Comparative study of temperature influence on Thick film and Wire wound precision HV resistive divider

This paper focused to temperature influence of Thick film and Wire wound High voltage resistive divider. The deviation in resistance value depends upon the material used in resistance, type of construction and its coefficients. The temperature coefficient play significant role in calibration. The construction of HV divider reduces the temperature coefficient minimum by choosing some resistance with positive and other negative temperature coefficient. When these resistances are arranged in series, the total resistance changes for lower than that of individual but still influenced with the working temperature of HV divider. The study of deviation due to environment temperature from 20°C to 30°C of Thick film divider and Wire wound divider up to 100 kV dc under stable condition of source traceable from National Standard. The nominal scale factor of both dividers are 10000:1, the comparative study investigate the influence of temperature in wire wound resistive divider is 5 ppm/°C where as thick film resistive divider have 1 ppm/°C.