CN203180515U

CN203180515U - Gapped double loop voltage protector

Info

Publication number: CN203180515U
Application number: CN 201320110269
Authority: CN
Inventors: 叶孟
Original assignee: SHANGHAI SHANGYOU ELECTRIC TECHNOLOGY Co Ltd
Current assignee: SHANGHAI SHANGYOU ELECTRIC TECHNOLOGY Co Ltd
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2013-09-04
Anticipated expiration: 2023-03-12

Abstract

The utility model relates to a gapped double loop voltage protector, comprising non-linear resistors, loop switches, capacitors, discharging gaps, a ground terminal E, a phase line A, a phase line B and a phase line C and characterized in that each capacitor is in parallel connection with a discharging gap; a loop switch is arranged in each parallel loop; and later the loop switch is in series connection with a non-linear resistor to form a protection circuit; one ends of all protection circuits are in mutual connection and the other ends are respectively in connection with the ground terminal E, the phase line A, the phase line B and the phase line C so as to form four protection circuits. The gapped double loop voltage protector is of a double volume loop design and is especially suitable for cutting off high frequency oscillation overvoltage protection generated by inductive load. The advantages are that a double loop gapped design possesses double functions of a capacitance-resistance absorber and a metal oxide lightning arrester, has excellent performance and is safe and reliable.

Description

Gapped double loop voltage protector

Technical field

The utility model relates to emergency protective circuit device technique field, is specifically related to a kind of gapped double loop voltage protector.

Background technology

China nineteen seventies developed three relatively composite type SiC lightning arrester the trend that shields to identical is arranged, but because the restriction of SiC body resistance performance, self can't normally move, so the alternate protection problem of lightning arrester is undecided always.Perfect along with the ZnO resistive performance, the alternate protection of three phase combined lightning arrester is theoretical is just put on " agenda " from nineteen nineties, and its excellent overvoltage protection performance is familiar with by most of electricity consumption industries.

The patent No. is the Chinese utility model patent of CN200820031658.9; a kind of " gapped three phase combined over-voltage protector " is provided; adopt four zinc oxide valve plates and discharging gap structure combining; simultaneously various independent sealed again, reached the problem of protecting each other and avoid wearing out etc.But, it is evident that this patent only has the function that absorbs atmospheric over-voltage and switching overvoltage, the high frequency oscillation overvoltage unprotect effect that produces because of inductive load for circuit, and do not have the function of capacitance-resistance absorber.

Summary of the invention

The purpose of this utility model provides a kind of gapped double loop voltage protector, and its technical concrete advantage is: one, shield when overvoltage reaches its gap discharge voltage; Two, no chargeability weakens agingly, increases the life-span.

For overcoming the deficiencies in the prior art, realize above-mentioned purpose, the utility model is achieved in that a kind of gapped double loop voltage protector, comprising: nonlinear resistance, circuit switching, capacitor, discharging gap, earth terminal E, phase line A, phase line B and phase line C; It is characterized in that: described capacitor is in parallel with discharging gap, is provided with circuit switching between the shunt circuit, connects with nonlinear resistance afterwards, constitutes a protection loop with this; One end in its each protection loop interconnects, and the other end is connected with earth terminal E, phase line A, phase line B and phase line C respectively, to constitute four protection loops.

Advantage of the present utility model is: the gapped design in double loop, have the dual-use function of rc absorber and metal oxide arrester, and excellent performance, safe and reliable.

Description of drawings

Fig. 1 is gapped double loop voltage protector schematic diagram.

Embodiment

Execution mode below in conjunction with accompanying drawing is described in further detail the utility model:

As shown in Figure 1, the utility model is a kind of gapped double loop voltage protector, comprise: nonlinear resistance 1, circuit switching 2, capacitor 3, discharging gap 4, earth terminal E5, phase line A6, phase line B7 and phase line C8, capacitor 3 is in parallel with discharging gap 4, be provided with circuit switching 2 between the shunt circuit, connect with nonlinear resistance 1 afterwards, constitute a protection loop with this; One end in its each protection loop interconnects, and the other end is connected with earth terminal E5, phase line A6, phase line B7 and phase line C8 respectively, to constitute four protection loops.

The gapped double loop of the utility model voltage protector is not limited to the above embodiments.Those skilled in the art make the change of unsubstantiality, all fall into protection range of the present utility model.

Claims

1. a gapped double loop voltage protector comprises: nonlinear resistance (1), circuit switching (2), capacitor (3), discharging gap (4), earth terminal E(5), phase line A(6), phase line B(7) and phase line C(8); It is characterized in that: described capacitor (3) is in parallel with discharging gap (4), is provided with circuit switching (2) between the shunt circuit, connects with nonlinear resistance (1) afterwards, constitutes a protection loop with this; One end in its each protection loop interconnects, the other end respectively with earth terminal E(5), phase line A(6), phase line B(7) and phase line C(8) be connected, protect loops to constitute four.