Rockwell Automation Publication 1426-UM001J-EN-P - August 2019 89
Metering Chapter 4
Voltage, Current,
Frequency Metering
This function applies to all PowerMonitor 5000 models.
Line-to-neutral voltage results are provided in Wye, split-phase, and high-leg
Delta metering modes. Line-to-neutral voltage results are not provided in Delta
(other than high-leg Delta) and Open Delta metering modes.
Voltage and current unbalance are calculated by using the following formula.
Table 11 - Voltage, Current, and Frequency Metering Metered Parameters
Parameter Description Range Units
V1_N_Volts RMS line to neutral voltage of individual phase or average of V1, V2, V3 0…9.999E15 V
V2_N_Volts
V3_N_Volts
Avg_V_N_Volts
VN_G_Volts RMS ground to neutral voltage 0…9.999E15 V
V1_V2_Volts RMS line to line voltage of individual phase or average of V1_V2, V2_V3 and V3_V1 0…9.999E15 V
V2_V3_Volts
V3_V1_Volts
Avg_VL_VL_Volts
I1_Amps RMS line current of individual phase or average of I1, I2, and I3 amps. 0…9.999E15 A
I2_Amps
I3_Amps
Avg_Amps
I4_Amps RMS current of phase 4, also known as the neutral or zero-sequence current 0…9.999E15 A
Frequency_Hz The frequency of the voltage 40.00…70.00 Hz
Avg_Frequency_Hz Average Frequency over 6 cycles 40.00…70.00 Hz
Voltage Rotation Voltage rotation has the following designations:
0 = Not metering
123 = ABC rotation
132 = ACB rotation
4 = No rotation
0…132
Pos_Seq_Volts Positive Sequence Voltage 0…9.999E15 V
Neg_Seq_Volts Negative Sequence Voltage 0…9.999E15 V
Zero_Seq_Volts Zero Sequence Voltage 0…9.999E15 V
Pos_Seq_Amps Positive Sequence Amps 0…9.999E15 A
Neg_Seq_Amps Negative Sequence Amps 0…9.999E15 A
Zero_Seq_Amps Zero Sequence Amps 0…9.999E15 A
Voltage_Unbalance_% Voltage percent unbalance 0.00…100.00 %
Current_Unbalance_% Current percent unbalance 0.00…100.00 %
Negative Sequence
Positive Sequence
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