Veris H720 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.

DANGER

CURRENT MONITORING

INSTALLATION GUIDE

H720

720

Solid-Core Current Sensor, 4-20 mA Output,

VFD Compatible

Installer’s Speciﬁcations

Sensor Power 12-30 VDC, 30 mA max. Amperage Range 0 to 200 A continuous Insulation Class 600 VAC RMS Output 4-2 0 mA Zero Adjustment 3.5 to 4.5 mA Span Adjustment 20 to 200 A, full scale Frequency Range 10 to 80 Hz Temperature Range -15 ° to 60°C (5° to 14 0°F) Humidity Range 10-90% RH non-condensing Accuracy 0.5% (combined linearity, hysteresis, and repeatability Response Time 2 sec Terminal Block Max. Wire Size 14 AWG Terminal Block Torque (nom.) 4 in-lbs (0.45 N-m) Agency Approvals UL 508, E150462

The product design provi des for basic insulation only.

INSTALLATION

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

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

CONTACTOR

VFD

CONTROLLER

Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other countri es.

Motor

Fan or Pump

GND 4-20mA IN 12 - 30VDC

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 device at least 1/2” 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 (solid-state contac t).

4. Route the conductor through the sensor’s center window and slip the assembly into the mounting bracket.

5. Adjust the Zero and Span settings. Span can be set at any point from 20A to 200A.

6. Secure enclosure and reconnect power.

DIMENSIONS

Removable/Adjustable Mounting Bracket

0.7" Dia

(19 mm)

(55 mm)

(76 mm)

0.75" Dia (19 mm)

2.15"

3.0"

0.33"

(9 mm)

3.13"

(80 mm)

1.00"

(26 mm)

H720

INSTALLATION GUIDE

OPERATION

The H720 is a current-sensitive transducer that monitors current (amperage) in the conductor passing through it. The H720 has a 4-20 mA analog output that corresponds to 0-20 A to 0-200 A owing through the conductor (adjustable Span setting). The status output is suitable for connection to building controllers or other appropriate data acquisition equipment operating at up to 30 volts. The H720 requires a 12-30 VDC power supply to generate its output.

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.

240A

> 200 A (Sensor max.)

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.

WIRING OPTIONS

Option 1:

Automation

COM

(12-30 VDC)

4-20 mAINPWR OUT

Panel

H720

COM

OUT+PWR

Span Zero

Option 2:

External

Power

Supply

H720

Automation

Panel

COM

OUT+PWR

COM 4-20 mA

Span Zero

ZERO AND SPAN SETTING

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 controller to account for the extra turns, e.g., if four turns pass through the sensor (as shown), then divide the normal controller reading by 4.

< 1 A (Sensor Min.)

0.5A

20mA

SENSOR OUTPUT

4mA

0A 20 to 200A*

SENSED AMPS

*Adjusted with Span Setting

TROUBLESHOOTING

Problem Solution

No Reading at Controller • Check Zero and Span settings.

• Check for control voltage at sensor (< 30 V)

• Check for amperage in monitored conductor (> 1 A)

Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other countri es.