Onset CTV Operating Manual
Split-core AC Current Transformer (CTV-x)
–
(AC Amperage to DC Voltage Transducer)
For use with HOBO® U12, UX120-06M, MX1104, and MX1105
data loggers and HOBO ZW data nodes
Specifications
20 AMPS AC
Current Range
Accuracy with U12 ±4.5% of full scale (includes logger accuracy)
Accuracy with ZW ±4.0% of full scale (includes data node accuracy)
Accuracy with UX120006M, MX1104, and
MX1105
Response time (from 10%
to 90% of amplitude):
Input Current AC current, sine wave, single phase 50 Hz or 60 Hz, load
Output 0-2.5 V DC
Voltage rating 600 V AC
Temperature rating
Construction Molded plastic housing for indoor use per UL508
Cable 1.8 m (6 ft.)
Window Size
Dimensions
CTV-A 2
CTV-B 5–50 AMPS AC
CTV-C 10–100 AMPS AC
CTV-D 20–200 AMPS AC
CTV-E 60–600 AMPS AC
±2.1% of full scale (includes logger accuracy)
CTV-A approx. 440 milliseconds
CTV-B approx. 200 milliseconds
CTV-C approx. 100 milliseconds
CTV-D approx. 450 milliseconds
CTV-E approx. 490 milliseconds
power factor 0.5 to 1.0 lead or lag
CTV-A, CTV-B, CTV-C: -15° to 60°C (5° to 140°F),
CTV-D, CTV-E: -15° to 40°C (5° to 104°F)
CTV-A, CTV-B, CTV-C: 28 x 20 mm (1.1 x 0.8 in.)
CTV-D: 39 x 32 mm (1.54 x 1.26 in.)
CTV-E: 74 x 62 mm (2.92 x 2.46 in.)
CTV-A, CTV-B, CTV-C: 79 x 71 x 36 mm (3.1 x 2.8 x 1.4 in.)
CTV-D: 100 x 120 x 29 mm (3.92 x 4.72 x 1.14 in)
CTV-E: 135 x 150 x 28 mm (5.3 in. x 5.91 in. x 1.12 in.)
The CE Marking identifies this product as complying with
all relevant directives in the European Union (EU)
Notice
• This product is not intended for life or safety applications.
• Do not install this product in hazardous or classified locations.
• The installer is responsible for conformance to all applicable codes.
• Mount this product inside a suitable fire and electrical enclosure.
6225-H MAN-CTV
Failure to follow these instructions will result in death or serious injury.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Follow safe electrical work practices.
• See NFPA 70E in the USA, or applicable local codes.
• This equipment must only be installed and serviced by qualified electrical personnel.
• Read, understand and follow the instructions before installing this product.
• Turn off all power supplying equipment before working on or inside the equipment.
• Use a properly rated voltage sensing device to confirm power is off.
• DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION
Specification Note: For CE compliance, conductor shall be insulated according to IEC 61010-1:2001,
Installation Category III or equivalent. The product design provides for basic insulation only.
DANGER
Using the CTV with the HOBO logger or data node
1. Insert the 2.5 mm plug of the CTV into an external input of a logger or node.
• For MX1104 and MX1105 loggers, select the appropriate sensor type in the app when
you are configuring the logger.
• For U12 and UX120-006M loggers, select the appropriate channel in the Launch
Logger window in HOBOware.
• For a ZW data node, open HOBOnode Manager in HOBOware and select the sensor
type (-A, -B, etc.) in the Configure Sensor pane that matches the Current Transformer
model number.
2. If working with HOBOware, select the correct AC current range, which is provided on
the CTV label. Failure to select the correct range will result in inaccurate data. Do not
exceed the AC current rating of the CTV.
Installation
• The I-bar can be hinged open in order to install the CTV around an individual wire
carrying a single phase. Rotate the I-bar open (on the CTV-D and -E units, press in the
I-bar tabs to open). Place the wire in the CTV window and then snap the I-bar closed.
• The I-bar on the CTV-D and CTV-E units is fully removable for easy installation. Make
sure the I-bar is replaced in the proper orientation to ensure correct readings. The
contacts on the unit and I-bar are marked with matching notations.
• The CTV-A, -B, and -C units are provided with a snap-on mounting plate which can be
removed from the CTV and mounted separately. Mount the plate under the wire you
want to monitor and, once the cable is installed into the CTV, snap the CTV/wire
assembly onto the mounting plate.
• Remove the CTV from the plate by opening the CTV and sliding it off the plate or
gently rocking the CTV slightly and pulling up at the same time.
© 2013–2019 Onset Computer Corporation. All rights reserved. Onset, HOBO, and
HOBOware are trademarks or registered trademarks of Onset Computer Corporation.
6225-H MAN-CTV
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