CN206312841U - A kind of band phase-defect protection circuit breaker - Google Patents

Abstract

The utility model relates to a circuit breaker with phase loss protection, comprising a base, a face cover, a test resistor, a leakage release, an opening and closing assembly, a mounting frame, a tripping linkage mechanism, and a zero-sequence current transformer. There is a phase loss protection circuit module; the opening and closing components are set on the phase loss protection circuit module, the opening and closing components are provided with operating handles, and an arc-shaped information display board is installed on the operating handles; the trip linkage mechanism is installed on the phase loss protection circuit module. In the protection circuit module and connected with the opening and closing components; the leakage release is installed on the base through the mounting bracket and connected with the trip linkage mechanism and electrically connected with the phase loss protection circuit module; zero-sequence current transformer, test resistor Installed in the base; the cover is placed on the base, the operating handle extends out of the cover, and the arc-shaped information display board is embedded in the arc-shaped groove provided on the cover. The utility model has the characteristics of convenient installation, high production efficiency, intuitive display of the state in the circuit breaker, convenient use, and no misunderstanding for users.

Description

A circuit breaker with phase loss protection

technical field

The utility model relates to the technical field of electrical protection equipment, in particular to a circuit breaker with phase loss protection.

Background technique

A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. With the development of science and technology, there are more and more functions of circuit breakers on the market, but the core components in the circuit breaker are basically unchanged, mostly consisting of base, cover, leakage release, opening and closing components, tripping linkage , zero-sequence current transformer, and protection circuit modules; however, most of the leakage releases in existing circuit breakers are installed on the base by screws. Such an assembly structure takes time and the assembly efficiency is low; There is no information display panel on the operating handle of the component, so that the user cannot intuitively know the status of the circuit breaker, which is prone to misunderstanding.

Utility model content

The purpose of the utility model is to provide a circuit breaker with phase loss protection, the circuit breaker has the advantages of simple structure, reasonable design, convenient installation, high production efficiency, intuitive display of the state in the circuit breaker, convenient use, and will not make users feel uncomfortable. advantages such as misunderstanding.

The technical scheme of the utility model is achieved in the following way: a circuit breaker with phase loss protection, which is characterized in that it includes a base, a cover, a test resistor, a leakage release, an opening and closing assembly, a mounting frame, and a tripping linkage mechanism . Zero-sequence current transformer, wherein the base is provided with a phase loss protection circuit module, the phase loss protection circuit module includes three protection circuits, and one end of each protection circuit is provided with a moving contact rod, and the moving contact rod There is a moving contact on the end of each protection circuit, and a bimetallic sheet is provided on the other end of each protection circuit; the opening and closing components are arranged on the open-phase protection circuit module, and an operating handle is provided on the opening and closing components. The front and rear sides of the operating handle are respectively provided with an arc-shaped information display board integrally formed with the operating handle; the tripping linkage mechanism is installed in the phase loss protection circuit module, and the tripping linkage mechanism is connected with the opening and closing components; The earth leakage tripper is installed on the mounting frame, the mounting plate is provided with an inserting plate, the side of the inserting plate is provided with a shrapnel, the base is provided with an inserting groove, and the mounting frame The insertion board is inserted in the insertion slot, the hook provided by the leakage release is hooked on the trip linkage mechanism, and the leakage release is electrically connected with the phase loss protection circuit module; The zero-sequence current transformer is installed in the base, and the zero-sequence current transformer is provided with through holes; one side of the base is provided with three live wire power supply terminals and one neutral wire power supply terminal. The terminals are respectively provided with static contacts, the static contacts are located below the movable contacts, and an arc extinguishing assembly is provided between the static contacts and the movable contacts; the other side of the base is correspondingly provided with There are three live wire load connection ends and one neutral wire load connection end, the live wire load connection end is electrically connected to the protection circuit, and the connection wire between the live wire load connection end and the protection circuit passes through the zero-sequence current transformer. hole setting, the neutral line load connection end and the neutral line power supply terminal are electrically connected through the electric wire passing through the through hole on the zero sequence current transformer; the live line power supply terminal, the neutral line power supply terminal, the live line The load connection end and the zero line load connection end are respectively composed of a metal plate and a nut locked on the metal plate; the test resistor is installed in the base located in front of the leakage release, and the test resistor is provided with an upper connection end, a lower Connecting end, the lower connecting end is electrically connected with the neutral line load connecting end, leakage release, and zero sequence current transformer, and the upper connecting end is electrically connected with the neutral line load connecting end through a wire. A metal sheet is also installed, one end of the metal sheet is electrically connected to the phase loss protection circuit module, and a resistor is connected in series between the metal sheet and the phase loss protection circuit module, and the other end of the metal sheet is arranged above the upper connection end ; The surface cover is provided with an arc groove, and an operation hole is arranged in the arc groove. The surface cover is placed on the base, and the operation handle extends out of the surface cover through the operation hole. The display panel is embedded in the arc-shaped groove; four vertical mounting holes are provided on both sides of the cover, and a test button is also provided on the cover. The test button has a pressing piece, a pin shaft, a return spring and The clamp spring is formed, and the position of the pin shaft corresponds to the position of the upper connection end of the test resistor.

