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2021-08The types and varieties of power cables mainly include the following aspects:35kV and below power cable type and commodity indication method1. Use Chinese pinyin to indicate the type of insulation, conductor data, inner protective layer data, and structural cha…
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2021-08Compared with traditional cables, it shows its advantages when transporting large currents. In addition, because of the selection of new technology applications, new technology and new processes, the junctions of the two sides of the busway and the connection o…
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2021-08Working principle of transformer: Mainly apply the principle of electromagnetic induction to work.Specifically: when an AC voltage U1 is applied to the primary side of the transformer, and the current flowing through the primary winding is I1, the current will …
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2021-081. Core materialThe iron core material used in the transformer is that the addition of silicon to the iron sheet can reduce the conductivity of the steel sheet and increase the resistivity. It can reduce the eddy current and reduce the loss. We usually call sil…
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2021-08After the vacuum circuit breaker trolley in the high-voltage switch cabinet is closed at the test position, the trolley circuit breaker cannot enter the working position. The switch cabinet is an electrical device. The external line enters the main control swit…
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2021-081) Check the load of the transformer and the temperature of the cooling medium, and check it with the oil temperature that should be under the same load and temperature of the cooling medium.2) Check the correctness of the calibration thermometer.3) Check the v…
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2021-081. Install an insulating heat-shrinkable sleeve on the medium and low voltage side of the transformerWhen the transformer is in use, the voltage level of the middle and low voltage side is very low. The outgoing line of the transformer is generally hard bus, so…
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2021-08① The transformer should be closed for five full-voltage shocks, and no abnormal phenomena occur. The magnetizing inrush current should not cause the protection device to malfunction.②Before the transformers are arranged in parallel, the phases should be chec…
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