CN208299423U - Minitype electrical leakage breaker - Google Patents
Minitype electrical leakage breaker Download PDFInfo
- Publication number
- CN208299423U CN208299423U CN201821066363.5U CN201821066363U CN208299423U CN 208299423 U CN208299423 U CN 208299423U CN 201821066363 U CN201821066363 U CN 201821066363U CN 208299423 U CN208299423 U CN 208299423U
- Authority
- CN
- China
- Prior art keywords
- rectifier diode
- circuit
- phase
- varistor
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a kind of Minitype electrical leakage breaker, including electric leakage wiring board；Electric leakage wiring board includes three-phase power input end, surge absorbing circuit, rectification circuit, tripping coil, secondary surge absorbing circuit, controllable silicon drive circuit, bleeder circuit, electric leakage signal processing circuit, electric leakage signal sample circuit and creepage mutual inductor CT；Advantage: (1) being connected controllable silicon drive circuit when there is electric leakage signal, the short-circuit bleeder circuit of meeting after conducting, to make the electric current for flowing through tripping coil increased dramatically, so that tripping coil band pneumatic operating mechanism be made to disconnect breaker.Have the advantages that functional reliability is high；(2) voltage endurance is strong, to improve the antisurge performance of entire circuit；In bleeder circuit, traditional single high-power resistance is decomposed into multiple resistance and is connected, the temperature rise of divider resistance is reduced, so that reducing wiring board fever influences the temperature rise of breaker.To improve the functional reliability and service performance of leakage circuit breakers comprehensively.
Description
Technical field
The utility model belongs to circuit breaker design technical field, and in particular to a kind of Minitype electrical leakage breaker.
Background technique
Leakage circuit breakers is widely used in the fields such as industry, business, residential houses, its working principle is that: when route occurs
When electric leakage, leakage circuit breakers can in defined very short time rapid disengagement failure power supply, thus protect the person and electrical equipment
Safety.With the development of low-voltage electrical apparatus, leakage circuit breakers is commonly used in low voltage distribution circuit, however, with
More and more common application, it is also just higher and higher to the performance requirement of leakage circuit breakers.Traditional leakage circuit breakers, mainly has
Following problems: unfailing performance is limited, and antisurge performance and voltage endurance are limited；Divide in addition, being used as using single high-power resistance
Piezoresistance, due to the temperature rise of divider resistance, wiring board, which generates heat, has certain influence to the temperature rise of breaker.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of Minitype electrical leakage breaker, can effectively solve
State problem.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of Minitype electrical leakage breaker, including is no less than two identical breakers (1), a leakage
Electric attachment (2)；Wherein, the creepage accessory includes test button (3), operating mechanism (4), electric leakage wiring board (5), creepage accessory
Shell (6) and connecting terminal (7)；
The connecting terminal (7) of the creepage accessory (2) is connect with the leading-out terminal of the breaker (1)；The electric leakage route
Plate (5) is assembled together with the operating mechanism (4), and then realizes the tripping coil (L1) and operation machine of electric leakage wiring board (5)
The linkage of structure (4)；The test button (3) is mounted on operating mechanism (4), and the test button (3) passes through operating mechanism (4)
Control electric leakage wiring board (5) generates simulation leakage current；
Wherein, the electric leakage wiring board (5) includes three-phase power input end, surge absorbing circuit, rectification circuit, trip line
Circle, secondary surge absorbing circuit, controllable silicon drive circuit, bleeder circuit, electric leakage signal processing circuit, electric leakage signal sample circuit
With creepage mutual inductor CT；The surge absorbing circuit and the rectification circuit are successively passed through in the output of the three-phase power input end
Afterwards, it is connected to the input terminal of the tripping coil；There are three output ends, respectively the 1st output end, the 2nd for the tripping coil tool
Output end and the 3rd output end；1st output end is connected to the electric leakage signal processing circuit after the bleeder circuit
Feeder ear；2nd output end is connected to the input terminal of the controllable silicon drive circuit；3rd output end is connected to institute
State secondary surge absorbing circuit；The output end of the creepage mutual inductor CT is connected to after the electric leakage signal sample circuit
The input terminal of the electric leakage signal processing circuit；The output end of the electric leakage signal processing circuit is connected to the silicon-controlled driving
The control terminal of circuit, for controlling the controllable silicon drive circuit on-off.
