For protecting the control system of railway locomotive from the overvoltage of neutral section insulator and assuring normal operation of train

resistance-capacitance devices with high voltage and high power capacitor as core element are applied on both ends of the insulator.In this paper

a kind of ceramic capacitor bank with small size and low dielectric loss is designed and produced by way of using a kind of ceramic material with high dielectric constant.The capacitor contains 16 capacitor units in parallel connection and each composed of 3 ceramic capacitor elements in series connection.Through a reasonable arrangement of the banks’ structure and on the basis of assuring basic electrical performance

the stress concentration of epoxy resin is prevented and

at the same time

the usage amount of the resin is reduced and environmental protection performance of the product is improved.The product is characterized by high capacitance

small dielectric loss

environmental protection without oil contamination

has started to industrialized production and put in use at related lines.