LZZBJ9-10C1 10kV Dry type Indoor High Voltage Epoxy Resin CT Current Transformer

The current transformer is a fully enclosed pillar structure, and the external insulation adopts outdoor special epoxy resin. It has the characteristics of arc resistance, ultraviolet resistance, aging resistance, long life, large creepage distance, small partial discharge, and strong overvoltage resistance. The body composed of the primary winding and the secondary winding and its iron core is enclosed in a pouring body of epoxy resin mixture. The primary P1 and P2 ends are led out from the top of the product, and the secondary S1 and S2 ends are sealed in the outlet box from the bottom of the product. Lead out. Pollution level: Grade IV;

LZZBJ9-10C1 current transformer series current transformers are epoxy resin cast fully enclosed pillar products, suitable for electric energy measurement, current measurement and relay protection in power systems with rated frequency of 50Hz or 60Hz and rated voltage of 10kV. This product complies with IEC60044-1 and GB1208 “Current Transformer” standards

Calibration method
Before conducting the current transformer error test, it is usually necessary to check the polarity, demagnetization, accuracy and other tests.

The principle of current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed core and winding. Its primary winding turns are few, and it is strung in the line of the current that needs to be measured, so it often has all the current flowing through the line, and the secondary winding turns are more, and it is connected in series with the measuring instrument and the protection circuit, and the current transformer is always closed in its 2 circuits when it is working, so the impedance of the measuring instrument and the series coil of the protection circuit is very small, and the working state of the current transformer is close to a short circuit.

Drawing