CN214477260U - Automatic reclosing miniature circuit breaker - Google Patents

Abstract

The utility model relates to an automatic reclosing small-sized breaker, which comprises a breaker breaking unit and an automatic reclosing device assembled with the breaker unit, wherein the breaker unit comprises an N-line switch module, an L-line switch module and an electric leakage protection metering module, the electric leakage protection metering module comprises a shell and an electric leakage protection metering component arranged in the shell, the leakage protection metering component comprises a leakage protection circuit board, two manganese copper steel conductive tubes, a zero sequence transformer sleeved on the two manganese copper steel conductive tubes, two connecting terminals, and two conducting strips respectively connected between the two connecting terminals and the two manganese copper steel conductive tubes, one end of each of the two manganese copper steel conductive tubes is respectively and electrically connected with the N-line switch module and the L-line switch module, and a conducting wire is respectively connected between the two ends of the manganese copper steel conducting tube and the electric leakage protection circuit. The utility model has the advantages of simple structure, stable and reliable performance, small volume, convenient assembly and low cost.

Description

Automatic reclosing miniature circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to automatic reclosing lock miniature circuit breaker.

Background

At present, small circuit breakers are widely used in low-voltage distribution networks, mainly in various places such as industrial, commercial, high-rise and residential houses, and can perform overcurrent protection and leakage protection on electric devices such as motors, distribution lines and lighting circuits. The traditional small circuit breaker needs manual operation to complete the opening and closing actions. With the development of intelligent power grids in China, on the premise of requiring safe operation of the power grids, the realization of intellectualization of control of electric appliances is more and more urgent. In order to cope with new situation changes, the existing miniature circuit breaker should be provided with an automatic reclosing function. The electric operating mechanism of the miniature circuit breaker is an accessory used for a remote electric opening and closing circuit breaker, is directly matched with a prepayment electric energy meter for use, and can realize reclosing after payment. The existing miniature circuit breaker capable of automatically reclosing is unreasonable in structural design, complex in assembly, low in production efficiency and high in cost, and cannot be assembled in a modularized mode, so that the miniature circuit breaker capable of automatically reclosing has the defects of complex structure, large size, unreliable performance, inconvenience in assembly and high cost.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, stable performance are reliable, small, the assembly is convenient, with low costs miniature circuit breaker of automatic reclosing.

In order to achieve the above object, the utility model discloses an automatic reclosing lock miniature circuit breaker, including circuit breaker disconnected unit, the automatic reclosing lock device of assembling mutually with circuit breaker unit, circuit breaker unit including set up N line switch module on automatic reclosing lock device one side, set up L line switch module on N line switch module one side, set up the earth leakage protection metering module on N line switch module and L line switch module one side, earth leakage protection metering module include the casing, set up the earth leakage protection metering assembly in the casing, the earth leakage protection metering assembly include earth leakage protection circuit board, two manganese copper steel conductive tubes, suit zero sequence transformer on two manganese copper steel conductive tubes, two binding post, two conducting strips of connecting respectively between two binding post and two manganese copper steel conductive tubes, the one end of two manganese copper steel conductive tubes respectively with N line switch module, The L-line switch module is electrically connected, and a lead is respectively connected between the two ends of the manganese-copper steel conductive tube and the electric leakage protection circuit.

The beneficial effect of above-mentioned structure is: this automatic reclosing miniature circuit breaker adopts modular structure design, and the circuit breaker unit comprises N line switch module, L line switch module, earth leakage protection module, can be according to user's demand, and the assembly of flexible combination of going certainly, and earth leakage protection module clamps on N line switch module, L line switch module, and the assembly is more convenient, is favorable to improving production efficiency, and can realize this automatic reclosing miniature circuit breaker's earth leakage protection, the function of measurement. And the leakage protection module adopts the manganese copper steel conductive tube to measure the current, so that the purpose of metering is realized, the structural design is simple, and the production cost is lower. Therefore, the automatic reclosing miniature circuit breaker has the advantages of simple structure, stable and reliable performance, small volume, convenience and quickness in assembly and low cost.

