SYSTEM FOR MEASURMENT OF AC AND DC CURRENTS BY THE RESISTANCE PROBES IN LOW VOLTAGE ELETRICAL POWER SYSTEMS AND IN ELECTROTECHNICS

摘要

System for measurement of low voltage alternate current and direct current (up to 1 kV) in electroenergetics by means of electrical micro reducers. Measurement of electrical current is carried out by using electrical micro reducers (probe of resistance) and digital instrument - voltmeter. Suitability of measurement comprises in, that instead of electrical current transformer stations and/or ampermeters are used electric current micro reducers and only one digital measuring instrument (voltmeter) independently from the number of measurement points. Current micro reducer is a probe resistant to measurement of electrical current by voltage decline at the measuring part of probe and digital voltmeter. It has small dimensions, simple construction and demands no servicing. Carrying device for measurement of electrical current wherein this system is inbuilt and various connections for connecting different electrical consumers, is very suitable for quick and simple measurement of electricity of those consumers in an operation.;Sistem za merenje naizmennih i jednosmernih struja niskog napona (do 1 kV) u elektroenergetici pomou strujnih mikroreduktora. Merenje struje vri se upotrebom strujnih mikroreduktora (otporne sonde) i digitalnog instrumenta -voltmetra. Pogodnost merenja sastoji se u tome to se umesto strujnih transformatora i/ili ampermetara koriste strujni mikroreduktori i samo jedan digitalni merni instrument (voltmetar) nezavisno od broja mernih mesta. Strujni mikroreduktor je otporna sonda za merenje struje pomou pada napona na mernom delu sonde i digitalnog voltmetra. Malih je dimenzija, jednostavne konstrukcije i ne zahteva nikakvo odravanje. Prenosni uredjaj za merenje struje u koji je ugradjen ovaj sistem i razni prikljuci za prikljuenje razliitih elektrinih potroaa, veoma je pogodan za brzo i jednostavno merenje struje tih potroaa u pogonu.[System for measurement of low voltage alternate current and direct current (up to 1 kV) in electroenergetics by means of electrical micro reducers. Measurement of electrical current is carried out by using electrical micro reducers (probe of resistance) and digital instrument - voltmeter. Suitability of measurement comprises in, that instead of electrical current transformer stations and/or ampermeters are used electric current micro reducers and only one digital measuring instrument (voltmeter) independently from the number of measurement points. Current micro reducer is a probe resistant to measurement of electrical current by voltage decline at the measuring part of probe and digital voltmeter. It has small dimensions, simple construction and demands no servicing. Carrying device for measurement of electrical current wherein this system is inbuilt and various connections for connecting different electrical consumers, is very suitable for quick and simple measurement of electricity of those consumers in an operation.