Preferably, the three-phase power input end has A phase output terminals, B phase output terminals, C phase output terminals and zero
Line N output terminal；The surge absorbing circuit includes the 1st varistor (RV1), the 2nd varistor (RV2), the 3rd varistor
(RV3) and the 4th varistor (RV4)；For A phase output terminals, B phase output terminals, C phase output terminals and zero curve N output end
Son, two varistors of connecting between any two output terminal, it may be assumed that connect between A phase output terminals and B phase output terminals
1st varistor (RV1) and the 2nd varistor (RV2)；The 1st pressure-sensitive electricity of series connection between A phase output terminals and C phase output terminals
Hinder (RV1) and the 3rd varistor (RV3)；The 1st varistor (RV1) of series connection between A phase output terminals and zero curve N output terminal
With the 4th varistor (RV4)；It connects between B phase output terminals and C phase output terminals the 2nd varistor (RV2) and the 3rd pressure-sensitive
Resistance (RV3)；The 2nd varistor (RV2) of series connection and the 4th varistor between B phase output terminals and zero curve N output terminal
(RV4)；The 3rd varistor (RV3) of series connection and the 4th varistor (RV4) between C phase output terminals and zero curve N output terminal.
Preferably, the rectification circuit includes the 1st rectifier diode (D1), the 2nd rectifier diode (D2), the 3rd rectification two
Pole pipe (D3), the 4th rectifier diode (D4), the 5th rectifier diode (D5), the 6th rectifier diode (D6), the 7th rectifier diode
(D7), the 8th rectifier diode (D8), the 9th rectifier diode (D9), the 10th rectifier diode (D10), the 11st rectifier diode
(D11), the 12nd rectifier diode (D12), the 13rd rectifier diode (D13), the 14th rectifier diode (D14), the 15th rectification two
Pole pipe (D15), the 16th rectifier diode (D16), the 17th rectifier diode (D17) and the 18th rectifier diode (D18)；
The surge absorbing circuit is with A phase exports, B phase exports, C phase exports and zero curve N output；The surge absoption electricity
The A phase on road, which exports, is divided into two branches, and a branch is connected to the anode of the 1st rectifier diode (D1), the 1st rectifier diode
(D1) cathode is connected to the anode of the 2nd rectifier diode (D2), and the cathode of the 2nd rectifier diode (D2) is connected to tripping coil
(L1) one end；Another branch is connected to the cathode of the 11st rectifier diode (D11), and the 11st rectifier diode (D11) is just
Pole is connected to the cathode of the 12nd rectifier diode (D12), the plus earth of the 12nd rectifier diode (D12)；
The B phase of the surge absorbing circuit, which exports, is divided into two branches, and a branch is connected to the 3rd rectifier diode (D3)
Anode, the cathode of the 3rd rectifier diode (D3) is connected to the anode of the 4th rectifier diode (D4), the 4th rectifier diode (D4)
Cathode be connected to one end of tripping coil (L1)；Another branch is connected to the cathode of the 13rd rectifier diode (D13), and the 13rd
The anode of rectifier diode (D13) is connected to the cathode of the 14th rectifier diode (D14), and the 14th rectifier diode (D14) is just
Pole ground connection；
The C phase of the surge absorbing circuit, which exports, is divided into two branches, and a branch is connected to the 5th rectifier diode (D5)
Anode, the cathode of the 5th rectifier diode (D5) is connected to the anode of the 6th rectifier diode (D6), the 6th rectifier diode (D6)
Cathode be connected to one end of tripping coil (L1)；Another branch is connected to the cathode of the 15th rectifier diode (D15), and the 15th
The anode of rectifier diode (D15) is connected to the cathode of the 16th rectifier diode (D16), and the 16th rectifier diode (D16) is just
Pole ground connection；
The zero curve N output of the surge absorbing circuit is divided into two branches, and a branch is connected to the 7th rectifier diode
(D7) cathode of anode, the 7th rectifier diode (D7) is connected to the anode of the 8th rectifier diode (D8), the 8th rectifier diode
(D8) cathode is connected to one end of tripping coil (L1)；Another branch is connected to the cathode of the 17th rectifier diode (D17),
The anode of 17th rectifier diode (D17) is connected to the cathode of the 18th rectifier diode (D18), the 18th rectifier diode (D18)
Plus earth.
Preferably, the secondary surge absorbing circuit is the 5th varistor (RV5).
