16
Operation
OperatiOnal manual
MN156001EN October 2015 www.eaton.com
Manual CT configuration
NOTICE
HAZARD OF UNINTENDED EQUIPMENT OPERATION
Verify that the CT Configuration is entered exactly as the
CTs are installed on the electrical distribution system.
Failure to follow these instructions may result in
damage to the active filter or other equipment on
same electrical system .
Channel
is the location where the CT secondary wiring is
connected to the CT board.
When you touch the
Connection
data block, you scroll
through the available options:
L1+, L1-, L2+, L2-, L3+, L3- or None.
L1, L2, L3 and None describe which phase the CT is
connected.
The polarity of the CT connection is identified as “+” or “-”.
•
“+” indicates H1 of the CT is closest to the source,
•
“-” indicates H1 of the CT is closest to the load.
CT Calibration
allows for adjusting for errors.
CT Ratioe:
Touching the data box brings up a numerical
keypad to enter the primary ratio of the CTs being used.
Positione:
Select Load if the CTs are measuring only the
connected loads to be corrected. This option is not available
for systems operating in parallel. Select Source if the CTs
are measuring the current of all loads being corrected and
the active filter current.
CT Secondary Ratinge:
The rating of the CT secondary that
is installed.
Automatic CT configuration
An active filter that is connected to an electrical distribution
system at a voltage above the unit’s nameplate voltage
rating must have the external transformer parameters
properly set before performing the Automatic CT
Configuration. Refer to External transformer
on
page 26
.
NOTICE
HAZARD OF UNINTENDED EQUIPMENT OPERATION
Verify that the External Transformer parameters are correctly
entered before performing the Automatic CT configuration
procedure.
Failure to follow these instructions may result in
damage to the active filter or other equipment on
same electrical system .
To perform Automatic CT Configuration, do the following:
1.
In the
CT Ratio
field, enter the primary CT ratio.
2.
In the
CT Secondary Rating
field, select either 1 A or 5
A based on the secondary rating of the CTs installed.
3.
In the
Select channels CTs are connected to
field,
select the channels used to connect the CT secondary
wiring to the CT board of the unit. This information
should be provided by the installer. See Installation
Manual for CT installation details.
An information screen is displayed indicating that the
unit is ready to perform the automatic CT detection.
