Technical Specifications - Crompton Western Canada Inc.

Industrial, Switchboard andDEF66-13 Shunts880 SeriesFeaturesRivetted and solderedconstructionLong term stabilityIn-line busbar mountingShock and vibration testedABS American Bureau ofShipping ApprovedDesigned and manufactured to givemaximum reliability in arduousconditions, these heavy duty shuntsprovide an accurate D.C. millivoltsignal suitable for ammeter indicators,overload protection and controldevices.The 880 Series of shunts can besupplied in a variety of formats andconfigurations conforming with thestandards and/or practice of mostcountries and several specificspecifying authorities.SpecificationThe 880 Series complies with IEC51 (BS89) and when specified they conform to DEF Stan 66-13.Model N°:Model 881-92Ratings:1, 2, 5, 10, 15, 20, 25 &30A on insulated bases.Model 882-92 30, 40, 50, 60, 75, 80,100A, & 150AModel 883-92Model 884-92150, 200, 250, 300 & 500A600, 750, 800, 1000A5 Second 10A-500A = 10 x ratedwithstand: current501A-2000A = 5 x ratedcurrent2001A-12000A = 2 x ratedcurrent for 5 secondsTemperature 0.002% per °C between 25°coefficient: & 80°CModel 885-921500, & 2000AModel 886-92 2500, 3000, 4000, 5000,6000, 8000, 10000 &12000AIntermediate ratings are available on request.Accuracy Class:0.5 (0.25 USA)0.2 available on requestOutputs: Standard outputs are 50,60, 75, 100, 150mV andother millivolt drop valuesare available on request.Overloadswithstand:1.2 rated currentcontinuouslyAmbientTemperature:Temperature rise:Maximum load:Calibrated for 20°C theworking range is -20°C to+60°CCorrectly mounted in freelycirculating air, thetemperature rise will notexceed 90°C at the centreline of the element, and60°C at the joint line, basedon an ambient of 20°C(Potential circuit) formaximum accuracy, the loadshould not exceed 0.1% ofthe shunt current rating.ShuntsWeb: www.crompton-instruments.com • Email: crompton.info@tycoelectronics.com 2002

Industrial, Switchboard andDEF66-13 Shunts880 SeriesShunt leadsWhere ammeter indicators are ordered withthe shunts, leads 1 metre long, totalresistance 25mΩ should be used.Other lengths are available to order.ConstructionHighest quality materials, rugged design andadvanced manufacturing techniques are usedthroughout. The substantial solid brass endblocks have conservatively rated contactsurface areas and fixing hole dimensions toIEC51: (BS89): For maximum long termstability and strength, copper manganeseresistance elements are both rivetted andsoldered into slots in the end blocks. Above2000A, end blocks are multibladed. Forcurrent ratings below 30A model 881 basemounted shunts are supplied as standardunless otherwise specified. For basemounted shunts up to 100A see our model829 range.InstallationFor maximum heat dissipation, mount shuntsin the horizontal plane, with the blade facingvertical. If the shunt is mounted in thevertical position the '+ positive' potentialterminal should be the lower or bottom onedue to the "Peltier" effect. Utilise the full endblock surface area. Ample ventilation shouldbe provided. Busbars should be adequatelyrated, clean and level, with a thin coat ofsilicone grease applied to the contact surfacearea. Use M10 (3/8in) fixing bolts with model882 and M12 (1/2in) for all other shunts.Use flat and tension washers under the nutsand tighten fully.Insulated mounting blocks are available formodels 882, 883.DEF 66-13 ShuntsShunts with metric threads and dimensionsare fully compliant with and approved toDEF 66–13 and have a silver soldered endblock and painted resistance elements.They are supplied with removable solder tagson the potential terminals as additionallyrequired by MoD (Naval). Consult factory formore details.WarningShunts are uninsulated and protectionagainst accidental contact may be necessaryin order to comply with Health & Safetyregulations.Mounting BlocksInsulated mounting blocks available for 882 and 883 sizesShuntsWeb: www.crompton-instruments.com • Email: crompton.info@tycoelectronics.com 2002

Industrial, Switchboard andDEF66-13 Shunts880 SeriesModel 881 1 - 30AModel 882 10 - 150AModel 883 101 - 500A2 Holes11 Ø2 Holes14 ØModel 884 501 - 1000AModel 885 1001 - 2000A4 Holes14 Ø8 Holes14 Ø77 ±0.5Model 886D114.5 ± 18 Holes14 ØCurrent in Amps C D E F2001 - 2500 102 51 38 22501 - 3000 102 51 51 33001 - 5000 102 51 76 45001 - 6000 102 51 102 56001 - 7000 127 63.5 102 57001 - 9000 127 63.5 102 69001 - 10000 127 63.5 127 710001 - 11500 127 63.5 134 811501 - 12000 127 63.5 142 8Model 886 is designed for 1/4" (6.35mm)busbars. Alternatively Model 887 may bespecified for 3/8" (9.52mm) busbars.Design Options• Other mV outputs and current ratings• DEF stan 66 - 13 (NATO stock)• Other accuracy classes e.g.0.2Dimensions in mm 50mV 60mV 75mV 100mV 150mVModel 882 A ± 1 122 135 154 185 249B ± 0.5 95 108 127 158 222Model 883 A ± 1.5 154 162 175 196 238B ± 0.5 119 127 140 161 203Model 884 A ± 2 167 176 190 214 260B ± 0.5 129 138 152 176 222Model 885 A ± 4 252 263 279 307 362B ± 0.5 138 149 165 193 248Model A ± 3 321 330 342 362 404886/887 B ± 0.5 168 177 189 210 251ShuntsWeb: www.crompton-instruments.com • Email: crompton.info@tycoelectronics.com 2002