Particularly, the two ends of the manganin steel conductive tube are respectively provided with a first wiring nose and a second wiring nose, one ends of the two leads are respectively connected to the first wiring nose and the second wiring nose, and the other ends of the two leads are provided with contact pins which are inserted on the leakage protection circuit board. The manganin steel conductive tube is respectively electrically connected with the leakage protection circuit board through the first wiring nose, the second wiring nose, the two leads and the contact pin, so that the assembly is more convenient, and the electric connection reliability of the leakage protection leakage is improved.

Particularly, two screws are respectively arranged in the two manganin steel conductive tubes, and the two screws respectively sequentially penetrate through the conductive sheet, the second wiring lug, the manganin steel conductive tube and the first wiring lug and are respectively connected to the N-line switch module and the L-line switch module. The automatic reclosing miniature circuit breaker is connected to the N-line switch module and the L-line switch module in a transverse penetrating mode through screws, and therefore assembly efficiency of the automatic reclosing miniature circuit breaker is improved.

Particularly, the two wiring terminals are respectively provided with a power taking piece, one end of each power taking piece is provided with a plug pin, the plug pin is plugged on the leakage protection circuit board, and one end of each power taking piece is inserted into the wiring terminal and forms electric connection between the power taking piece and the wiring terminal. The power taking pieces are arranged on the two wiring terminals respectively, the power taking pieces can collect voltage signals of the wiring terminals onto the leakage protection circuit board, so that the voltage implementation monitoring function of the automatic reclosing miniature circuit breaker is achieved, the power taking pieces are connected with the leakage protection circuit board in a plugging mode, and the assembly is more convenient.

Particularly, the zero sequence transformer comprises a transformer shell and a coil arranged in the transformer, two through holes for two manganese copper steel conductive tubes to pass through are respectively arranged on the transformer shell, and a partition plate is arranged on the transformer shell corresponding to the position between the two conductive plates. Be provided with the baffle between two conducting strips, the baffle can play insulating, isolation, can increase the creepage distance between two conducting strips, is favorable to improving this automatic reclosing miniature circuit breaker's security performance.

Particularly, the mutual inductor shell on correspond second connection lug department and be provided with the draw-in groove, the one end block of second connection lug in the draw-in groove, and constitute the joint cooperation of second connection lug and mutual inductor casing. The second connection lug is matched with the mutual inductor shell in a clamping mode, so that the second connection lug is convenient to assemble with the mutual inductor shell, the second connection lug cannot rotate randomly, and the second connection lug can be connected with the mutual inductor shell more compactly.

Particularly, the mutual inductor shell is provided with a limiting groove corresponding to the two conducting strips, and the two conducting strips are clamped in the corresponding limiting grooves respectively and form the limiting matching of the mutual inductor shell and the two conducting strips. The conducting strip and the mutual inductor shell are in limit fit, so that the electric leakage protection metering assembly is convenient to assemble, and the assembly efficiency of the automatic reclosing miniature circuit breaker is improved.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an internal structure diagram of the embodiment of the present invention.

Fig. 3 is an internal front view of the earth leakage protection metering module according to the embodiment of the present invention.

Fig. 4 is a perspective view of the earth leakage protection measuring assembly according to the embodiment of the present invention.

