Manual

Chapter 5 Configuring the EM920
General Meter Setup
EM920 Power Quality and Revenue Meter 77
Tariff code Tariff rate
number
Tariff
input 1
Tariff
input 2
Tariff
input 3
1 Open Open Open
2 Closed Open Open
3 Open Closed Open
4 Closed Closed Open
5 Open Open Closed
6 Closed Open Closed
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