Veris H308 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

Removable Mounting Bracket

0.3”

(8 mm)

6 AWG max.

1.6”

(40 mm)

1.5”

(38 mm)

0.6”

(15 mm)

1.8”

(46 mm)

Ø 0.18” (x2)

(5 mm)

CURRENT MONITORING

INSTALLATION GUIDE

US Patent 7,193,428 (other patents pending)

H308

RoHS

Compliant

308

Micro Split-Core Current Switch,

Adjustable Trip Point

Installer’s Speciﬁcations

Amperage Range 0.75 to 50 A Continuous Setpoint Adjustable Sensor Supply Voltage Induced from monitored conductor Insulation Class 600 VAC RMS (UL), 300 VAC RMS (CE), insulated conductors only Temperature Range -15° to 60°C (5° t o 140°F) Humidity Range 10-90% RH non-condensing Frequency 50/60 H z Status Output Ratings N.O. 1.0 A@30 VAC/DC, not polarity sensitive O State Resis tance Open switch represents 1+ MΩ of resistance Terminal Block AWG Range 16-22 AWG Terminal Block Torque Range 7 in-lb Agency Approvals UL508, E150462

Specication Note: For CE compliance, conductor shall be insulated according to IEC 61010‑1:2010, Installation Category III or equivalent. The product design provides for functional 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

Insulated Conductor ONLY

BUILDING AUTOMATION

POWER SOURCE

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.

POWER SOURCE

UNIT VENT HEATER

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 1/2” from any uninsulated conduc tors. 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 contact).

4. Snap the sensor over the wire to be monitored and push the latch until it is securely closed. Clip the assembly to the mounting bracket.

5. Calibrate the current switch (see Calibration section).

6. Secure enclosure and reconnect power.

DIMENSIONS

Setpoint

adjustment

screw here

H308

INSTALLATION GUIDE

OPERATION

The H308 is a current-sensitive switching device that monitors current (amperage) in the conductor passing through it. A change in the conductor’s amperage that crosses the adjustable switch threshold plus the hysteresis value causes the resistance of the FET status output to change state, similar to the action of a mechanical switch. The status output is suitable for connection to building controllers or other appropriate data acquisition equipment operating at up to 30 volts. The H308 requires no external 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

> 50 A (Sensor max.)

300A:

H68xx‑5A CT

CALIBRATION

Before beginning calibration, establish normal load conditions.

OK!

Then choose either A or B below.

A. To monitor under-current (belt loss, coupling shear, status)

OK!

1. Turn setpoint screw clockwise until Status OPEN LED turns ON.

2. Slowly turn the screw counter-clockwise until the Status CLOSED LED just turns ON.

Status

Setpoint

Closed

OK!

STOP

Status

Open

Setpoint

1/4

STATUS

OK!

Setpoint

STOP

3.Turn the screw an additional 1/4 turn counter-clockwise for operational margin.

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.

< 0.75 A (Sensor Min.)

0.1A

B. To monitor over-current (mechanical problems, seized impeller)

1/4

STATUS

OK!

STOP

3. Turn the setpoint screw an additional 1/4 turn clockwise for operational margin.

OK!

1.Turn setpoint screw counter-clockwise until Status

Setpoint

Status Closed

CLOSED LED turns ON.

2. Slowly turn the setpoint screw clockwise until the Status OPEN LED just turns ON.

Status

Setpoint

Open

Setpoint

STOP

TROUBLESHOOTING

Problem Solution

No Reading at

Controller

Setpoint screw

has no stops

Both LEDs

are lit

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

• Check for amperage in monitored conductor (> 0.75A)

• Assure that sensor core mating surfaces are clean and that the core clamp

is completely closed

• Verify that the setpoint is not above operating amps by turning screw

CCW (up to 20 turns) until the contacts close (Status Closed LED turns on).

The 20 turn setpoint screw has a slip clutch to prevent damage at either

end. To re-start the calibration process, turn the screw 20 full turns CCW. This sets the device in its original and most sensitive position. Resume calibration from the beginning.

The screw has been turned too far CW. Turn the screw 20 full turns CCW

and resume calibration from the beginning.

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.