CN203733723U - Electromagnetic anti-thunder leakage circuit breaker - Google Patents

Electromagnetic anti-thunder leakage circuit breaker Download PDF

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Publication number
CN203733723U
CN203733723U CN201320856218.8U CN201320856218U CN203733723U CN 203733723 U CN203733723 U CN 203733723U CN 201320856218 U CN201320856218 U CN 201320856218U CN 203733723 U CN203733723 U CN 203733723U
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China
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thunder
electromagnetic
circuit breaker
lightning protection
input
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CN201320856218.8U
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Chinese (zh)
Inventor
余世伟
周灿华
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周灿华
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Abstract

The utility model relates to the technical field of breakers, especially an electromagnetic anti-thunder leakage circuit breaker. The electromagnetic anti-thunder leakage circuit breaker comprises an air breaker, a release mechanism, a zero sequence current transformer, a secondary winding, main leads, anti-thunder pressure-sensitive resistors and a grounding terminal used for connecting with ground. The anti-thunder pressure-sensitive resistors form an anti-thunder module. Input terminals of the anti-thunder pressure-sensitive resistors are connected to input terminals of the main leads. Output terminals of the anti-thunder pressure-sensitive resistors are electrically connected to the grounding terminal. Because the anti-thunder pressure-sensitive resistors are connected with the grounding terminal, the anti-thunder pressure-sensitive resistors are in a high resistance state normally. When the surge overvoltage caused by lightning stroke or other reasons is appeared in a power grid, the anti-thunder pressure-sensitive resistors can conduct rapidly in less than 25ns. Because the grounding terminal leads the surge overvoltage into ground through a grounding wire, electric equipments in the power grid are protected, the anti-thunder effect is good, and the electromagnetic anti-thunder leakage circuit breaker is safe and reliable.