Preferably, the controllable silicon drive circuit includes the 1st silicon-controlled (Q1), the 2nd silicon-controlled (Q2), the 13rd resistance
(R13), the 9th rectifier diode (D9), filter capacitor (C8)；
The other end of the tripping coil (L1) is connected to the anode of the described 1st silicon-controlled (Q1)；Described 1st is silicon-controlled
(Q1) cathode is connected to the anode of the described 2nd silicon-controlled (Q2)；The control electrode of 1st silicon-controlled (Q1) passes through the described 13rd
After resistance (R13) and the 9th rectifier diode (D9), it is connected to three phase mains；The cathode of 2nd silicon-controlled (Q2) connects
Ground；The control electrode of 2nd silicon-controlled (Q2) is connect with the output control terminal of the electric leakage signal processing circuit；The filtered electrical
Hold one end ground connection of (C8), the control electrode connection of the other end and the described 2nd silicon-controlled (Q2).
Preferably, the bleeder circuit includes multiple concatenated divider resistance units；Each divider resistance unit is by two
Divider resistance composition in parallel.
It preferably, further include leak(age) test circuit；The leak(age) test circuit includes switch and power supply (TS2), described to open
Pass is connect with the test button (3), by manipulating the test button (3), is switched on-off described in control；The power supply
(TS2) it by the switch, is connect with the input terminal of the surge absorbing circuit.
Minitype electrical leakage breaker provided by the utility model has the advantage that
The utility model has following design feature:
(1) the output end parallel connection bleeder circuit and controllable silicon drive circuit of tripping coil, the positive reason of controllable silicon drive circuit
No power under condition, is connected controllable silicon drive circuit when there is electric leakage signal, the short-circuit bleeder circuit of meeting after conducting, to make to flow through
The electric current of tripping coil increased dramatically, so that tripping coil band pneumatic operating mechanism be made to disconnect breaker.With functional reliability
High advantage；
(2) surge absorbing circuit of the design is connected two-by-two using varistor increases the voltage endurance of varistor；It is whole
Current circuit increases the voltage endurance of diode rectifier circuit using rectifier diode series connection；Controllable silicon drive circuit is using two strings
What is joined is silicon-controlled, to increase silicon-controlled voltage endurance, to improve the antisurge performance of entire circuit；In bleeder circuit,
Traditional single high-power resistance is decomposed into multiple resistance series connection, the temperature rise of divider resistance is reduced, to reduce route
Plate, which generates heat, influences the temperature rise of breaker.To improve the functional reliability and service performance of leakage circuit breakers comprehensively.
Detailed description of the invention
Fig. 1 is external structure of the Minitype electrical leakage breaker provided by the utility model in assembled state；
Fig. 2 is the decomposition chart of Minitype electrical leakage breaker provided by the utility model；
Fig. 3 is the functional block diagram of electric leakage wiring board provided by the utility model；
Fig. 4 is the circuit diagram of electric leakage wiring board provided by the utility model；
Fig. 5 is the arrangement figure of creepage mutual inductor provided by the utility model.
Specific embodiment
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
The utility model provides a kind of Minitype electrical leakage breaker, for generating in the potential circuit to AC230V and AC400V
The major loop of active cut-off breaker when leakage current, to protect electrical equipment and personal safety.
With reference to Fig. 1, Minitype electrical leakage breaker includes being no less than two identical breakers 1 and a creepage accessory 2；Electric leakage
In assembly, connecting terminal 7 is connect in inside with the leading-out terminal of breaker 1 attachment 2；Creepage accessory 2 and breaker 1 are assembled even
It connects, it is easy to assembly, and breaker can be used individually as breaker；
With reference to Fig. 2, creepage accessory includes test button 3, operating mechanism 4, electric leakage wiring board 5, creepage accessory shell 6 and connects
Line terminals 7；
Connecting terminal 7 connects electric leakage wiring board 5 in inside, for the feeder ear for the wiring board 5 that leaks electricity；Electric leakage wiring board 5 and behaviour
Make mechanism 4 to be assembled together, and then realizes the linkage of the tripping coil L1 and operating mechanism 4 of electric leakage wiring board 5；Test button 3
It is mounted on operating mechanism 4, test button 3 generates simulation leakage current by the control electric leakage wiring board 5 of operating mechanism 4；It is being powered
Minitype electrical leakage breaker can be made to thread off (disconnection) under state.
