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

Page 45

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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.

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