Average l-n voltage, Voltage imbalance, Average l-n voltage voltage imbalance – Rockwell Automation 592- E300 Overload Relay User Manual User Manual
Page 245
Rockwell Automation Publication 193-UM015B-EN-P - June 2014
245
Metering and Diagnostics Chapter 7
Average L-N Voltage
Average L-N Voltage (Parameter 60) reports the average voltage of the monitored
L-N voltages. When Single or Three Phase (Parameter 176) is set to
Three Phase,
Average L-N Voltage is calculated as follows:
Average L-N Voltage = (L1-N Voltage + L2-N Voltage + L3-N Voltage) / 3
When Single or Three Phase (Parameter 176) is set to
Single Phase, Average L-N
Voltage is calculated as follows:
Average L-N Voltage = (L1-N Voltage + L2-N Voltage) / 2
Table 264 - Average L-N Voltage (Parameter 60)
Voltage Imbalance
Voltage Imbalance (Parameter 61) reports the percentage of uneven voltage being
supplied by the monitored power system. Voltage Imbalance is defined by the
following equation:
Voltage Imbalance = 100% * (Vd/Va)
where
Vd = Maximum L-L Voltage Deviation from the Average L-L Voltage
Va = Average L-L Voltage
Table 265 - Voltage Imbalance (Parameter 61)
Size (Bytes)
2
Scaling Factor
10
Units
Volts
Default Value
0.0
Minimum Value
0.0
Maximum Value
6553.5
Parameter Type
UINT
Size (Bytes)
2
Scaling Factor
10
Units
Volts
Default Value
0
Minimum Value
0
Maximum Value
200
Parameter Type
UINT