Veris H940 Installation Instructions

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 qualied 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. NEC2009 Article 100

No responsibility is assumed by Veris Industries for any consequences arising out of the

use of this material.

DANGER

Fan or Pump

CONTROLLER

Motor

CONTACTOR

(Status)

(Relay

Coil)

CONTROL POWER

3.0”

CURRENT MONITORING

940

Split-Core Current Switch, Fixed Trip Point,

with Command Relay

INSTALLATION GUIDE

SPECIFICATIONS

Sensor Power Induced from monitored conductor Relay Coil Power 24VAC/DC Amperage Range 1.5 to 200 A Status Output Ratings N.O. 1.0A@30VAC/DC, not polarity sensitive Insulation Class 600VAC RMS Tri p Point Fixed at 1.5 A Frequency 50/60 Hz Temperature Range -15° to 60°C (5° to 140°F) Humidity Range 10-90% RH, non-condensing O State Resis tance Open switch represents 1+ MΩ On State Resistance Closed switch represents <200 mΩ Terminal Block Wire Size 24 to 14 AWG (0.2 to 2.1 mm2) Terminal Block Torque 3.5 to 4.4 in-lbs (0.4 to 0.5 N-m) Agency Approvals UL 508 open device listing Installation Categor y Cat III, pollution degree 2

Do not use the LED status indicators as evidence of ap plied voltage. The product design provi des for basic insulation only.

INSTALLATION

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.

WIRING EXAMPLE

Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.

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

1. Locate a mounting surface for the removable mounting bracket that will allow the monitored conductor to pass through 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.

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

3. Wire the output connections between the sensor and the controller and between the sensor the the relay power source.

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

5. Secure the enclosure and reconnect power.

DIMENSIONS

Removable Mounting Bracket

3.1”

(79 mm)

Ø 0.3”

(8 mm)

1.1”

(26 mm)

0.8”

(21 mm)

2.8”

(70 mm)

2.5”

(64 mm)

1.0”

(25 mm)

Bracket can be mounted on three sides for added installation exibility.

Self-gripping Iris

1.4”*

(36 mm)

Use DIN Rail

Mounting clip

(Veris part

number AH01) to

mount on stan-

dard DIN rail.

H940

INSTALLATION GUIDE

PRODUCT OVERVIEW

The H940 is a current-sensitive switching device with integral command relay that monitors current (amperage) in the conductor passing through it. A change in amperage in the monitored conductor that crosses the switch (setpoint) threshold plus the hysteresis value will cause the resistance of the status output to change state, similar to the action of a mechanical switch. This status information can be fed back to a building controller that interprets the signal and separately switches the relay. The status output can also be used to switch the relay directly.

In this model, the setpoint is xed at 1.5 A. The status output is suitable for connection to building controllers or other appropriate data acquisition equipment operating at up to 30 volts. The H940 relay requires a 24 VAC/VDC external power supply for operation.

The H940 housing oers unprecedented mounting exibility. The mounting bracket can be attached in three dierent places. Additionally, the bracket is compatible with the Veris AH01 DIN Rail clip, allowing DIN mounting.

NOTES

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.

>200A (Sensor max.)

240A

RELAY RATINGS

RELAY CONTACT RATINGS

Resistive.................................. 8A@250VAC, 30VDC

Inductive................................. 3.5A@250VAC, 30VDC

TYPICAL COIL PERFORMANCE

Voltage AC DC

24V................................... 10mA 10mA

12V.................................................................... 20mA

Pull In Voltage................................................. 20.1VDC

Drop Out Voltage............................................. 5.2VDC

TROUBLESHOOTING

Problem Solution

No Reading at Controller • Check for control voltage at sensor (<30V)

• Check for amperage in monitored conductor (>1.5A)

• Assure that sensor core mating surfaces are clean and

that the core clamp is completely closed

300A:

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.

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.

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) them divide the controller reading by 4.

< 1.5 A (Sensor Min.)