NK TECHNOLOGIES AT Series Instructions Manual

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INSTRUCTIONS1. Run the wire you are monitoring through aper-ture.2. Mount the sensor to a surface if needed.3. Connect output wiring.A. Use 14-22 AWG 75˚C minimum copper con-ductors only and tighten to 5 inch-poundstorque.B. Make sure output load does not exceed productspecifications.C. Connect 24 VDC power supply and load inseries.4. Select RangeA. Choose correct range by positioning the Rangeswitch.AT & ATR 2, 3 & 4 SERIESAC Current Transducers4-20 mA OutputTrue RMS or Average RespondingAT R 3 - 420 - 24L - FLOUTPUT:420 - 4-20 mARANGE2 - 100, 133, 200 A3 - 375, 500, 750 A4 - 1000, 1333, 2000 ASENSOR TYPE:AT - AC current sensor, 4-20 mA outputloop poweredModel Number KeySpecificationsPower SupplyQuick “How To” GuideCASE STYLEFL - Solid-CorePower Supply 24 VDC nominal, 40 VDC maxOvervoltage CAT I, Class 2 or power limitedpower supplyInput Range Field selectable from 0-2000 A300 V line to neutral, CAT IIIOutput Signal 4-20 mA, loop poweredOutput Limit 23 mAAccuracy 1.0% FSMeasurement True RMS or average respondingFrequency Range ATR: 10-400 HzAT: 50-60 Hz, sinusoidalIsolation Voltage Tested to 3 KVResponse Time 500 ms (to 90% of step change)Sensing Aperture 3.0” (76 mm) diameterCase UL94 V-0 Flammability rated thermoplasticEnvironmental -4 to 122°F (-20 to 50°C) operating ambienttemperature0-95% RH, Non-condensingPollution Degree 2Altitude to 6561 ft (2000 meters)Listings UL and cUL listedCE certifiedRoHS compliantMinimum Power Supply = 12 VDC + Total Loop Voltage Drop0 250 500 750 100032 V22 V12 VOperatingRangeTotal Loop Impedance (Ohms)LOOPPOWER(VDC)POWER SUPPLY:24L - 24 VDC Loop PoweredMeasurementR - True RMS(Blank) - Average Responding3511 Charter Park Drive, San Jose, CA 95136Phone: 800-959-4014 or 408-871-7510Fax: 408-871-7515sales@nktechnologies.com, www.nktechnologies.com 292001301 Rev 4Know Your PowerOther NK Technologies Products Include:AC & DC Current TransducersAC & DC Current Operated Switches1 & 3Power TransducersCurrent & Potential Transformers (CTs&PTs)Warning! Risk of electric shock or per-sonal injurySafe operation can only be guaranteed if thetransducer is used for the purpose for whichit was designed and within the limits of thetechnical specifications. When this symbolis used, it means you should consult alldocumentation to understand the nature ofpotential hazards and the action required toavoid them.Warning! Risk of hazardous voltageWhen operating the transducer, certain partsmay carry hazardous live voltage (e.g. pri-mary conductor, secondary terminals). Thetransducer should not be put into service ifthe installation is not complete.

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