CN104577979A - Novel residual current circuit-breaker circuit - Google Patents

Novel residual current circuit-breaker circuit Download PDF

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Publication number
CN104577979A
CN104577979A CN201510042970.2A CN201510042970A CN104577979A CN 104577979 A CN104577979 A CN 104577979A CN 201510042970 A CN201510042970 A CN 201510042970A CN 104577979 A CN104577979 A CN 104577979A
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CN
China
Prior art keywords
circuit
residual current
breaker
novel
resistance
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.)
Pending
Application number
CN201510042970.2A
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Chinese (zh)
Inventor
余存泰
肖义峰
章火明
李其利
彭昆明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CNC Electric Group Co Ltd
Original Assignee
CNC Electric Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CNC Electric Group Co Ltd filed Critical CNC Electric Group Co Ltd
Priority to CN201510042970.2A priority Critical patent/CN104577979A/en
Publication of CN104577979A publication Critical patent/CN104577979A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a novel residual current circuit-breaker circuit which comprises a power input. The novel residual current circuit-breaker circuit is characterized by further comprising a power circuit, a residual current signal conditioning circuit, a residual current detection and control unit, a circuit needed by the residual current detection and control unit, a residual current test circuit, an overvoltage detection circuit and a trip circuit, wherein the power circuit comprises a surge suppression circuit, a half-wave rectifying circuit, a resistance voltage reduction circuit , an external voltage stabilizing circuit and a filter circuit. The novel residual current circuit-breaker circuit is simple in design, and high in electromagnetic compatibility resistance characteristic, a residual current circuit-breaker is completely identical with small residual current circuit-breaker circuits in size, and the residual current circuit-breaker circuit solves the problem that a traditional small overvoltage protection type residual current circuit-breaker needs to be provided with an overvoltage module, as a result, the size of the traditional small overvoltage protection type residual current circuit-breaker is increased, and the traditional small overvoltage protection type residual current circuit-breaker can not be conveniently assembled on a distribution box in a matched mode. The novel residual current circuit-breaker circuit is simple in structure design, low in production cost, and quite suitable for meeting the actual market requirements.

