Description

Description:

The principle of Current tranformer LJB1 2KV, 10V, 800A, 50Hz is based on the principle of electromagnetic induction. A current transformer consists of a closed core and windings. Its primary winding has very few turns, and it is connected in series in the line of the current to be measured, so it often has all the current of the line flowing through it, and the number of secondary winding turns is relatively large, connected in series in the measuring instrument and the protection circuit, the current mutual inductance When the transformer is working, its secondary circuit is always closed, so the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to a short circuit.

According to different purposes, Current tranformer LJB1 2KV, 10V, 800A, 50Hz can be roughly divided into two categories: Current transformer for measurement (or measurement winding of current transformer): within the normal operating current range, it provides current information of the power grid to measurement, metering and other devices. Protection current transformer (or protection winding of current transformer): In the state of grid fault, it provides grid fault current information to relay protection and other devices.

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