bandsincludedinthekit,theanalyzercanbeinstalled,forinstance,
onanelectricpole.
Theanalyzerhasfivevoltageinputterminals,markedL1/A,L2/B,L3/C,
NandPE,andtheNterminal(neutralconductor)isshared.Therange
ofvoltagesmeasuredbyfourmeasuringchannelsis±1150V
maximum.Currentismeasuredbymeansoffourcurrentinputsto
whichseveraltypesofcurrentclampscanbeconnected,suchas
flexibleclampsF-1,F-2,F-3withthe3000Anominalrange(theonly
differencebetweenthemisthecoilsize)andtheC-4clamp(range
1000AAC),C-5clamp(range1000AAC/DC)andC-6clamp(range10A
AC).
Theinstrumentisequippedwithahigh-capacityremovableSD
memorycard(SecureDigital).Whentherecordingiscompleted,the
cardcanberemovedfromtheanalyzerandthedatacanbe
transferredquicklytothecomputerbymeansofanexternalcard
readerandthesoftwarewhichisincludedinthekit.Thedatacanalso
bereadbytwocommunicationlinks:USBorwirelesstransmission.
PowerqualityanalyzerPQM-701isanadvancedproductfor
comprehensivemeasurements,analysisandrecordingofthe
parametersofthe50/60Hzmainssystemsandofthepowerquality
accordingtothe
EN50160.
ThePQM-701recordscurrentandvoltagecrestfactors,frequency
valuesinthe40Hz-70Hzrange,activepower,apparentpower,
distortionpower,reactivepowerwithdeterminationofitstype
(capacitiveorinductive).Twomethodscanbeusedforpower
measurements:BudeanuorIEEE1459.Suchparametersasactive
energy,reactiveenergy,apparentenergy,powerfactor,cosφand
tanφareofcourserecordedaswell.Thenextvalueswhichwecan
analyzearetransformeroverloadlevelcausedbyharmonicdistortion
(K-factor),currentandvoltageharmonicsuptothe50th,currentand
voltageTHD,short-termandlong-termflicker,voltageandcurrent
unbalance.Recordedalsoareallevents,suchasvoltagedips,swells
andinterruptionswithwaveforms(alsoforcurrents).Aftereach
averagingperiod,theanalyzercanrecordsnapshotwaveformsfor
currentandvoltage.
Allthesefunctionsallowacomprehensiveanalysisofphenomenain
thetestedelectricalmainssystem.
ThePQM-701issuppliedwithallnecessaryconnectionandpower