Wherein, with reference to Fig. 3, the wiring board 5 that leaks electricity includes three-phase power input end, surge absorbing circuit, rectification circuit, tripping
Coil, secondary surge absorbing circuit, controllable silicon drive circuit, bleeder circuit, electric leakage signal processing circuit, electric leakage signal sampling electricity
Road and creepage mutual inductor CT；Wherein, in specific implementation, surge absorbing circuit (RV1-RV4), rectification circuit (D1-D8 and D11-
D18), tripping coil L1, leak(age) test circuit (RT1, RT2), secondary surge absorbing circuit RV5, bleeder circuit (R1-R12), can
Control silicon driving circuit (Q1, Q2, D9, R13, C8), electric leakage signal sample circuit (C5, C6, R14, R15, C7, D10, R16, CT),
Electric leakage signal processing circuit (C1, C2, C3, C4, U1) composition.
The output of three-phase power input end successively after surge absorbing circuit and rectification circuit, is connected to tripping coil
Input terminal；There are three output ends, respectively the 1st output end, the 2nd output end and the 3rd output end for tripping coil tool；1st output end
After bleeder circuit, it is connected to the feeder ear of electric leakage signal processing circuit；2nd output end is connected to controllable silicon drive circuit
Input terminal；3rd output end is connected to secondary surge absorbing circuit；The output end of creepage mutual inductor CT is by electric leakage signal sampling electricity
Lu Hou is connected to the input terminal of electric leakage signal processing circuit；The output end of electric leakage signal processing circuit is connected to silicon-controlled driving
The control terminal of circuit, for controlling controllable silicon drive circuit on-off.
Its working principle is that:
Three-phase four-wire power enters circuit by three-phase power input end, absorbs surging signal and warp through surge absorbing circuit
After over commutation circuit rectifies, into tripping coil, electric current is divided into three tunnels after coming out from tripping coil, the first via is through bleeder circuit point
It powers after pressure for electric leakage signal processing circuit；Second tunnel connects controllable silicon drive circuit；It is inhaled through secondary surge absorbing circuit on third road
Surging signal after receiving rectification；
Controllable silicon drive circuit no power under normal circumstances；Electric leakage signal Acquisition Circuit acquires the real-time of creepage mutual inductor CT
Electric leakage signal, and it is transmitted to electric leakage signal processing circuit；When electric leakage signal processing circuit detects the presence of electric leakage signal, also,
When electric leakage signal is greater than the set value, driving controllable silicon drive circuit conducting can short circuit partial pressure after controllable silicon drive circuit conducting
Circuit, therefore, the electric current for flowing through tripping coil increased dramatically, so that tripping coil band pneumatic operating mechanism be made to disconnect breaker.
Below with reference to Fig. 4, each main circuit in electric leakage wiring board is discussed in detail:
(1) surge absorbing circuit
Three-phase power input end has A phase output terminals, B phase output terminals, C phase output terminals and zero curve N output terminal；
Surge absorbing circuit includes the 1st varistor RV1, the 2nd varistor RV2, the 3rd varistor RV3 and the 4th varistor RV4；
It is equal between any two output terminal for A phase output terminals, B phase output terminals, C phase output terminals and zero curve N output terminal
It connects two varistors, it may be assumed that connect between A phase output terminals and B phase output terminals the 1st varistor RV1 and the 2nd pressure-sensitive electricity
Hinder RV2；Connect the 1st varistor RV1 and the 3rd varistor RV3 between A phase output terminals and C phase output terminals；A phase exports
Connect the 1st varistor RV1 and the 4th varistor RV4 between terminal and zero curve N output terminal；B phase output terminals and C phase are defeated
Connect between terminal the 2nd varistor RV2 and the 3rd varistor RV3 out；It is gone here and there between B phase output terminals and zero curve N output terminal
Join the 2nd varistor RV2 and the 4th varistor RV4；The 3rd pressure-sensitive electricity of series connection between C phase output terminals and zero curve N output terminal
Hinder RV3 and the 4th varistor RV4.
