C6BEEF-439A-4DF7-8065-5F88C7517834-ANSI V1 EN
Figure 344: Voltage swell operational regions
For interruption, as shown in
duration limits for interruption classification. Now the event and counter type depends
only on variation duration time.
Voltage
xVref
1.00
Voltage Int set
Momentary
interruption
0
VVa Int time 1
0
GUID-0204C8EA-102C-4327-BE84-DCE27747AA30-ANSI V1 EN
Figure 345: Interruption operating regions
Power quality measurement functions
Instantaneous
Momentary
swell
swell
VVa swell time 2 VVa swell time 3
Figure 345, there is only one magnitude limit but four
Temporary
interruption
VVa Int time 2 VVa Int time 3
Section 8
Maximum duration
Temporary
swell
swell
Time (ms)
VVa Dur Max
Sustained Maximum duration
interruption interruption
Time (ms)
VVa Dur Max
681