Beneficial technical effects of the utility model: (1) The utility model adopts a mounting frame and is provided with an insertion plate with a tightly pressed shrapnel on the mounting frame, and an insertion slot is provided on the base, so that leakage When the release is installed, it only needs to be connected with the installation frame and then it can be installed on the base by inserting the insertion plate into the insertion slot. The design of the compression shrapnel on the insertion plate also makes the The leakage release will not loosen and has good reliability, so that the utility model has the advantages of simple structure, reasonable design, convenient installation and high production efficiency.

(2) The utility model is equipped with an integrally formed arc-shaped information display board on both sides of the operating handle, and through the design of the arc-shaped information display board, after pushing the operating handle, the utility model will be turned on at this time. The status of the utility model is displayed, and the three-dimensional sense of the information is stronger when the arc is designed, so that the utility model has the advantages of intuitive display of the status, convenient use, and no misunderstanding for the user.

(3) The utility model also provides phase loss protection for the circuit by providing a phase loss protection circuit module in the base, so that the utility model has the advantage of phase loss protection.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the utility model in the front view direction.

Fig. 3 is a structural schematic diagram of the utility model after the face cover is disassembled.

Fig. 4 is a schematic diagram of the connection structure between the leakage release of the present invention and the installation frame.

Fig. 5 is a structural schematic diagram of the face cover of the present invention.

detailed description

As shown in Figure 1, Figure 2, Figure 3, Figure 4, and Figure 5, a circuit breaker with phase loss protection described in the utility model includes a base 1, a cover 2, a test resistor 3, and a leakage release 4 , opening and closing assembly 5, mounting frame 6, trip linkage mechanism 7, zero-sequence current transformer 8, wherein the base 1 is provided with a phase loss protection circuit module, and the phase loss protection circuit module includes three protection circuits , which is often referred to as a three-phase circuit, a moving contact bar 11 is provided at one end of each protection circuit, and a moving contact is provided on the end of the moving contact bar 11, and a moving contact is provided at the other end of each protection circuit. Bimetal sheet 12; the opening and closing assembly 5 is arranged on the phase loss protection circuit module, and an operating handle 51 is provided on the opening and closing assembly 5, and an operating handle 51 integrated with the operating handle 51 is respectively provided on the front and rear sides of the operating handle 51. The formed curved information display board 52, through the design of the curved information display board 52, will display the state of the utility model at this time after the operating handle 51 is pushed, and the three-dimensional sense of information is stronger during the curved design , so that the utility model has the advantages of visually displaying the state, being convenient to use, and not misleading the user; the tripping linkage mechanism 7 is installed in the phase loss protection circuit module. 5 connection; through the design of bimetal strip 12 on each protection circuit, when the utility model suddenly loses phase during operation, the current of the other two phases will increase sharply, greatly exceeding the breaking current of the utility model, so that the double The metal sheet 12 is heated and deformed, and the deformation of the bimetal sheet 12 pushes the trip linkage mechanism 7 to trip the opening and closing assembly 5, causing the moving contact rod 11 to be bounced, so that the utility model has the function of phase loss protection.

