Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019 129
Metering Chapter 5
Voltage Unbalance
The SMC-50 control module provides a calculated Voltage Unbalance value.
The Voltage Unbalance calculation is equal to the largest deviation of the three
RMS phase voltage signals from the average RMS phase voltage divided by the
average. Note that the phase-to-neutral voltage is used in the calculation for
voltage unbalance.
Table 40 - Metering Parameters Associated with Voltage Unbalance
Parameter Number Name/Description Min/Max Value Default
Value
Access Units
296 Voltage Unbalance 0…100 0 R %
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