Description

Novel residual current circuit breaker circuit
Technical field
The present invention relates to breaker technical field, more particularly, relate to a kind of novel residual current circuit breaker circuit.
Background technology
Traditional residual current circuit breaker circuit is without over-voltage protecting function, if need to be equipped with over-voltage protecting function, product must configure a special over-voltage protection module to realize overvoltage protection.Its shortcoming: small product size is larger than former small-sized residual current circuit breaker, cooperation that is inconvenient and distribution box is assembled; Not only complex structural designs, and production cost is high, is unfavorable for the actual demand in market.Power circuit adopts the form of full-wave rectification and resistance step-down simultaneously, because its VD of full-wave rectifying circuit approximates 0.9 times of AC-input voltage; For the operating current of cooperation residual current detection unit and the requirement of product structure volume, resistance reduction voltage circuit cannot adopt the dropping resistor of high-power, large resistance, general method is that the method for employing two resistant series reduces temperature rise, so that dropping resistor temperature rise ratio when normal work is higher, thus reduces the reliability of whole circuit working.
Therefore, prior art urgently has greatly improved.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, a kind of novel residual current circuit breaker circuit is provided, comprise: power supply inputs, it is characterized in that, described novel residual current circuit breaker circuit also comprises: circuit, residual current hookup, over-voltage detection circuit and trip circuit needed for power circuit, residual current signal conditioning circuit, residual current detection control unit, residual current detection control unit; Wherein, power circuit comprises surge restraint circuit, half-wave rectifying circuit, resistance reduction voltage circuit, external voltage stabilizing circuit, filter circuit; Residual current signal conditioning circuit comprises resistance R5, R6, R7, electric capacity C2, C6, C8, C9 and diode D2; Residual current detection control unit comprises residual current detection integrated circuit U1; Needed for residual current detection control unit, circuit comprises electric capacity C3, C4, C7; Residual current hookup comprises resistance R3; Trip circuit comprises diode D3 and release L; Over-voltage detection circuit comprises resistance R19, R20, electric capacity C27 and bidirectional trigger diode D8.
In novel residual current circuit breaker circuit of the present invention, described residual current detection integrated circuit U1 refers to VG54123.
In novel residual current circuit breaker circuit of the present invention, described surge restraint circuit comprises piezo-resistance MYR1.
In novel residual current circuit breaker circuit of the present invention, described half-wave rectifying circuit comprises diode D5 further.
In novel residual current circuit breaker circuit of the present invention, described resistance reduction voltage circuit comprises resistance R1 further.
In novel residual current circuit breaker circuit of the present invention, described external voltage stabilizing circuit comprises voltage stabilizing didoe D1 further.
In novel residual current circuit breaker circuit of the present invention, described filter circuit comprises resistance R4, electric capacity C5, C1 further.
Implement novel residual current circuit breaker circuit of the present invention, there is following beneficial effect: the rectification circuit in power circuit adopts the form of halfwave rectifier, its VD approximates 0.45 times of AC-input voltage, the input voltage of whole resistance reduction voltage circuit is made to reduce about 1 half than the reduction voltage circuit in current common small sized residual current circuit breaker power circuit, so do not need employing high-power, the dropping resistor of large resistance, the temperature rise that the method for two resistant series produces to reduce resistance heating is not needed yet, not only simplify the design of circuit, and greatly reduce the temperature rise of dropping resistor, improve the reliability of product, when adopting external voltage stabilizing circuit greatly to improve without external voltage stabilizing circuit, the ability of the anti-impulse train of product is low, easily causes the phenomenon of false tripping simultaneously, before tripping coil L is positioned over piezo-resistance MYR1, protects piezo-resistance MYR1 and controllable silicon D3, improve the antijamming capability of circuit, overvoltage detection circuit adopts electric resistance partial pressure and bidirectional trigger diode matching detection, by the form of capacitor filtering, overvoltage detection circuit is designed more stable, reliable, simple, the anti-electromagnetic compatibility characteristic of whole circuit design is high, small product size is the same with the volume safety of small-sized residual current circuit breaker simultaneously, the small-sized residual current circuit breaker solving traditional overvoltage protection needs to be equipped with die block and causes its volume to increase, and cooperation that is inconvenient and distribution box is assembled, and product structure design is simple, at the bottom of production cost, be applicable to very much the actual demand in market.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is traditional residual tie breaker circuit theory diagrams;
Fig. 2 is the novel residual current circuit breaker circuit theory diagrams of the present invention.
Embodiment
Referring to Fig. 1, is traditional residual tie breaker circuit theory diagrams.As shown in Figure 1, power circuit adopts the form of full-wave rectification and resistance step-down, because its VD of full-wave rectifying circuit approximates 0.9 times of AC-input voltage; For the operating current of cooperation residual current detection unit and the requirement of product structure volume, resistance reduction voltage circuit cannot adopt the dropping resistor of high-power, large resistance, and general method is that the method for employing two resistant series reduces temperature rise; Without over-voltage protecting function; if need to be equipped with over-voltage protecting function; product must configure a special over-voltage protection module to realize overvoltage protection; cause small product size larger than former small-sized residual current circuit breaker; cooperation that is inconvenient and distribution box is assembled; complex structural designs simultaneously, production cost is high, is unfavorable for the actual demand in market.
Incorporated by reference to consulting Fig. 2, be the novel residual current circuit breaker circuit theory diagrams of the present invention.As shown in Figure 2, in the first embodiment provided by the invention, at least comprise: power supply inputs, circuit, residual current hookup, over-voltage detection circuit and trip circuit needed for power circuit, residual current signal conditioning circuit, residual current detection control unit, residual current detection control unit; Wherein, power circuit comprises surge restraint circuit, half-wave rectifying circuit, resistance reduction voltage circuit, external voltage stabilizing circuit, filter circuit; Residual current signal conditioning circuit comprises resistance R5, R6, R7, electric capacity C2, C6, C8, C9 and diode D2; Residual current detection control unit comprises residual current detection integrated circuit U1; Needed for residual current detection control unit, circuit comprises electric capacity C3, C4, C7; Residual current hookup comprises resistance R3; Trip circuit comprises diode D3 and release L; Over-voltage detection circuit comprises resistance R19, R20, electric capacity C27 and bidirectional trigger diode D8.
Described residual current detection integrated circuit U1 refers to VG54123.
Described surge restraint circuit comprises piezo-resistance MYR1.
Described half-wave rectifying circuit comprises diode D5 further.
Described resistance reduction voltage circuit comprises resistance R1 further.
Described external voltage stabilizing circuit comprises voltage stabilizing didoe D1 further.
Described filter circuit comprises resistance R4, electric capacity C5, C1 further.
The present invention is by the design of above first embodiment, the form of the rectification circuit employing halfwave rectifier in power circuit can be accomplished, its VD approximates 0.45 times of AC-input voltage, the input voltage of whole resistance reduction voltage circuit is made to reduce about 1 half than the reduction voltage circuit in current common small sized residual current circuit breaker power circuit, so do not need employing high-power, the dropping resistor of large resistance, the temperature rise that the method for two resistant series produces to reduce resistance heating is not needed yet, not only simplify the design of circuit, and greatly reduce the temperature rise of dropping resistor, improve the reliability of product, when adopting external voltage stabilizing circuit greatly to improve without external voltage stabilizing circuit, the ability of the anti-impulse train of product is low, easily causes the phenomenon of false tripping simultaneously, before tripping coil L is positioned over piezo-resistance MYR1, protects piezo-resistance MYR1 and controllable silicon D3, improve the antijamming capability of circuit, overvoltage detection circuit adopts electric resistance partial pressure and bidirectional trigger diode matching detection, by the form of capacitor filtering, overvoltage detection circuit is designed more stable, reliable, simple, the anti-electromagnetic compatibility characteristic of whole circuit design is high, small product size is the same with the volume safety of small-sized residual current circuit breaker simultaneously, the small-sized residual current circuit breaker solving conventional point overvoltage protection needs to be equipped with die block and causes its volume to increase, and cooperation that is inconvenient and distribution box is assembled, and product structure design is simple, at the bottom of production cost, be applicable to very much the actual demand in market.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that when not departing from the scope of the invention, can carry out various change and equivalent replacement.In addition, for adapting to the specific occasion of the technology of the present invention, can many amendments be carried out to the present invention and not depart from its protection range.Therefore, the present invention is not limited to specific embodiment disclosed herein, and comprises all embodiments dropping into claims.

