Installation Guide

Current Monitoring

TM H952

Split-Core Current Transducer with Relay,

0-5 VDC Output

Product Overview

The H952 is a current-sensitive device that monitors current (amperage) in any of three field-selectable ranges;

0-30, 0-60, or 0-120 amperes. These ranges represent the maximum current that can be applied to the monitored conductor. The H952 transforms the monitored current into a 0-5 VDC output suitable for connection to building controllers or other appropriate data acquisition equipment. It is also equipped with a command relay.

The H952 housing offers unprecedented mounting flexibility. The mounting bracket can be attached in three different places. Additionally, the bracket is compatible with the Veris AH01 DIN Rail clip, allowing DIN mounting.

DANGER

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

• Only install this product on insulated conductors.

Failure to follow these instructions will result in death or serious injury.

A qualified person is one who has skills and knowledge related to the construction and operation of this electrical equipment and the installation, and has received safety training to recognize and avoid the hazards involved. NEC2011 Article 100

No responsibility is assumed by Veris Industries for any consequences arising out of the use of this material.

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.

Specifications

Sensor Power Induced from monitored conductor

Amperage Range 0 to 30/60/120 A (selectable)

Insulation Class 600VAC RMS

Relay SPST, N.O., 12VDC

Frequency Range 50/60 Hz

Temperature Range -15° to 60°C (5° to 140°F)

Humidity Range 10 - 90% RH, non-condensing

Accuracy ±2% full scale from 10% to 100% (selected range)

Response Time 2 sec.

Terminal Block Wire Size 24-14 AWG (0.2 to 2.1 mm 2 )

Terminal Block Torque 3.5 to 4.4 in-lbs (0.4 to 0.5 N-m)

Agency Approvals UL 508 open device listing

Dimensions

Removable Mounting Bracket

1.0”

(25 mm)

3.1”

(79 mm)

1.1”

(26 mm)

0.8”

(21 mm)

Bracket can be mounted on three sides for added installation flexibility.

Z202265-0B

Self-gripping Iris

2.8”

(70 mm)

Ø 0.3”

(8 mm)

1.4”

(36 mm)

Use DIN Rail Mounting clip

(Veris part number AH01) to mount on standard DIN rail.

2.5”

(64 mm)

3.0”

(76 mm)

Page 1 of 3 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 09133

Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.

Other companies’ trademarks are hereby acknowledged to belong to their respective owners.

TM

Installation Guide

Current Monitoring

H952

Installation

Notes

TM

Disconnect and lock out power to the enclosure containing the conductor to be monitored.

CONTROLLER

1. Locate a mounting surface for the removable mounting bracket that will allow the monitored conductor to pass through the center window when it is installed and that will keep the product at least ½” (13 mm) from any uninsulated conductors.

Determine cable routing for the controller connection, allowing wiring to reach the mounting location.

DO (Relay Coil)

AI (0-5VDC)

CONTROL

POWER

2. Drill holes to mount the bracket to the chosen surface using the included screws.

CONTACTOR

3. Set the desired amperage range (30, 60, or 120 Amps).

4. Wire the output connections between the sensor and the controller (0-5 VDC).

5. Snap the sensor over the wire to be monitored and clip the assembly to the mounting bracket.

6. Scale the controller software to match the sensor’s output.

7. Secure the enclosure and reconnect power.

Motor

Fan or Pump

For load currents greater than sensor maximum rating:

Use a 5 Amp (H68xx series) current transformer (CT) as shown. This technique can be combined with wrapping (see below) to add range for a low current load on a high current source.

240A >120 A (sensor max.)

4A

300A: 5A

H68xx-5A CT

DANGER: 5A CTs can present hazardous voltages. Install

CTs in accordance with manufacturer's instructions.

Terminate the CT secondary before applying current.

For load currents less than sensor minimum rating:

Wrap the monitored conductor through the center window and around the sensor body to produce multiple turns. This increases the current measured by the transducer. Program the controller to account for the extra turns (e.g., if four turns pass through the sensor (as shown), divide the normal reading by 4).

< 1.5 A (Sensor Min.)

4x

1A

CAUTION

RISK OF EQUIPMENT DAMAGE

• Derate the product’s maximum current for the number of turns through the sensing window using the following formula.

Rated Max. Amps ÷ Number of Turns = Max. monitored Amps e.g. : 100A ÷ 4 Turns = 25 Amps max. in monitored conductor

• Failure to follow these instructions can result in overheating and permanent equipment damage.

Z202265-0B Page 2 of 3 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 09133

Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.

Other companies’ trademarks are hereby acknowledged to belong to their respective owners.

Installation Guide

Current Monitoring

H952

Wiring

Relay Information

Scaling

Automation Panel

+

(Comm)

0-5 VDC Input

9-12 VDC

To Energize Relay

Amperage Range

120

60

30

+

Output

0-5 VDC

- +

N.O. Command Relay Output

5V

RELAY CONTACT RATINGS (N.O.)

Resistive........ 5A@240

5A@30

VAC

VDC

Inductive........ 2A@240

2A@30

VAC

VDC

TYPICAL COIL PERFORMANCE

Voltage

24 ......................................................

12

Pull In Voltage

AC

15mA

....................................................................

DC

15mA

20mA

12VDC .............................................................. 8.4VDC

Drop Out Voltage

12VDC .............................................................. 3.0VDC

TM

0V

0A

SENSED AMPS

*Factory calibrated ranges selected with the amperage range switch

30/60/120A*

Z202265-0B Page 3 of 3 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected] 09133

Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.

Other companies’ trademarks are hereby acknowledged to belong to their respective owners.