Title :
Behaviour and frequency dependence of AC-DC high voltage transfer standard under humidity step changes
Author :
Liu, L.X. ; Chua, S.W. ; Ang, C.K.
Author_Institution :
Nat. Meas. Centre of Singapore Productivity & Stand. Board, Singapore
Abstract :
Under humidity step changes, the measured AC-DC difference results from a thermal converter and a range resistor at 200 V in the frequency range from 40 Hz to 100 kHz have shown that a first order differential equation can be used to model the behaviour. The humidity coefficients for the model are found to be strongly frequency-dependent and the time constants are related to the changes in humidity.
Keywords :
convertors; differential equations; humidity; resistors; step response; transfer standards; voltage measurement; 200 V; 40 Hz to 100 kHz; AC-DC high voltage transfer standards; first order differential equation behaviour modeling; frequency-dependent model humidity coefficients; humidity step change behaviour/frequency dependence; measurement frequency range; range resistors; thermal converter AC-DC difference measurements; time constants; Analog-digital conversion; Differential equations; Frequency dependence; Frequency measurement; Humidity measurement; Impedance; Measurement standards; Resistors; Thermal resistance; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034875
