Electronic current transformers are based on Rogowski coils with small size, light weight, wide frequency band, factors that more or less affect the accuracy of the coil in the measurement operation, such as the size of the circuit conductor under test relative to the coil, and external electromagnetic interference. , The circuit under test has…
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What is the Rogowski coil? The Rogowski coil is a flexible clip-on hybrid inductor coil that can be easily coiled around a current conductor for measuring. It is capable of measuring large currents of several thousand amperes without expanding the size of the voltage transformer. Rogowski coils are electronic voltage transformers used to measure alternating currents such as…
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1)The wiring of the current transformer should follow the series principle: the primary winding should be connected in series with the circuit under test, while the secondary winding should be connected in series with all loadded instruments. 2)Selecting appropriate transformation ratio according to the measured current, otherwise the error will be larger. At the same time, one side of the…
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The size of the current varies tremendously in the power generation, power transformation, power transmission, power distribution and power circuit, from several Amp to thousands of Amp. In order to facilitate measurement, protection and control, it needs to be converted to a relatively uniform current. In addition, the voltage of circuit is high and may cause danger when…
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The current transformer is an instrument and equipment that converts a large current on the primary side into a small current on the secondary side for accurate measurement according to the basic principle of the magnetic effect of current. It is mainly composed of a closed iron core and windings. Its primary side winding has a very…
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Electrical debugging is a key content in the work of power installation engineering projects. In the electrical debugging work, the secondary circuit inspection is also a key adjustment content. It is related to the precise measurement, maintenance, communication and other functions of the power supply system. A prerequisite that cannot be fully utilized. In the…
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