As shown in Fig. 3 and Fig. 4, the leakage release 4 is installed on the installation frame 6, an insertion plate 61 is provided on the installation frame 6, and a compression shrapnel 62 is provided on the side of the insertion plate 61, The base 1 is provided with an insertion slot, and the insertion plate 61 of the installation frame 6 is inserted in the insertion slot. Through such a design, the leakage release 4 passes through the insertion plate when it is installed. 61 is provided with the design of pressing shrapnel 62 so that the leakage release 4 will not loosen after installation, and the reliability is good, so that the utility model has the advantages of simple structure, reasonable design, convenient installation and high production efficiency. In addition, the hook member 41 provided on the leakage release 4 is hooked on the trip linkage mechanism 7, and the leakage release 4 is electrically connected to the phase loss protection circuit module, specifically, the leakage release The device 4 can be electrically connected with any protection circuit. Through such a design, when the utility model leaks electricity during use, the hook 41 of the leakage release 4 pushes the tripping linkage mechanism 7 to open and close the switch. The assembly 5 trips, so that the moving contact bar 11 is bounced, so that the utility model has the function of leakage protection.

In order to make the structure of the utility model more reasonable, as shown in Figure 2 and Figure 3, the zero-sequence current transformer 8 is installed in the base 1, and the zero-sequence current transformer 8 is provided with a through hole; One side of the seat 1 is provided with three live wire power supply terminals 13 and one neutral line power supply terminal 14, and the live wire power supply terminals 13 are respectively provided with static contacts, and the static contacts are located below the movable contacts. And an arc extinguishing assembly 9 is provided between the static contact and the movable contact; the other side of the base 1 is correspondingly provided with three live wire load connection ends 15 and a neutral wire load connection end 16, the live wire load The connection end 15 is electrically connected to the protection circuit, and the connecting wire between the live wire load connection end 15 and the protection circuit is set through the through hole on the zero-sequence current transformer 8, and the neutral line load connection end 16 is connected to the neutral line The power supply terminal 14 is electrically connected by the electric wire that passes through the through hole on the zero-sequence current transformer 8; in order to make the utility model connect more conveniently during application, the power supply terminal 13 of the live wire, the power supply terminal of the zero line 14. The live wire load connection end 15 and the neutral wire load connection end 16 are respectively composed of a metal plate and a nut locked on the metal plate.

As shown in Figure 3, the test resistance 3 is installed in the base located in front of the leakage release 4, and the test resistance 3 is provided with an upper connection end 31 and a lower connection end, and the lower connection end is connected to the zero line load Terminal 16, leakage release 4, and zero-sequence current transformer 8 are electrically connected, and the upper connection terminal 31 is electrically connected to the zero line load connection terminal 16 through a wire, and a metal sheet 32 is also installed on the test resistor 3, One end of the metal sheet 32 is electrically connected with the phase loss protection circuit module. Specifically, the metal sheet 32 is electrically connected with a protection circuit in the phase loss protection circuit module. There is also a resistor in series between them, and the other end of the metal sheet 32 is set above the upper connection end 31 . By setting the design of the test resistor 3, the user can use the test resistor 3 to test whether the utility model is damaged at regular intervals during use, which is conducive to improving the safety of electricity use.

As shown in Fig. 1 and Fig. 5, an arc-shaped groove 21 is provided on the described face cover 2, and an operating hole 22 is arranged in the arc-shaped groove 21. The face cover 2 is placed on the base 1, and the operating handle 51 protrudes out of the surface cover 2 through the operation hole 22, and the arc-shaped information display board 52 is embedded in the arc-shaped groove 21; four vertical mounting holes 23 are respectively provided on both sides of the surface cover 2. , the tool passes through the mounting hole 23 to lock the nut on the metal plate, and the test button 10 is also provided on the cover 2. The test button 10 is composed of a pressing piece, a pin shaft, a return spring and a snap ring. The position of the shaft corresponds to the position of the upper connection end 31 of the test resistor 3, so that during the test, pressing the pressing piece 10 to push the pin shaft makes the metal sheet 32 and the upper connection end 31 of the test resistor 3 realize connection, so that artificial A leakage current, thereby testing out whether the utility model is intact.

