Transformer correction – E-Mon E-MM-RTU-D-N User Manual
Page 45

Chapter 4 Power Software Configuration tool
General Meter Setup
Multi-Mon
Multiple Circuit Energy Monitor
45
The following table lists available options.
Label
Label
Label
Label
Parameter
Parameter
Parameter
Parameter
Options
Options
Options
Options
Default
Default
Default
Default
Description
Description
Description
Description
SubMeter
SubMeter
SubMeter
SubMeter
Submeter number #1–#36
The submeter index
Phase L1
Phase L1
Phase L1
Phase L1
Phase L2
Phase L2
Phase L2
Phase L2
Phase L3
Phase L3
Phase L3
Phase L3
Phase current
input terminal
number
I1–I36,
None
See
note
1
Links a current input
terminal to the
corresponding submeter’s
phase voltage input V1, V2
or V3
CT
CT
CT
CT Primary, A
Primary, A
Primary, A
Primary, A CT primary
current
2
1-10000 A 50 A
Specifies the primary rating
of the submeter current
transformers
1
The device is pre-configured for twelve three-phase submeters as shown
in the picture.
2
Specify the CT ratings assuming a ×200% device inputs overrange. The
device inputs are preset for 100A current transformers with a 50A primary
rating.
Transformer Correction
Transformer Correction
Transformer Correction
Transformer Correction
Transformer correction allows you to compensate ratio and phase angle
inaccuracies of the user voltage transformers and Multi-Mon CTs.
To enter the setup dialog, select the device site from the list box
1
on the
Power Software toolbar, and then select Transformer Correction from the
Meter Setup menu.
If you use standard current transformers listed in the last table column, select
a transformer type to preset the transformer ratio correction factor and phase
angle error to their typical values.
1
- User CT option is not recommended, it doesn’t guaranty proper measurement
- LEM and THI transformer type options are no more manufactured.