Title :
The potential transformer bridge with current comparator for measuring the voltage dependence of compressed-gas capacitors
Author_Institution :
Dipartimento di Elettrotecnica, Politecnico di Milano, Italy
Abstract :
An alternative method for measuring the voltage dependent capacitance variation (VDCV) of compressed-gas capacitors is described. In this method the VDCV of the HV capacitor under test is measured by comparing it with a capacitor standard, which is supplied with the secondary (low) voltage of a potential transformer. This transformer has its primacy parallel connected with the capacitor under test. The paper presents and criticizes the test results obtained and claims an uncertainty of at least 0.5 ppm
Keywords :
bridge circuits; calibration; capacitance measurement; coupled circuits; current comparators; measurement standards; potential transformers; power capacitors; voltage measurement; HV admittance potential transformer; HV capacitor under test; calibration; capacitance variation; capacitor standard; compressed-gas capacitors; current comparator; potential transformer bridge; uncertainty; voltage dependence measurement; Bridge circuits; Calibration; Capacitors; Circuit testing; Current measurement; Detectors; Frequency measurement; Power transformer insulation; Voltage measurement; Voltage transformers;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE
Conference_Location :
Brussels
Print_ISBN :
0-7803-3312-8
DOI :
10.1109/IMTC.1996.507444
