Rockwell Automation 1426 PowerMonitor 5000 Unit - Manual (Page 85)

Rockwell Automation Publication 1426-UM001F-EN-P - November 2013 85
Power Quality Monitoring Chapter 5
Power Quality Event Example This example illustrates the actions taken by the PowerMonitor 5000 M6 model
in response to various types of power quality events.
Three waveforms are captured in this example. Waveform A represents two
cascading sags, the first one of which becomes an undervoltage after 60 seconds.
V1 Rms
% of nominal
Time
(seconds )
100
70
40
10
60 120 180 240
120
t1
t2 t3 t5 t6
t7
t8
t9
t4
Alarm tags
Sag_Indication_Detected
Swell_Indication_Detected
IEEE 1159_Under_Voltage_V1
1
0
1
0
1
0
300
T8
+
9
0 s
ec
T9
+
9
0 s
ec
...
Pre
Event
Post
Event
80% Sag
3600 Cycles
90% Sag
t1 t2 t4