Claims (7)

1. a novel residual current circuit breaker circuit, comprise: power supply inputs, it is characterized in that, described novel residual current circuit breaker circuit also comprises: circuit, residual current hookup, over-voltage detection circuit and trip circuit needed for power circuit, residual current signal conditioning circuit, residual current detection control unit, residual current detection control unit;
Wherein, power circuit comprises surge restraint circuit, half-wave rectifying circuit, resistance reduction voltage circuit, external voltage stabilizing circuit, filter circuit; Residual current signal conditioning circuit comprises resistance R5, R6, R7, electric capacity C2, C6, C8, C9 and diode D2; Residual current detection control unit comprises residual current detection integrated circuit U1; Needed for residual current detection control unit, circuit comprises electric capacity C3, C4, C7; Residual current hookup comprises resistance R3; Trip circuit comprises diode D3 and release L; Over-voltage detection circuit comprises resistance R19, R20, electric capacity C27 and bidirectional trigger diode D8.
2. novel residual current circuit breaker circuit according to claim 1, is characterized in that, described residual current detection integrated circuit U1 refers to VG54123.
3. novel residual current circuit breaker circuit according to claim 1, it is characterized in that, described surge restraint circuit comprises piezo-resistance MYR1.
4. novel residual current circuit breaker circuit according to claim 1, it is characterized in that, described half-wave rectifying circuit comprises diode D5 further.
5. novel residual current circuit breaker circuit according to claim 1, is characterized in that, described resistance reduction voltage circuit comprises resistance R1 further.
6. novel residual current circuit breaker circuit according to claim 1, is characterized in that, described external voltage stabilizing circuit comprises voltage stabilizing didoe D1 further.
7. novel residual current circuit breaker circuit according to claim 1, is characterized in that, described filter circuit comprises resistance R4, electric capacity C5, C1 further.
CN201510042970.2A 2015-01-28 2015-01-28 Novel residual current circuit-breaker circuit Pending CN104577979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510042970.2A CN104577979A (en) 2015-01-28 2015-01-28 Novel residual current circuit-breaker circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510042970.2A CN104577979A (en) 2015-01-28 2015-01-28 Novel residual current circuit-breaker circuit