Description

Electromagnetic type lightning-proof electric leakage circuit breaker
Technical field:
The utility model relates to breaker technical field, relates in particular to a kind of electromagnetic type lightning-proof electric leakage circuit breaker.
Background technology:
Circuit breaker is to ensure Electrical Safety, carry out circuit and switch requisite equipment, can protect electric equipment and personal safety.Existing lightning-proof electric leakage circuit breaker includes operating mechanism, tripping mechanism, zero sequence current mutual inductor, electronic type release, piezo-resistance, wiring board etc., piezo-resistance is attempted by the leading-out terminal of switch, by piezo-resistance discharge the overvoltage of absorption circuit, thereby reach the object of lightning protection, but existing lightning-proof electric leakage circuit breaker is electronic type structure, itself there is the not resistance to thunderbolt of electronic component, and all there is no a reliable ground, in the time being struck by lightning continuously, circuit breaker cannot continuous absorption thunder-strike current, continuous thunder-strike current can cause piezo-resistance blast and electronic circuit board to burn, bring potential safety hazard, lightning protection properties is unreliable, can not meet normal lightning protection demand.And all lightening protection engineerings are all to have reliable grounding-for-lightning device to be only real lightening protection engineering.
Utility model content:
The purpose of this utility model is exactly the deficiency existing for prior art and provide that a kind of lightning protection effect is good, the electromagnetic type lightning-proof electric leakage circuit breaker of safety and reliability.
To achieve these goals, the technical solution adopted in the utility model is:
Electromagnetic type lightning-proof electric leakage circuit breaker, it includes air circuit, tripping mechanism, zero sequence current mutual inductor, be wrapped in secondary winding on zero sequence current mutual inductor, by the main traverse line passing in zero sequence current mutual inductor, the input of main traverse line connects the output of air circuit, secondary winding is connected with tripping mechanism, also include lightning protection piezo-resistance, earth terminal for ground connection, the input of lightning protection piezo-resistance is electrically connected with the input of main traverse line, the output electrical connection earth terminal of lightning protection piezo-resistance.
Described lightning protection piezo-resistance has two, main traverse line has two, article two, the input of main traverse line connects respectively the out of phase output of air circuit, the input of two lightning protection piezo-resistances is electrically connected with the input of two main traverse lines respectively, and the output of two lightning protection piezo-resistances is all electrically connected earth terminal.
Between described two main traverse lines, be electrically connected with leak(age) test device.
Described two lightning protection piezo-resistances are fixedly connected with and form together monolithic construction.
Described tripping mechanism include electromagnetic leakage open circuit actuating mechanism, promote electromagnetic leakage open circuit actuating mechanism open circuit action electromagnetic release, the two ends of secondary winding are electrically connected with the input of electromagnetic release respectively, and electromagnetic release is fixedly connected on electromagnetic leakage and opens circuit in actuating mechanism.
The utility model beneficial effect is: the utility model includes air circuit, tripping mechanism, zero sequence current mutual inductor, be wrapped in the secondary winding on zero sequence current mutual inductor, by the main traverse line passing in zero sequence current mutual inductor, the input of main traverse line connects the output of air circuit, secondary winding is connected with tripping mechanism, also include lightning protection piezo-resistance, for the earth terminal of ground connection, lightning protection piezo-resistance forms lightning-protection module, the input of lightning protection piezo-resistance is electrically connected with the input of main traverse line, the output electrical connection earth terminal of lightning protection piezo-resistance, the utility model is by connecting lightning protection piezo-resistance the mode ground connection of earth terminal, under normal circumstances, lightning protection piezo-resistance is in high-impedance state, when electrical network is because thunderbolt or other reasons are while occurring surge over voltage, lightning protection piezo-resistance can be being less than in the 25ns time conducting rapidly, through earth connection, overvoltage surge is introduced to the earth by earth terminal, thereby protect the power consumption equipment on electrical network, lightning protection effect is good, safe and reliable, when this overvoltage surge enters the earth and disappears by lightning protection piezo-resistance after, lightning protection piezo-resistance is restored to high-impedance state, thereby do not affect the normal operation of electrical network, and lightning-proof electric leakage circuit breaker of the present utility model is electromagnetic type structure, simple in structure, there is no electronic circuit board and other electronic devices and components, resistance to thunderbolt, not misoperation, good reliability, long service life.
Brief description of the drawings:
Fig. 1 is principle schematic of the present utility model.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further described, as shown in Figure 1, electromagnetic type lightning-proof electric leakage circuit breaker, it includes air circuit 1, tripping mechanism 2, zero sequence current mutual inductor 3, be wrapped in the secondary winding 4 on zero sequence current mutual inductor 3, article two, by the main traverse line 5 passing in zero sequence current mutual inductor 3, two lightning protection piezo-resistances 6, for the earth terminal 7 of ground connection, article two, the input of main traverse line 5 connects respectively the out of phase output of air circuit 1, secondary winding 4 is connected with tripping mechanism 2, two lightning protection piezo-resistances 6 are fixedly connected with and form together monolithic construction formation lightning-protection module, the input of two lightning protection piezo-resistances 6 is electrically connected with the input of two main traverse lines 5 respectively, the output of two lightning protection piezo-resistances 6 is all electrically connected earth terminal 7.Article two, between main traverse line 5, be electrically connected with leak(age) test device 8.Two main traverse lines of the utility model 5 are each connects a lightning protection piezo-resistance 6, the lightning-proof electric leakage circuit breaker tripping operation of also can normally the working in the situation that of phase shortage line, better reliability.
Tripping mechanism 2 is electromagnetic type structure, tripping mechanism 2 includes the electromagnetic leakage actuating mechanism 21 that opens circuit, promote electromagnetic leakage open circuit actuating mechanism 21 open circuit action electromagnetic release 22, the two ends of secondary winding 4 are electrically connected with the lead-in wire of electromagnetic release 22 inputs respectively, electromagnetic release 22 is fixedly connected on electromagnetic leakage and opens circuit in actuating mechanism 21, the action output of electromagnetic release 22 drives and connects the electromagnetic leakage actuating mechanism 21 that opens circuit, antijamming capability is stronger, humidity, good reliability, even if lacked zero line, only has a live wire, the utility model also can normally be worked, safe.
The utility model is by connecting lightning protection piezo-resistance 6 the mode ground connection of earth terminal 7, under normal circumstances, lightning protection piezo-resistance 6 is in high-impedance state, when electrical network is because thunderbolt or other reasons are while occurring surge over voltage, lightning protection piezo-resistance 6 can be being less than conducting rapidly in the 25ns time, through earth connection, overvoltage surge is introduced to the earth by earth terminal 7, thereby protect the power consumption equipment on electrical network, lightning protection effect is good, safe and reliable, when this overvoltage surge enters the earth and disappears by lightning protection piezo-resistance 6 after, lightning protection piezo-resistance 6 is restored to high-impedance state, thereby do not affect the normal operation of electrical network, and the each several part such as tripping mechanism 2, lightning-protection module of lightning-proof electric leakage circuit breaker of the present utility model is all electromagnetic type structure, simple in structure, there is no electronic circuit board and other electronic devices and components, resistance to thunderbolt, not misoperation, good reliability, long service life.
Certainly, the above is only preferred embodiment of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.

