Rockwell Automation Allen-Bradley E300

330 Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 8 Metering and Diagnostics
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 408 - 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 409 - Voltage Imbalance (Parameter 61)
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
Size (Bytes) 2
Scaling Factor 1
Units %