Publications (1)

Publication Number Publication Date
CN104577979A true CN104577979A (en) 2015-04-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510042970.2A Pending CN104577979A (en) 2015-01-28 2015-01-28 Novel residual current circuit-breaker circuit

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2512109Y (en) * 2002-01-15 2002-09-18 董世荣 Power circuit breaker with multifunctional protections
CN101145683A (en) * 2007-10-31 2008-03-19 李志学 Control device for residual current of low-voltage power grid
CN101316037A (en) * 2007-05-29 2008-12-03 浙江正泰电器股份有限公司 Aftercurrent action protector with self-diagnostic function
CN201188536Y (en) * 2008-05-14 2009-01-28 郑培木 Protector for over voltage, undervoltage and lack phase of power supply
CN201210614Y (en) * 2008-05-23 2009-03-18 陈家斌 Residual current controlling and monitoring protector
DE202009007389U1 (en) * 2009-05-23 2009-10-08 Schulz, Torsten FI tripping protection for overvoltages
CN201465940U (en) * 2009-08-03 2010-05-12 河北宝凯电器有限公司 Multifunctional minitype circuit breaker
CN201717606U (en) * 2010-07-30 2011-01-19 夏炎 Electricity-leakage circuit breaker used for remote control of undervoltage and overvoltage power supply and used on prepayment electricity meter
CN103500984A (en) * 2013-10-08 2014-01-08 长城电器集团有限公司 Circuit of miniature residual current circuit breaker
CN204333915U (en) * 2015-01-28 2015-05-13 长城电器集团有限公司 Novel residual current circuit breaker circuit

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2512109Y (en) * 2002-01-15 2002-09-18 董世荣 Power circuit breaker with multifunctional protections
CN101316037A (en) * 2007-05-29 2008-12-03 浙江正泰电器股份有限公司 Aftercurrent action protector with self-diagnostic function
CN101145683A (en) * 2007-10-31 2008-03-19 李志学 Control device for residual current of low-voltage power grid
CN201188536Y (en) * 2008-05-14 2009-01-28 郑培木 Protector for over voltage, undervoltage and lack phase of power supply
CN201210614Y (en) * 2008-05-23 2009-03-18 陈家斌 Residual current controlling and monitoring protector
DE202009007389U1 (en) * 2009-05-23 2009-10-08 Schulz, Torsten FI tripping protection for overvoltages
CN201465940U (en) * 2009-08-03 2010-05-12 河北宝凯电器有限公司 Multifunctional minitype circuit breaker
CN201717606U (en) * 2010-07-30 2011-01-19 夏炎 Electricity-leakage circuit breaker used for remote control of undervoltage and overvoltage power supply and used on prepayment electricity meter
CN103500984A (en) * 2013-10-08 2014-01-08 长城电器集团有限公司 Circuit of miniature residual current circuit breaker
CN204333915U (en) * 2015-01-28 2015-05-13 长城电器集团有限公司 Novel residual current circuit breaker circuit

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Application publication date: 20150429

RJ01 Rejection of invention patent application after publication