Voltage swell set 3
Voltage swell set 2
Voltage swell set 1
Voltage
xVref
Time (ms)
0
0
VVa Dur MaxVVa swell time 3VVa swell time 1 VVa swell time 2
1.40
Instantaneous
swell
Temporary
swell
Momentary
swell
Maximum duration
swell
1.00
GUID-C1C6BEEF-439A-4DF7-8065-5F88C7517834-ANSI V1 EN
Figure 533: Voltage swell operational regions
For interruption, as shown in Figure 534, there is only one magnitude limit but four
duration limits for interruption classification. Now the event and counter type depends
only on variation duration time.
Voltage Int set
Voltage
xVref
Time (ms)
0
0
VVa Dur Max
VVa Int time 3
VVa Int time 1 VVa Int time 2
1.00
Momentary
interruption
Sustained
interruption
Temporary
interruption
Maximum duration
interruption
GUID-0204C8EA-102C-4327-BE84-DCE27747AA30-ANSI V1 EN
Figure 534: Interruption operating regions
Generally, no event detection is done if both the magnitude and duration requirements are
not fulfilled. For example, the dip event does not indicate if the TRMS voltage magnitude
remains between Voltage dip set 3 and Voltage dip set 2 for a period shorter than VVa dip
time 3 before rising back above Voltage dip set 3.
Section 10 1MAC059074-MB A
Power quality measurement functions
1046 615 series ANSI
Technical Manual