Onset U30, H22 Operating Manual
Continental Control Systems (CCS) ACT Series Split-Core Current Transformer (CT)
Connection Instructions
For use with HOBO® H22, U30, and RX3000 Series Data Loggers
Applies to these CCS ACT Series CTs
Onset Part No. Rated Current Output CCS Part No.
T-ACT-0750-020 20 Amps 0-333mV AC representing 0 to 20 Amps AC ACTL-0750-020
T-ACT-0750-050 50 Amps 0-333mV AC representing 0 to 50 Amps AC ACTL-0750-050
T-ACT-0750-100 100 Amps 0-333mV AC representing 0 to 100 Amps AC ACTL-0750-100
T-ACT-0750-250 250 Amps 0-333mV AC representing 0 to 250 Amps AC ACTL-0750-250
DANGER!—HIGH VOLTAGE HAZARD
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 CCS ACT series CTs listed
above to the FlexSmart
series data loggers. It also lists configuration values used by HOBOware
™
TRMS Module used with HOBO H22, U30, or RX3000
®
software to
configure the logger for each CT.
Required
• Selected CCS ACT series CT
• HOBO H22, U30, and 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, and RX3000 series)
• HOBOware software, version 3.5 or higher (for H22 and U30 series)
• HOBOlink (for RX3000 series)
Dimensions
• Width: 60.4 mm (2.38 in.)
• Height: 61.0 mm (2.40 in.)
• Thickness: 22.9 mm (0.90 in.)
• Window: 20.0 mm (0.78 in.)
• Weight: 172 grams (6.1 oz)
Split-Core Current Transformer
CSS Accu-CT
© 2013–2016 Onset Computer Corporation. All rights reserved. Onset, HOBO, HOBOware, and HOBOlink are registered trademarks of Onset Computer Corporation.
Accu-CT is a registered trademark of Continental Control Systems, LLC. Other products and brand names may be trademarks or registered trademarks of their
respective owners.
17053-D
Continental Control Systems (CCS) ACT Series CT Connection Instructions
Connecting the CT to the FlexSmart TRMS Module
HOBO H22, U30, or RX3000 Series Data
HOBO H22 or U30 Series Data Logger
S-FS-TRMSA / S-FS-TRMSA-D*
FlexSmart TRMS Module
Logger (H22-001 shown)
(H22-001 shown)
T-ACT-0750-xxx
Current Transformer
S-FS-TRMSA (or S-FS-TRMSA-D)
FlexSmart TRMS Module
Terminal Block
S1~
S2~
S2~
S1~
Black
White
From CT
Wiring Diagram for Single CT
S-FS-TRMSA (or S-FS-TRMSA-D)
FlexSmart TRMS Module
Terminal Block
S1~
S2~
S2~
S1~
Black
White
Black
White
Wiring Diagram for Two CTs
From CT
From CT
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 to a Smart Sensor port and thus is compatible
connecting to a smart sensor port and thus is compatible
with both H22 and U30 series data loggers. The
with H22, U20, and RX3000 series loggers. The S-FS-
S-FS-TRMSA is compatible with the H22 series only.
TRMSA is compatible with the H22 series only.
1. Open CT.
Source Face
See below for wire
capture procedure
LINE
LOAD
2. Place CT around the
individual wire carrying the
phase to be monitored.
3. Snap CT closed.
Configuring the Data Logger for the CT using HOBOware Software
HOBOware software provides configuration files for the CTs. The table below lists the recommended configuration values for
each CT that these files contain. For information on loading configuration files, refer to the software documentation.
Onset Part No: Channel Name Raw Value 1 (mV) Raw Value 2 (mV) Scaled Value 1 Scaled Value 2 Scaled Units
T-ACT-0750-020 Current 0 333.33 0 20 A
T-ACT-0750-050 Current 0 333.33 0 50 A
T-ACT-0750-100 Current 0 333.33 0 100 A
T-ACT-0750-250 Current 0 333.33 0 250 A
2
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