CN2518252Y

CN2518252Y - Building blocking combined overvoltage protector

Info

Publication number: CN2518252Y
Application number: CN 01276386
Authority: CN
Inventors: 孙新珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-24
Filing date: 2001-11-24
Publication date: 2002-10-23
Anticipated expiration: 2011-11-24

Abstract

The utility model discloses a building block combination over-voltage protector, which has the structure that three groups of metal oxide resistors (1) are connected with a metal oxide varistor (3) with a discharge gap. An electrode (2) is fixed and arranged between each group of metal oxides (1) and the metal oxide varistor (3) with the discharge gap, and the discharge gap (4) is arranged between each two groups of electrodes, thus forming a building block combination over-voltage protector.

Description

The building blocks combination overvoltage protector

Technical field:

The utility model discloses a kind of building blocks combination overvoltage protector, belong to the electric equipment products technical field, especially the overvoltage protection device that is used with electromechanical equipments protections such as transformer ' s type, power distribution cabinet, motors.

Background technology:

Overvoltage protection device is one of power industry product commonly used, is mainly used in the overvoltage protection of power equipment, prevents the insulation of overvoltage destruction electromechanical equipments such as atmosphere and operation.Existing overvoltage protection device, lightning arrester for example, it is to be connected a metal oxide arrester respectively between each phase line and ground, when lightning overvoltage surpassed certain value, the lightning arrester conducting constituted bleed-off circuit over the ground, protects power equipment not destroyed with this.Existing overvoltage protection device has following defective in practicality: this overvoltage protection device only can have protective effect to the overvoltage that thunder and lightning causes; and alternate switching overvoltage is not had defencive function; thereby the situation that normal appearance damages equipment because of alternate overvoltage in the production practices process, cause damage.

Summary of the invention:

The purpose of this utility model is the defective that exists in practicality at an existing overvoltage protection device and building blocks combination overvoltage protector is provided; this building blocks combination overvoltage protector contains three groups of phase lines and is connected the overvoltage protection device that has discharging gap separately with ground; at three alternate discharging gaps of three alternate connections, constituted the building blocks combination overvoltage protector again.The used discharging gap of the utility model is existing electric product.This building blocks combination overvoltage protector both had protective effect to the overvoltage that thunder and lightning (atmospheric over-voltage) causes, and also alternate switching overvoltage was had protective effect, and this protector is modular construction, was beneficial to installation and maintenance.Thereby realized complete overvoltage protection, the overvoltage of stopping to cause because of a variety of causes is damaged the electric equipment phenomenon.

Description of drawings:

The plan structure schematic diagram of Fig. 1, an embodiment of the utility model;

The main TV structure schematic diagram of Fig. 2, embodiment Fig. 1.

The electric principle schematic of Fig. 3, embodiment Fig. 1.

Specific embodiments

As Fig. 1, Fig. 2, shown in Figure 3; among the figure 1 is the metal oxide piezo-resistance; among the figure 3 is metal oxide piezo-resistances that string has discharging gap; after irritated resistance 1 of three groups of metal oxides and string being had metal oxide piezo-resistance 3 serial connections of discharging gap; be connected between each phase line and the ground, constitute existing three groups of overvoltage protection devices relatively.The utility model is to have between the metal oxide piezo-resistance 3 of discharging gap at metal oxide piezo-resistance 1 and string to be fixed with connection electrode 2; between per two groups connection electrode 2, be in series with discharging gap 4, make the building blocks combination overvoltage protector by lead.

The utility model is in practicality, and it is connected in metal oxide piezo-resistance 1, the connection electrode 2 between phase line and the ground and goes here and there the metal oxide piezo-resistance 3 of discharging gap, can protect the atmospheric over-voltage that thunder and lightning causes; The discharging gap 4 that is connected between phase line can play a protective role to the switching overvoltage between phase line, thereby has realized the purpose of this utility model.

Claims

A kind of building blocks combination overvoltage protector; it contains three groups of metal oxide piezo-resistances (1); three groups of strings have the metal oxide piezo-resistance (3) of discharging gap to be serially connected; it is characterized in that: in the three groups of metal oxide piezo-resistances (1) that connect with go here and there to have between the metal oxide piezo-resistance (3) of discharging gap and be fixed with connection electrode (2); between every two arrays of electrodes (2), be connected with discharging gap (4), make the building blocks combination overvoltage protector.