E-Mon E-PS-S-HV-RTU - Manual (Page 78)

Chapter 5 Configuring the PowerSmart Socket PQM General Meter Setup
78 PowerSmart Socket Power Quality Meter
7 Open Closed Closed
8 Closed Closed Closed
Instrument Transformer Correction Setup
Transformer correction allows you to compensate ratio and
phase angle inaccuracies of the voltage and current
instrument transformers.
Select General Setup from the Meter Setup menu, and then
click on the Transformer Correction tab.
The available options are listed in the following table.
Parameter Options Description
Channel None, V1-V3, I1-I4 Voltage/current channel
Test Point, % 5-200% Percent of the nominal (rated) voltage/current at
which the ratio correction factor and phase angle
error are specified
Ratio Correction Factor 0.900-1.100 The ratio of the true transformer ratio to the
marked ratio
Phase Angle Error +/-600 minutes The phase displacement, in minutes, between
the primary and secondary values. The phase
angle of a transformer is positive when the
secondary value leads the primary value.
You can define a total of 56 correction points for ratio and
phase correction data - up to 8 test points per voltage and
current channel, based on the transformer’s accuracy
characteristics. If more than one test point is given for a
channel, the meter dynamically interpolates to the actual
operating point depending on the measured voltage or