Claims (5)

1. electromagnetic type lightning-proof electric leakage circuit breaker, include air circuit (1), tripping mechanism (2), zero sequence current mutual inductor (3), be wrapped in the secondary winding (4) on zero sequence current mutual inductor (3), by the main traverse line (5) passing in zero sequence current mutual inductor (3), the input of main traverse line (5) connects the output of air circuit (1), secondary winding (4) is connected with tripping mechanism (2), it is characterized in that: also include lightning protection piezo-resistance (6), for the earth terminal (7) of ground connection, the input of lightning protection piezo-resistance (6) is electrically connected with the input of main traverse line (5), the output electrical connection earth terminal (7) of lightning protection piezo-resistance (6).
2. electromagnetic type lightning-proof electric leakage circuit breaker according to claim 1, it is characterized in that: described lightning protection piezo-resistance (6) has two, main traverse line (5) has two, article two, the input of main traverse line (5) connects respectively the out of phase output of air circuit (1), the input of two lightning protection piezo-resistances (6) is electrically connected with the input of two main traverse lines (5) respectively, and the output of two lightning protection piezo-resistances (6) is all electrically connected earth terminal (7).
3. electromagnetic type lightning-proof electric leakage circuit breaker according to claim 2, is characterized in that: between described two main traverse lines (5), be electrically connected with leak(age) test device (8).
4. electromagnetic type lightning-proof electric leakage circuit breaker according to claim 2, is characterized in that: described two lightning protection piezo-resistances (6) are fixedly connected with and form together monolithic construction.
5. according to the electromagnetic type lightning-proof electric leakage circuit breaker described in claim 1~4 any one, it is characterized in that: described tripping mechanism (2) include electromagnetic leakage open circuit actuating mechanism (21), promote electromagnetic leakage open circuit actuating mechanism (21) open circuit action electromagnetic release (22), the two ends of secondary winding (4) are electrically connected with the input of electromagnetic release (22) respectively, and electromagnetic release (22) is fixedly connected on electromagnetic leakage and opens circuit in actuating mechanism (21).
CN201320856218.8U 2013-12-23 2013-12-23 Electromagnetic anti-thunder leakage circuit breaker Active CN203733723U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320856218.8U CN203733723U (en) 2013-12-23 2013-12-23 Electromagnetic anti-thunder leakage circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320856218.8U CN203733723U (en) 2013-12-23 2013-12-23 Electromagnetic anti-thunder leakage circuit breaker

Publications (1)

Publication Number Publication Date
CN203733723U true CN203733723U (en) 2014-07-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320856218.8U Active CN203733723U (en) 2013-12-23 2013-12-23 Electromagnetic anti-thunder leakage circuit breaker

Country Status (1)

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CN (1) CN203733723U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111884189A (en) * 2020-09-02 2020-11-03 国网安徽省电力有限公司宣城供电公司 Zero-phase open circuit protection circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111884189A (en) * 2020-09-02 2020-11-03 国网安徽省电力有限公司宣城供电公司 Zero-phase open circuit protection circuit breaker

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