(2) rectification circuit
Rectification circuit includes the 1st rectifier diode D1, the 2nd rectifier diode D2, the 3rd rectifier diode D3, the 4th rectification two
It is pole pipe D4, the 5th rectifier diode D5, the 6th rectifier diode D6, the 7th rectifier diode D7, the 8th rectifier diode D8, the 9th whole
Flow diode D9, the 10th rectifier diode D10, the 11st rectifier diode D11, the 12nd rectifier diode D12, the 13rd two poles of rectification
Pipe D13, the 14th rectifier diode D14, the 15th rectifier diode D15, the 16th rectifier diode D16, the 17th rectifier diode D17
With the 18th rectifier diode D18；
Surge absorbing circuit is with A phase exports, B phase exports, C phase exports and zero curve N output；The A phase of surge absorbing circuit
Output is divided into two branches, and a branch is connected to the anode of the 1st rectifier diode D1, and the cathode of the 1st rectifier diode D1 connects
It is connected to the anode of the 2nd rectifier diode D2, the cathode of the 2nd rectifier diode D2 is connected to one end of tripping coil L1；Another
Branch is connected to the cathode of the 11st rectifier diode D11, and the anode of the 11st rectifier diode D11 is connected to the 12nd rectifier diode
The cathode of D12, the plus earth of the 12nd rectifier diode D12；
The B phase of surge absorbing circuit, which exports, is divided into two branches, and a branch is being connected to the 3rd rectifier diode D3 just
Pole, the cathode of the 3rd rectifier diode D3 are connected to the anode of the 4th rectifier diode D4, the cathode connection of the 4th rectifier diode D4
To one end of tripping coil L1；Another branch is connected to the cathode of the 13rd rectifier diode D13, the 13rd rectifier diode D13
Anode be connected to the cathode of the 14th rectifier diode D14, the plus earth of the 14th rectifier diode D14；
The C phase of surge absorbing circuit, which exports, is divided into two branches, and a branch is being connected to the 5th rectifier diode D5 just
Pole, the cathode of the 5th rectifier diode D5 are connected to the anode of the 6th rectifier diode D6, the cathode connection of the 6th rectifier diode D6
To one end of tripping coil L1；Another branch is connected to the cathode of the 15th rectifier diode D15, the 15th rectifier diode D15
Anode be connected to the cathode of the 16th rectifier diode D16, the plus earth of the 16th rectifier diode D16；
The zero curve N output of surge absorbing circuit is divided into two branches, and a branch is being connected to the 7th rectifier diode D7 just
Pole, the cathode of the 7th rectifier diode D7 are connected to the anode of the 8th rectifier diode D8, the cathode connection of the 8th rectifier diode D8
To one end of tripping coil L1；Another branch is connected to the cathode of the 17th rectifier diode D17, the 17th rectifier diode D17
Anode be connected to the cathode of the 18th rectifier diode D18, the plus earth of the 18th rectifier diode D18.
(3) secondary surge absorbing circuit
Secondary surge absorbing circuit is the 5th varistor RV5.
(4) controllable silicon drive circuit
Controllable silicon drive circuit includes the 1st silicon-controlled Q1, the 2nd silicon-controlled Q2, the 13rd resistance R13, the 9th rectifier diode
D9, filter capacitor C8；
The other end of tripping coil L1 is connected to the anode of the 1st silicon-controlled Q1；The cathode of 1st silicon-controlled Q1 is connected to the 2nd
The anode of silicon-controlled Q2；After the control electrode of 1st silicon-controlled Q1 passes through the 13rd resistance R13 and the 9th rectifier diode D9, it is connected to three
Phase power supply；The minus earth of 2nd silicon-controlled Q2；The control electrode of 2nd silicon-controlled Q2 and the output of electric leakage signal processing circuit control
End connection；One end of filter capacitor C8 is grounded, the control electrode connection of the other end and the 2nd silicon-controlled Q2.
(5) bleeder circuit
Bleeder circuit includes multiple concatenated divider resistance units；Each divider resistance unit is by two partial pressure electricity in parallel
Resistance composition.
(6) leak(age) test circuit
It further include leak(age) test circuit；Leak(age) test circuit includes switch and power supply TS2, and switch is connect with test button 3,
Pass through maneuvering test button 3, the on-off of control switch；Power supply TS2 is connect by switch with the input terminal of surge absorbing circuit.
Principle are as follows: leak(age) test circuit is connect with test button 3, when leak(age) test button 3 is pressed, leak(age) test circuit
An electric leakage signal can be simulated, leakage circuit breakers is disconnected.
In the utility model, surge absorbing circuit is connected two-by-two using varistor (RV1-RV4) every line-to-line increases pressure
The voltage endurance and reliability of quick resistance；Rectification circuit (D1-D8 and D11-D18) increases rectified current using rectifier diode series connection
The voltage endurance on road；Secondary surge absorbing circuit is added in silicon-controlled front end using RV5, can be effectively protected silicon-controlled not because of electricity
Pressure is mutated and damages；(Q1, Q2) silicon-controlled in controllable silicon drive circuit series connection increases its voltage endurance；To improve entire circuit
Antisurge performance.
