Title :
The development of 5 nF parallel-plate capacitors with low voltage coefficient
Author :
Haiming Shao ; Wenfeng Li ; Dongxue Dai ; Bo Liang ; Feipeng Lin
Author_Institution :
Nat. Inst. of Metrol. of China, Beijing, China
Abstract :
This paper focus on the research of a parallel-plate air capacitor, which used as the low voltage arms in capacitive voltage ratio standards for power frequency. The electrodes of this newly-developed capacitor are made of Invar Alloy and placed in parallel. It can achieve large capacitance, low voltage dependence (VC) and low dissipation. These 5 nF standard capacitors were calibrated by using the 2:1 doubling voltage method with a current-comparator-based bridge, and the VC of which is 1.74×10-5/kV.
Keywords :
bridge circuits; calibration; capacitance measurement; capacitors; current comparators; frequency measurement; measurement standards; power measurement; voltage measurement; calibration; capacitance 5 nF; capacitive voltage ratio standard; current-comparator-based bridge; doubling voltage method; electrode; invar alloy; low voltage coefficient; parallel- plate air capacitor; power frequency standard; Capacitance; Capacitors; Current measurement; Electrodes; Low voltage; Standards; current comparator; dissipation; doubling voltage method; parallel-plate air capacitor; voltage coefficient;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898371
