E-Mon E-PS-E-RTU-N - Manual (Page 77)

Chapter 5 Configuring the PowerSmart+ PQM General Meter Setup
PowerSmart+ Power Quality Meter 77
In 4LN3, 3LN3 and 3BLN3 wiring modes, Min/Max volts, volt
demands and voltage harmonics represent line-to-neutral
voltages; otherwise, they will be line-to-line voltages.
Transformer Correction
While using Highly accurate External CT meter option, transformer
correction allows you to compensate ratio and phase angle inaccuracies of
the user voltage and current instrument transformers.
The following table lists available options.
Label Parameter Options Default Description
Ratio V1-V3 V1-V3 voltage
transformer
ratio correction
factor
0.700 to 1.300 1.000 The ratio of the true
transformer ratio to the
marked ratio.
Angle V1-V3
V1-V3
transformer
phase
angle
error, minutes
-600 to 600
0 The phase
displacement, in
minutes, between the
primary and secondary
values. The phase angle
of a voltage transformer
is positive when the
secondary value leads
the primary value.
Ratio I1-I3 I1-I3 current
transformer
ratio correction
factor
0.700 to 1.300 1.000 The ratio of the true
transformer ratio to the
marked ratio.
Angle I1-I3
I1-I3
transformer
phase
angle
error, minutes
-600 to 600
0 The phase
displacement, in
minutes, between the
primary and secondary
values. The phase angle
of a current transformer
is positive when the
secondary value leads
the primary value.