Claims (1)

1. a kind of with phase-defect protection circuit breaker, it is characterised in that：Including pedestal（1）, cover（2）, test resistance（3）, electric leakage it is de- Button device（4）, division gate assembly（5）, mounting bracket（6）, dropout link gear（7）, zero sequence current mutual inductor（8）,

Wherein described pedestal（1）Open-phase protection circuit module is inside provided with, the open-phase protection circuit module includes three protection electricity Road, movable feeler lever is provided with one end of each protection circuit（11）, the movable feeler lever（11）End be provided with movable contact, in each protection The other end of circuit is respectively equipped with bimetal leaf（12）；

The division gate assembly（5）It is arranged in open-phase protection circuit module, in division gate assembly（5）It is provided with operation handle （51）, in operation handle（51）Before and after be respectively provided on two sides with and operation handle（51）Integrally formed arc message panel （52）；

The dropout link gear（7）In open-phase protection circuit module, the dropout link gear（7）With division gate assembly （5）Connection；

The leakage tripping device（4）Installed in mounting bracket（6）On, in mounting bracket（6）It is provided with inserting plate（61）, in inserting plate （61）Side be provided with and press shell fragment（62）, the pedestal（1）It is provided with inserting groove, the mounting bracket（6）Inserting plate （61）It is inserted into inserting groove, the leakage tripping device（4）The buckling piece being provided with（41）Hook is put in dropout link gear（7）On, And the leakage tripping device（4）It is electrically connected with open-phase protection circuit module；

The zero sequence current mutual inductor（8）Installed in pedestal（1）In, the zero sequence current mutual inductor（8）It is provided with through hole；

The pedestal（1）Wherein side be provided with three fire-wire power terminals（13）With a zero line supply terminals （14）, in fire-wire power terminals（13）On be respectively equipped with stationary contact, the stationary contact is located at the lower section of movable contact, and in stationary contact Arc extinguishing component is provided between movable contact（9）；

The pedestal（1）Opposite side be accordingly provided with three live wires load connection ends（15）With a zero line load connection end （16）, live wire load connection end（15）It is electrically connected with protection circuit, and live wire load connection end（15）With protection circuit it Between connecting wire be in through zero sequence current mutual inductor（8）On through hole set, the zero line loads connection end（16）With zero line Supply terminals（14）Between by through zero sequence current mutual inductor（8）On the electric wire of through hole be electrically connected；

The fire-wire power terminals（13）, zero line supply terminals（14）, live wire load connection end（15）, zero line load connection End（16）The nut by metallic plate with locking on a metal plate is constituted respectively；

The test resistance（3）It is mounted on leakage tripping device（4）In the pedestal in front, in test resistance（3）The company of being provided with Connect end（31）, lower connection end, the lower connection end and zero line load connection end（16）, leakage tripping device（4）, zero sequence current mutual inductance Device（8）It is electrically connected, the upper connection end（31）Connection end is loaded by electric wire and zero line（16）It is electrically connected, in test resistance （3）On be also equipped with a sheet metal（32）, the sheet metal（32）One end be electrically connected with open-phase protection circuit module, in metal Piece（32）A resistance, the sheet metal are also in series between open-phase protection circuit module（32）The other end be arranged on connection End（31）Top；

The cover（2）It is provided with deep-slotted chip breaker（21）, in deep-slotted chip breaker（21）In be provided with handle hole（22）, the cover（2）Lid is put Pedestal（1）On, the operation handle（51）Through handle hole（22）Stretch out cover（2）Outward, the arc message panel（52） It is inlaid in deep-slotted chip breaker（21）In；In cover（2）Be respectively provided on two sides with four vertical mounting holes（23）, in cover（2）It is upper to go back It is provided with test button（10）, the test button（10）There are pressing piece, bearing pin, back-moving spring and jump ring to constitute, the position of the bearing pin Put and test resistance（3）Upper connection end（31）Position it is corresponding.