Current monitoring type electronic arc-control device
An electronic arc extinguishing and current monitoring technology, which is applied in the electrical field, can solve the problems of poor overload capacity, low reliability, and long conduction time of the arc extinguishing device, and achieve rapid arc extinguishment in the conduction time, improve reliability, and improve reliability. sexual effect
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[0029] Such as figure 1 As shown, one of the embodiments of the present invention is a current monitoring electronic arc extinguishing device applied to alternating current, which includes a power semiconductor device TR1 (a thyristor, and a bidirectional thyristor) connected to a mechanical switch SW1, a mechanical switch SW1 A current sensor CT1 is connected (it is a current transformer, the figure shows that the through-heart connection can also be connected in series, and the working principle is the same), the current sensor CT1 is used to detect the current passing through the mechanical switch SW1; the output terminal of the current sensor CT1 and the power semiconductor device The control terminal of TR1 is connected to the control circuit (A), and the mechanical switch connected to this device is the mechanical switch for arc extinguishing required by SW1. The J1 and J2 terminals are the common input and output terminals connected between the power semiconductor device...
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