Split stream conducting wire testing apparatus and testing method thereof

Abstract

The invention relates to the circuit detecting device technical field, in particular to a current dividing wire detecting device and the detection method thereof, wherein the current dividing wire detecting device comprises a mutual inductor which comprises an iron core, a primary coil and a secondary coil which are composed of parallel wires connected externally; the two ends of the primary coil are respectively connected with a connecting device; the detection method comprises the following step of measuring the value of the current in the primary coil and calculating the value of the current in wires of a detected circuit according to the ratio of the number of windings of the primary coil to the number of windings of the secondary coil and the ratio of the current or voltage of the primary coil to that of the wires of the detected circuit; or detecting the value of voltage of the secondary coil and detecting the value of voltage between two detection points of the wires of the detected circuit; the invention is characterized by convenient operation, reduction of electrical loss, safety and reliability, small volume, easy installation and replacement, low manufacture costs, etc.

Description

Technical field: [0001] The invention relates to the technical field of circuit detection devices, in particular to a shunt wire detection device and a detection method thereof. Background technique: [0002] A current transformer is an electrical appliance used to measure and transform AC voltage or current, including a voltage transformer used to realize voltage transformation and a current transformer used to realize current transformation. The main role in electrical measurement is to expand the range of AC electrical instruments. [0003] The current transformer used in current detection devices, its closed iron core is made of silicon-copper sheets, and it is also made of cold-rolled silicon steel strip or high magnetic conductivity alloy strip. There are usually two windings on the iron core, one of which is The winding is connected to the power supply and is called the primary coil of the measuring transformer, and the other winding is connected to the measuring ins...

AI Technical Summary

Problems solved by technology

Because when using the existing current detection device to detect the current, the primary coil of the transformer is connected in series to the measured circuit, which is more troublesome to operate, and will cause the larger the current of the measured circuit, the larger the diameter of the wire, thus The larger the volume of the transformer required for measurement, the larger the volume of the transformer, there will be problems such as high cost, large power loss, and difficult replacement.

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