Fig. 5 is an exploded view of the earth leakage protection metering device according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1 to 5, an embodiment of the present invention is an automatic reclosing miniature circuit breaker, including a breaker breaking unit 10 and an automatic reclosing device 11 assembled with the breaker breaking unit 10, wherein the breaker breaking unit 10 includes an N-line switch module 12 disposed on one side of the automatic reclosing device 11, an L-line switch module 13 disposed on one side of the N-line switch module 12, and an earth leakage protection metering module 20 disposed on one side of the N-line switch module 12 and the L-line switch module 13, the earth leakage protection metering module 20 includes a housing 21 and an earth leakage protection metering assembly 22 disposed in the housing 21, the earth leakage protection metering assembly 22 includes an earth leakage protection circuit board 221, two manganin steel conductive tubes 222, a zero sequence transformer 223 mounted on the two manganin steel conductive tubes 222, two connection terminals 224, and two connection terminals 225 respectively connected between the two connection terminals 224 and the two manganin steel conductive tubes 222, one end of each of the two manganese copper steel conductive tubes 222 is electrically connected with the N-line switch module 12 and the L-line switch module 13, and a conducting wire 226 is connected between each of the two ends of each of the manganese copper steel conductive tubes 222 and the leakage protection circuit 221. And the shell 21 is assembled with the N-line switch module and the shell 121 of the L-line switch module in a buckling connection mode, so that the assembly efficiency is higher due to the assembly of the electric leakage protection metering module with the N-line switch module and the L-line switch module. The two ends of the manganin steel conductive tube 222 are respectively provided with a first connection lug 227 and a second connection lug 228, one end of each of the two wires 226 is respectively connected to the first connection lug 227 and the second connection lug 228, and the other end of each of the two wires 226 is provided with a pin 229, and the pin 229 is inserted into the earth leakage protection circuit board 221. The manganin steel conductive tube is respectively electrically connected with the leakage protection circuit board through the first wiring nose, the second wiring nose, the two leads and the contact pin, so that the assembly is more convenient, and the electric connection reliability of the leakage protection leakage is improved. Two screws 230 are respectively arranged in the two manganese copper steel conductive tubes 222, and the two screws 230 respectively penetrate through the conductive sheet 225, the second wiring lug 228, the manganese copper steel conductive tube 222 and the first wiring lug 227 in sequence and are respectively connected to the N-line switch module 12 and the L-line switch module 12. The automatic reclosing miniature circuit breaker is connected to the N-line switch module and the L-line switch module in a transverse penetrating mode through screws, and therefore assembly efficiency of the automatic reclosing miniature circuit breaker is improved.

As shown in fig. 2, two terminals 224 are respectively provided with one power taking piece 30 therein, one end of the power taking piece 30 is provided with a plug pin 301, the plug pin 301 is plugged on the leakage protection circuit board 221, and one end of the power taking piece 30 is inserted into the terminal 224 to form an electrical connection between the power taking piece 30 and the terminal 224. The power taking pieces are arranged on the two wiring terminals respectively, the power taking pieces can collect voltage signals of the wiring terminals onto the leakage protection circuit board, so that the voltage implementation monitoring function of the automatic reclosing miniature circuit breaker is achieved, the power taking pieces are connected with the leakage protection circuit board in a plugging mode, and the assembly is more convenient.

As shown in fig. 3, 4, and 5, the zero sequence transformer 223 includes a transformer housing 2331 and a coil disposed in the transformer, two through holes 2232 through which the two manganese copper steel conductive tubes 222 can pass are respectively disposed on the transformer housing 2231, and a partition 2233 is disposed on the transformer housing 2231 corresponding to a position between the two conductive strips 225. Be provided with the baffle between two conducting strips, the baffle can play insulating, isolation, can increase the creepage distance between two conducting strips, is favorable to improving this automatic reclosing miniature circuit breaker's security performance. A clamping groove 2234 is formed in the transformer housing 2231 corresponding to the second wire connecting lug 228, one end of the second wire connecting lug 228 is clamped in the clamping groove 2234, and the second wire connecting lug 228 is clamped and matched with the transformer housing 2231. The second connection lug is matched with the mutual inductor shell in a clamping mode, so that the second connection lug is convenient to assemble with the mutual inductor shell, the second connection lug cannot rotate randomly, and the second connection lug can be connected with the mutual inductor shell more compactly. Particularly, the mutual inductor housing 2231 is provided with a limiting groove 2235 at a position corresponding to the two conducting strips 225, and the two conducting strips 225 are respectively clamped in the corresponding limiting groove 2235, and form a limiting fit between the mutual inductor housing 2231 and the two conducting strips 225. The conducting strip and the mutual inductor shell are in limit fit, so that the electric leakage protection metering assembly is convenient to assemble, and the assembly efficiency of the automatic reclosing miniature circuit breaker is improved.

