SolidStateSensorsCSNSeriesClosedLoopCurrentSensorsFEATURES1Currentsensingupto1200amps1MeasuresAC,DCandimpulsecurrents1Lowestcost/performanceratio1Rapidresponse,noovershoot1Highoverloadcapacity1Highlevelofelectricalisolationbetweenprimaryandsecondarycircuits1SmallsizeandweightCLOSEDLOOPSENSORSClosedloopcurrentsensorsmeasureAC,DCandimpulsecurrentsover0-25,0-50,0-100,0-600and0-1200Ampranges.TheCSNSeriesisbasedontheprinciplesoftheHalleffectandthenullbalanceorzeromagneticfluxmethod(feedbacksystem).Themagneticfluxinthesensorcoreisconstantlycontrolledatzero.Theamountofcurrentrequiredtobalancezerofluxisthemeasureoftheprimarycurrentflowingthroughtheconductor,multipliedbytheratiooftheprimarytosecondarywindings.Thisclosedloopcurrentistheoutputfromthedeviceandpresentsanimageoftheprimarycurrentreducedbythenumberofsecondaryturnsatanytime.Thiscurrentcanbeexpressedasavoltagebypassingitthrougharesistor.
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