Compressed gas standard capacitor is a component for tangent delta measurement and capacitance test for capacitor, cable, bushing, insulator, transformer winding,and other insulation materials. It can be HV capacitance for HV measurement.Under some condition, it can be HV coupling capacitor for PD measurement.
Inside the barrel is SF6, with shielding socket, commonly used with QS37, QS 38, QS30,QS19, and other tangent delta bridge.
Basic parameters
Rated capacitance: 50 pF, 100 pF,200 pF, 300 pF, 350 pF
Power frequency test voltage: 1.2 UN
Rated frequency 50 Hz
discharge electricity at rated voltage ＜ 5 pC
Error of measured value: ≤±0.05%;
Capacitance error compared to nominal value: ±1%--≤±3%
Temperature coefficient (℃): ≤3*10-5
Pressure coefficient (bar) ≤2.2*10-3/bar
Dielectric dissipation (tangent delta) ≤5*10-5
SF6 gas pressure: 0.4±0.1 Mpa, at 20 ℃
Function:
Measurement of capacitance, tangent delta, partial discharge, and voltage withstand.