Pervious single high-power resistance is decomposed into multiple resistance (R1-R12) series connection by bleeder circuit, reduces partial pressure electricity
The temperature rise of resistance, so that reducing wiring board fever influences the temperature rise of breaker.
Electric leakage signal sample circuit acquires the electric leakage signal of creepage mutual inductor CT by sampling resistor R16；Creepage mutual inductor
CT is used to detect the leakage current of major loop, and the phase line and zero curve of major loop all have to pass through creepage mutual inductor CT；Electric leakage signal is adopted
(C5, C6, R14, R15, C7, D10) in sample circuit is used to be filtered the signal that acquisition comes, by external to creepage mutual inductor
The interference filtering of CT and circuit itself；Collected electric leakage signal is passed to electric leakage letter by electric leakage signal sample circuit after filtering
Number processing circuit.Electric leakage signal processing circuit is used to handle electric leakage signal, and when electric leakage signal is greater than the set value, driving the 2nd is controllable
Silicon Q2 conducting, so that tripping coil L1 be driven to act, the size of the adjustable sample resistance R16 of the setting value of electric leakage is realized.
The utility model has the advantage that
(1) the output end parallel connection bleeder circuit and controllable silicon drive circuit of tripping coil, the positive reason of controllable silicon drive circuit
No power under condition, is connected controllable silicon drive circuit when there is electric leakage signal, the short-circuit bleeder circuit of meeting after conducting, to make to flow through
The electric current of tripping coil increased dramatically, so that tripping coil band pneumatic operating mechanism be made to disconnect breaker.With functional reliability
High advantage；
(2) surge absorbing circuit of the design is connected two-by-two using varistor increases the voltage endurance of varistor；It is whole
Current circuit increases the voltage endurance of diode rectifier circuit using rectifier diode series connection；Controllable silicon drive circuit is using two strings
What is joined is silicon-controlled, to increase silicon-controlled voltage endurance, to improve the antisurge performance of entire circuit；In bleeder circuit,
Traditional single high-power resistance is decomposed into multiple resistance series connection, the temperature rise of divider resistance is reduced, to reduce route
Plate, which generates heat, influences the temperature rise of breaker.To improve the functional reliability and service performance of leakage circuit breakers comprehensively.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching should also regard the protection scope of the utility model.
Claims (7)
1. a kind of Minitype electrical leakage breaker, which is characterized in that attached including being no less than two identical breakers (1), an electric leakage
Part (2)；Wherein, the creepage accessory includes test button (3), operating mechanism (4), electric leakage wiring board (5), creepage accessory shell
(6) and connecting terminal (7)；
The connecting terminal (7) of the creepage accessory (2) is connect with the leading-out terminal of the breaker (1)；The electric leakage wiring board (5)
It is assembled together with the operating mechanism (4), and then realizes tripping coil (L1) and operating mechanism (4) of electric leakage wiring board (5)
Linkage；The test button (3) is mounted on operating mechanism (4), and the test button (3) is controlled by operating mechanism (4)
Leak electricity wiring board (5) generation simulation leakage current；
Wherein, the electric leakage wiring board (5) include three-phase power input end, surge absorbing circuit, rectification circuit, tripping coil,
Secondary surge absorbing circuit, controllable silicon drive circuit, bleeder circuit, electric leakage signal processing circuit, electric leakage signal sample circuit and
Creepage mutual inductor CT；The surge absorbing circuit and the rectification circuit are successively passed through in the output of the three-phase power input end
Afterwards, it is connected to the input terminal of the tripping coil；There are three output ends, respectively the 1st output end, the 2nd for the tripping coil tool
Output end and the 3rd output end；1st output end is connected to the electric leakage signal processing circuit after the bleeder circuit
Feeder ear；2nd output end is connected to the input terminal of the controllable silicon drive circuit；3rd output end is connected to institute
State secondary surge absorbing circuit；The output end of the creepage mutual inductor CT is connected to after the electric leakage signal sample circuit
The input terminal of the electric leakage signal processing circuit；The output end of the electric leakage signal processing circuit is connected to the silicon-controlled driving
The control terminal of circuit, for controlling the controllable silicon drive circuit on-off.
