MAGNELAB CT Connection Instructions

Magnelab Mini AC Current Transformer (CT) Connection Instructions
®
For use with HOBO
Applies to these Magnelab CTs
Onset Part No. Rated Current
T-MAG-0400-05 5 Amps
T-MAG-0400-20 20 Amps
T-MAG-0400-50 50 Amps
T-MAG-0400-75 75 Amps
Installing CTs in an energized electrical enclosure or on any energized conductor can result in severe injury or death. These CTs
are for installation by qualified personnel only. To avoid electrical shock, do not perform any installation or servicing of these CTs
unless you are qualified to do so. Disconnect and lock-out all power sources during installation and servicing.
This document provides instructions on connecting the Magnelab CTs listed above to the
™
FlexSmart TRMS Module used with either HOBO H22, U30, or RX3000 series data
loggers. It also lists configuration values used by HOBOware
logger for each CT.
Required
•
Selected Magnelab CT
•
HOBO H22, U30, or RX3000 series data logger
•
FlexSmart TRMS Module, Onset Part No: S-FS-TRMSA (for H22 series only) or
S-FS-TRMSA-D (for H22, U30, or RX3000 series)
•
HOBOware software, version 2.2.1 or higher (2.4.0 or higher for U30 series)
•
HOBOlink (for RX3000 series)
Connecting the CT to the FlexSmart TRMS Module
S-FS-TRMSA / S-FS-TRMSA-D*
FlexSmart TRMS Module
S-FS-TRMSA-D*
*The S-FS-TRMSA-D has a modular connector for
*The S-FS-TRMSA-D has a modular connector for connecting
connecting to a Smart Sensor port and thus is compatible
to a smart sensor port and thus is compatible with H22, U20,
with both H22 and U30 series data loggers. The
and RX3000 series loggers. The S-FS-TRMSA is compatible
S-FS-TRMSA is compatible with the H22 series only.
with the H22 series only.
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14255-C MAN-MINI-CT-x
H22, U30, and RX3000 Series Data Loggers
Output
0-333mV AC representing 0 to 5 Amps AC
0-333mV AC representing 0 to 20 Amps AC
0-333mV AC representing 0 to 50 Amps AC
0-333mV AC representing 0 to 75 Amps AC
DANGER!
HOBO H22, U30, or RX3000 Series Data
HOBO H22 or U30 Series Data Logger
Logger (H22-001 shown)
(H22-001 shown)
1. Open CT.
—HIGH VOLTAGE HAZARD
®
software to configure the
T-MAG-0400-xx
Current Transformer
See below for wire
capture procedure
LINE
Source Face
2. Place CT around the
individual wire carrying the
phase to be monitored.
3. Snap CT closed.
LOAD
Magnelab Part No.
SCT-0400-005
SCT-0400-020
SCT-0400-050
SCT-0400-075
Magnelab Mini AC
Current Transformer
S-FS-TRMSA (or S-FS-TRMSA-D)
FlexSmart TRMS Module
Terminal Block
Wiring Diagram for Single CT
S-FS-TRMSA (or S-FS-TRMSA-D)
FlexSmart TRMS Module
Terminal Block
Wiring Diagram for Two CTs
Black
From CT
White
Black
White From CT
Black
White From CT