Apparatus and method for inhibiting transformer zero load closing inrush currents
A technology of exciting inrush current and no-load closing, applied in the field of transformers, can solve problems such as complex control, and achieve the effect of reliable control method, simple circuit, and suppression of exciting inrush current
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0028] see figure 1 , is a circuit diagram of a device for suppressing no-load closing excitation inrush current of a transformer according to a preferred embodiment of the present invention. like figure 1 As shown, the primary winding side of the transformer 30 applicable to the present invention is connected to the AC power source J1, that is, the power grid side through the main switch K1, and the secondary winding side of the transformer 30 is connected to the power supply network J2. The device provided by the present invention for suppressing the excitation inrush current of transformer no-load closing includes a control module 20 and a bypass circuit 10 connected in parallel with the main switch K1 between the AC power source J1 and the tra...
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