2. Minitype electrical leakage breaker according to claim 1, which is characterized in that the three-phase power input end has A phase
Output terminal, B phase output terminals, C phase output terminals and zero curve N output terminal；The surge absorbing circuit includes the 1st pressure-sensitive electricity
Hinder (RV1), the 2nd varistor (RV2), the 3rd varistor (RV3) and the 4th varistor (RV4)；For A phase output terminals, B
Phase output terminals, C phase output terminals and zero curve N output terminal, two varistors of connecting between any two output terminal,
That is: the 1st varistor (RV1) of series connection and the 2nd varistor (RV2) between A phase output terminals and B phase output terminals；A phase exports
The 1st varistor (RV1) of series connection and the 3rd varistor (RV3) between terminal and C phase output terminals；A phase output terminals and zero curve
The 1st varistor (RV1) of series connection and the 4th varistor (RV4) between N output terminal；B phase output terminals and C phase output terminals
Between connect the 2nd varistor (RV2) and the 3rd varistor (RV3)；It connects between B phase output terminals and zero curve N output terminal
2nd varistor (RV2) and the 4th varistor (RV4)；Series connection the 3rd is pressure-sensitive between C phase output terminals and zero curve N output terminal
Resistance (RV3) and the 4th varistor (RV4).
3. Minitype electrical leakage breaker according to claim 2, which is characterized in that the rectification circuit includes the 1st rectification two
Pole pipe (D1), the 2nd rectifier diode (D2), the 3rd rectifier diode (D3), the 4th rectifier diode (D4), the 5th rectifier diode
(D5), the 6th rectifier diode (D6), the 7th rectifier diode (D7), the 8th rectifier diode (D8), the 9th rectifier diode (D9),
10th rectifier diode (D10), the 11st rectifier diode (D11), the 12nd rectifier diode (D12), the 13rd rectifier diode
(D13), the 14th rectifier diode (D14), the 15th rectifier diode (D15), the 16th rectifier diode (D16), the 17th rectification two
Pole pipe (D17) and the 18th rectifier diode (D18)；
The surge absorbing circuit is with A phase exports, B phase exports, C phase exports and zero curve N output；The surge absorbing circuit
A phase, which exports, is divided into two branches, and a branch is connected to the anode of the 1st rectifier diode (D1), the 1st rectifier diode (D1)
Cathode is connected to the anode of the 2nd rectifier diode (D2), and the cathode of the 2nd rectifier diode (D2) is connected to tripping coil (L1)
One end；Another branch is connected to the cathode of the 11st rectifier diode (D11), the anode connection of the 11st rectifier diode (D11)
To the cathode of the 12nd rectifier diode (D12), the plus earth of the 12nd rectifier diode (D12)；
The B phase of the surge absorbing circuit, which exports, is divided into two branches, and a branch is being connected to the 3rd rectifier diode (D3) just
Pole, the cathode of the 3rd rectifier diode (D3) are connected to the anode of the 4th rectifier diode (D4), and the 4th rectifier diode (D4) is born
Pole is connected to one end of tripping coil (L1)；Another branch is connected to the cathode of the 13rd rectifier diode (D13), the 13rd rectification
The anode of diode (D13) is connected to the cathode of the 14th rectifier diode (D14), and the anode of the 14th rectifier diode (D14) connects
Ground；
The C phase of the surge absorbing circuit, which exports, is divided into two branches, and a branch is being connected to the 5th rectifier diode (D5) just
Pole, the cathode of the 5th rectifier diode (D5) are connected to the anode of the 6th rectifier diode (D6), and the 6th rectifier diode (D6) is born
Pole is connected to one end of tripping coil (L1)；Another branch is connected to the cathode of the 15th rectifier diode (D15), the 15th rectification
The anode of diode (D15) is connected to the cathode of the 16th rectifier diode (D16), and the anode of the 16th rectifier diode (D16) connects
Ground；
The zero curve N output of the surge absorbing circuit is divided into two branches, and a branch is connected to the 7th rectifier diode (D7)
Anode, the cathode of the 7th rectifier diode (D7) are connected to the anode of the 8th rectifier diode (D8), the 8th rectifier diode (D8)
Cathode is connected to one end of tripping coil (L1)；Another branch is connected to the cathode of the 17th rectifier diode (D17), and the 17th is whole
The anode of stream diode (D17) is connected to the cathode of the 18th rectifier diode (D18), the anode of the 18th rectifier diode (D18)
Ground connection.
