Surge suppression device with arc extinguishing function

Abstract

The invention provides a surge inhibition device with an arc-extinguishing function. The surge inhibition device comprises a voltage sensitive element, a first terminal, a second terminal and a non-conductive isolator. The non-conductive isolator comprises a driving part and an isolating part which are mutually independent. The driving part has a trend to move linearly from a first position to a second position thereof, the linear movement of the driving part can drive the rotation of the isolating part so as to enable the isolating part to move rotationally from a first position to a second position thereof, and at the second position of the isolating part, the isolating part is arranged between a departing part and a fixed part. According to the invention, the non-conductive isolator is divided into two parts to realize the arc-extinguishing function.

Description

technical field [0001] The invention relates to a surge suppression device for circuit protection, in particular to a surge suppressor with arc extinguishing function. Background technique [0002] Surge suppression device is an electronic device that provides safety protection for various electronic equipment, instruments and meters, and communication lines. When a surge current or voltage suddenly occurs in the electrical circuit or communication line due to external interference, the surge protector can conduct the shunt in a very short time, thereby avoiding damage to other equipment in the circuit by the surge. [0003] Surge suppression devices usually consist of one or more metal oxide varistors (MOVs), usually connected between phase and ground (or neutral), to dissipate voltage surge energy appearing on the line . MOV is a nonlinear electronic device, which may be subjected to various external stresses during operation, such as temperature stress or temporary over...

AI Technical Summary

Problems solved by technology

However, the disadvantage is that if the MOV chip has been broken down and short-circuited before the thermal protection switch is disengaged, an arc will be generated between the gaps formed after the thermal protector is disconnected, and the arc current at this time is equivalent to the short circuit of the power system current, ordinary thermal protectors may not be able to extinguish the arc

However, in these devices, the rotating part also serves as a driving part, so that the angle of rotation is limited, and the arc extinguishing effect cannot be achieved.

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