CN207852475U - A kind of safety ground capacitor - Google Patents

Abstract

The utility model discloses a kind of safety ground capacitors, including shell, fuse, lead-out wire, bus, fuse encapsulates inside the housing, lead-out wire is arranged above the shell cover of shell, including the first capacitance lead-out wire, the second capacitance lead-out wire and ground outlet, bus connects each fuse in core group, further includes fuse and insulating sleeve, insulating sleeve is sleeved on outside fuse；Fuse is serially connected between ground outlet and bus.The ground capacitor of the ground capacitor of the utility model fuse that has been built-in, fuse connect one end and the capacitor body of ground outlet；Occur high current before open circuit, when high current passes through capacitor, capacitor-embedded blown fuse so that open circuit avoids safety accident.

Description

A kind of safety ground capacitor

Technical field

The utility model is related to a kind of ground capacitors.

Background technology

In the input terminal of AC power, access capacitance is generally required to inhibit EMI Conduction Interferences.Between firewire and ground wire And between zero curve and ground wire and the capacitance that connects, commonly referred to collectively as Y capacitance.The position of the two Y capacitances connection is more crucial, Relevant safety standard is had to comply with, to prevent causing electronic equipment to leak electricity or casing electrification.

The effect of usually used ground capacitor is exactly to inhibit EMI Conduction Interferences, and ground capacitor should avoid between polar region Short circuit, if but high current occur before open circuit in failure, ground capacitor is helpless.

The usual conveyance capacity of ground capacitor all very littles, pass through the electric current on ground capacitor when circuit abnormality in order to prevent Excessive, it is that the silk that insures is concatenated before the ground terminal of capacitor that the damage of bigger, existing way are caused to circuit（Fusible link）, make Ground terminal when occurring more than the electric current of limit, blown fuse, circuit is opened a way immediately, avoid may caused by safe thing Therefore.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of safe ground capacitors.

Realize that the technical solution of the utility model aim is a kind of safe ground capacitor, including shell, fuse, extraction Line, fuse encapsulate inside the housing, and lead-out wire is arranged above the shell cover of shell, including the first capacitance lead-out wire, the second capacitance Lead-out wire and ground outlet；Further include fuse, bus and insulating sleeve, fuse, bus and insulation Casing encapsulates inside the housing, and insulating sleeve is sleeved on outside fuse；Bus connects the lower end metal spraying face of each fuse, Fuse is serially connected between ground outlet and bus.

The length of insulating sleeve is identical as the length of fuse.

There are two fuses, is placed in parallel in the same plane, and insulation board is arranged between two fuses and is isolated.

The utility model has the effect of positive：The ground connection electricity of the ground capacitor of the utility model fuse that has been built-in Container, fuse connect one end and the capacitor body of ground outlet；Occurs high current before open circuit, high current passes through capacitance When device, capacitor-embedded blown fuse so that open circuit avoids safety accident.The utility model is integrated with insurance The capacitor of silk is easy to install and use, without separately connecing fuse in circuit.

Description of the drawings

Fig. 1 is the internal structure schematic diagram of the safety ground capacitor of the utility model；

Fig. 2 is the vertical view of Fig. 1；

Fig. 3 is the external structure schematic diagram of the safety ground capacitor of the utility model；

Label in above-mentioned attached drawing is as follows：Shell 1, fuse 2, insulation board 21, lead-out wire 3, the first capacitance lead-out wire 31, the Two capacitance lead-out wires 32, ground outlet 33, fuse 4, bus 5, insulating sleeve 6.

Specific implementation mode

（Embodiment 1）

See Fig. 1 to Fig. 3, the safety ground capacitor of the present embodiment includes shell 1, fuse 2, lead-out wire 3, fuse 4, public affairs Connecting line 5 and insulating sleeve 6 altogether.Fuse 2, fuse 4, bus 5 and insulating sleeve 6 are located inside shell 1.

Fuse 2 is located inside shell 1, two or more fuses 2 form core group, and each fuse 2 is placed in parallel same In plane.Two fuses 2 form core group in the present embodiment, and setting insulation board 21 is isolated between two fuses 2.Fuse 2 and shell 1 Between gap filled by encapsulating compound.

Lead-out wire 3 is arranged above the shell cover of shell 1, including the first capacitance lead-out wire 31,32 and of the second capacitance lead-out wire Ground outlet 33.For accessing circuit, ground outlet 33 is used for for first capacitance lead-out wire 31 and the second capacitance lead-out wire 32 Ground connection.

Fuse 4 is arranged between ground outlet 33 and bus 5.The both ends of bus 5 respectively with core The lower metal spraying face connection of son 2.The outside of fuse 4 is also set with insulating sleeve 6, ensures to insulate between fuse 4 and fuse.Insulation The length of casing 6 is identical as the length of fuse 4.

The ground capacitor of the ground capacitor of the utility model fuse 4 that has been built-in, the connection ground connection of fuse 4 are drawn One end of line 33 and capacitor body 2；Occur high current before open circuit, when high current passes through capacitor, capacitor-embedded guarantor Dangerous silk 4 fuses so that open circuit avoids safety accident.The capacitor for being integrated with fuse of the utility model is installed and used It is convenient, without separately connecing fuse in circuit.

Claims (3)

1. a kind of safety ground capacitor, including shell（1）, fuse（2）, lead-out wire（3）, fuse（2）It is encapsulated in shell（1）It is interior Portion, lead-out wire（3）It is arranged in shell（1）Shell cover above, including the first capacitance lead-out wire（31）, the second capacitance lead-out wire （32）, it is characterised in that：It further include fuse（4）, bus（5）And insulating sleeve（6）, fuse（4）, it is commonly connected Line（5）And insulating sleeve（6）It is encapsulated in shell（1）Inside, insulating sleeve（6）It is sleeved on fuse（4）It is external；Bus （5）Connect each fuse（2）Lower end metal spraying face；Lead-out wire（3）It further include ground outlet（33）, fuse（4）It is serially connected in and connects Ground lead-out wire（33）And bus（5）Between.

2. safety ground capacitor according to claim 1, it is characterised in that：Insulating sleeve（6）Length and fuse （4）Length it is identical.

3. safety ground capacitor according to claim 1, it is characterised in that：Fuse（2）There are two, it is placed in parallel same In one plane, two fuses（2）Between insulation board is set（21）Isolation.