This automatic reclosing miniature circuit breaker adopts modular structure design, and the circuit breaker unit comprises N line switch module, L line switch module, earth leakage protection module, can be according to user's demand, and the assembly of flexible combination of going certainly, and earth leakage protection module clamps on N line switch module, L line switch module, and the assembly is more convenient, is favorable to improving production efficiency, and can realize this automatic reclosing miniature circuit breaker's earth leakage protection, the function of measurement. And the leakage protection module adopts the manganese copper steel conductive tube to measure the current, so that the purpose of metering is realized, the structural design is simple, and the production cost is lower. Therefore, the automatic reclosing miniature circuit breaker has the advantages of simple structure, stable and reliable performance, small volume, convenience and quickness in assembly and low cost.

Claims (7)

1. The utility model provides an automatic reclosing miniature circuit breaker, includes circuit breaker disconnected unit, the automatic reclosing device of assembling mutually with circuit breaker unit, its characterized in that: the circuit breaker unit comprises an N-line switch module arranged on one side of the automatic reclosing device, an L-line switch module arranged on one side of the N-line switch module, and an electric leakage protection metering module arranged on one sides of the N-line switch module and the L-line switch module, the leakage protection metering module comprises a shell and a leakage protection metering component arranged in the shell, the leakage protection metering component comprises a leakage protection circuit board, two manganese copper steel conductive tubes, a zero sequence transformer sleeved on the two manganese copper steel conductive tubes, two connecting terminals, and two conducting strips respectively connected between the two connecting terminals and the two manganese copper steel conductive tubes, one end of each of the two manganese copper steel conductive tubes is respectively and electrically connected with the N-line switch module and the L-line switch module, and a conducting wire is respectively connected between the two ends of the manganese copper steel conducting tube and the electric leakage protection circuit.

2. The recloser miniature circuit breaker according to claim 1, characterized in that: the two ends of the manganin steel conductive tube are respectively provided with a first wiring nose and a second wiring nose, one ends of the two leads are respectively connected to the first wiring nose and the second wiring nose, and the other ends of the two leads are provided with contact pins which are inserted on the leakage protection circuit board.

3. The recloser miniature circuit breaker according to claim 1 or 2, characterized in that: the two manganin steel conductive tubes are internally provided with two screws respectively, and the two screws respectively sequentially penetrate through the conductive sheet, the second wiring lug, the manganin steel conductive tube and the first wiring lug and are respectively connected to the N-line switch module and the L-line switch module.

4. The recloser miniature circuit breaker according to claim 1 or 2, characterized in that: the two wiring terminals are respectively internally provided with a power taking piece, one end of the power taking piece is provided with a plug pin which is plugged on the leakage protection circuit board, and one end of the power taking piece is inserted in the wiring terminals and forms electric connection between the power taking piece and the wiring terminals.

5. The recloser miniature circuit breaker according to claim 1 or 2, characterized in that: the zero sequence transformer comprises a transformer shell and a coil arranged in the transformer, wherein two through holes for two manganese copper steel conductive tubes to pass through are respectively formed in the transformer shell, and a partition plate is arranged between the two corresponding conductive plates on the transformer shell.

6. The recloser miniature circuit breaker according to claim 5, wherein: the mutual-inductor shell on correspond second connection lug department and be provided with the draw-in groove, the one end block of second connection lug in the draw-in groove, and constitute the joint cooperation of second connection lug and mutual-inductor casing.

7. The recloser miniature circuit breaker according to claim 5, wherein: the mutual inductor shell is provided with a limiting groove corresponding to the two conducting strips, and the two conducting strips are clamped in the corresponding limiting grooves respectively and form limiting matching of the mutual inductor shell and the two conducting strips.

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