4. Minitype electrical leakage breaker according to claim 1, which is characterized in that the secondary surge absorbing circuit is the 5th
Varistor (RV5).
5. Minitype electrical leakage breaker according to claim 1, which is characterized in that the controllable silicon drive circuit includes the 1st
Silicon-controlled (Q1), the 2nd silicon-controlled (Q2), the 13rd resistance (R13), the 9th rectifier diode (D9), filter capacitor (C8)；
The other end of the tripping coil (L1) is connected to the anode of the described 1st silicon-controlled (Q1)；1st silicon-controlled (Q1's)
Cathode is connected to the anode of the described 2nd silicon-controlled (Q2)；The control electrode of 1st silicon-controlled (Q1) passes through the 13rd resistance
(R13) and after the 9th rectifier diode (D9), it is connected to three phase mains；The minus earth of 2nd silicon-controlled (Q2)；Institute
The control electrode for stating the 2nd silicon-controlled (Q2) is connect with the output control terminal of the electric leakage signal processing circuit；The filter capacitor
(C8) one end ground connection, the control electrode connection of the other end and the described 2nd silicon-controlled (Q2).
6. Minitype electrical leakage breaker according to claim 1, which is characterized in that the bleeder circuit includes multiple concatenated
Divider resistance unit；Each divider resistance unit is made of two divider resistances in parallel.
7. Minitype electrical leakage breaker according to claim 1, which is characterized in that further include leak(age) test circuit；The leakage
Electric test circuit includes switch and power supply (TS2), and the switch is connect with the test button (3), by manipulating the test
Button (3) switches on-off described in control；The power supply (TS2) is by the switch, the input with the surge absorbing circuit
End connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821066363.5U CN208299423U (en) | 2018-07-06 | 2018-07-06 | Minitype electrical leakage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821066363.5U CN208299423U (en) | 2018-07-06 | 2018-07-06 | Minitype electrical leakage breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208299423U true CN208299423U (en) | 2018-12-28 |
Family
ID=64700998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821066363.5U Active CN208299423U (en) | 2018-07-06 | 2018-07-06 | Minitype electrical leakage breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208299423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018413A (en) * | 2019-01-12 | 2019-07-16 | 广东省民防协会 | A kind of multifunctional electric ability meter |
-
2018
- 2018-07-06 CN CN201821066363.5U patent/CN208299423U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018413A (en) * | 2019-01-12 | 2019-07-16 | 广东省民防协会 | A kind of multifunctional electric ability meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205123243U (en) | Lightning protection surge protector | |
| CN202651781U (en) | Neutral point integrated grounding complete device | |
| CN208299423U (en) | Minitype electrical leakage breaker | |
| CN201004353Y (en) | External serial clearance arrester with failure indication device | |
| CN203135401U (en) | AC invasion protection device for DC system of transformer substation | |
| CN205679686U (en) | The external chopper of electric energy meter | |
| CN206452094U (en) | Cross undervoltage intelligence from restoring to throne protection device | |
| CN106026017B (en) | A kind of leakage circuit breakers with overvoltage protection and low-voltage protection | |
| CN108933455A (en) | Over-voltage protection method and device for wind power plant | |
| CN211790721U (en) | Self-recovery type over-voltage and under-voltage protection circuit with leakage protection | |
| CN201985508U (en) | Zero line break protector and connecting structure thereof | |
| CN210092867U (en) | Converter station auxiliary device and converter station | |
| CN206962425U (en) | residual current action breaker device | |
| CN206611166U (en) | A kind of electronic type overvoltage/undervoltage protection device | |
| CN201985606U (en) | Quick access device for public emergency power supply | |
| CN207336683U (en) | Transmission lines earth fault investigates warning device | |
| CN111416323A (en) | Self-recovery type over-voltage and under-voltage protection circuit with leakage protection | |
| CN205123244U (en) | Surge protector | |
| CN216530519U (en) | Water immersion electric shock prevention and power utilization protector capable of achieving reactive compensation | |
| CN205829128U (en) | Electric energy meter Based Intelligent Control protection module | |
| CN203466562U (en) | Intelligent circuit breaker | |
| CN214755172U (en) | Live-line replacement device for lightning arrester counter | |
| CN206698019U (en) | A kind of mining low tension switch microcomputer monitor and protection device | |
| CN206595704U (en) | Small capacity transformer switch protection coincidence arrangement | |
| CN105186473B (en) | Suppression device for direct-current magnetic bias current of high-voltage winding of transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |