EP2731122B1 - Magnetischer wärmeschutzschalter und energieverteilungsvorrichtung - Google Patents

Magnetischer wärmeschutzschalter und energieverteilungsvorrichtung Download PDF

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Publication number
EP2731122B1
EP2731122B1 EP12819048.5A EP12819048A EP2731122B1 EP 2731122 B1 EP2731122 B1 EP 2731122B1 EP 12819048 A EP12819048 A EP 12819048A EP 2731122 B1 EP2731122 B1 EP 2731122B1
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EP
European Patent Office
Prior art keywords
wiring terminal
state monitoring
circuit breaker
disposed
magnetic circuit
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
Application number
EP12819048.5A
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English (en)
French (fr)
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EP2731122A1 (de
EP2731122A4 (de
Inventor
Cheng REN
Cheng MA
Kai ZHENG
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.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies 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
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Publication of EP2731122A1 publication Critical patent/EP2731122A1/de
Publication of EP2731122A4 publication Critical patent/EP2731122A4/de
Application granted granted Critical
Publication of EP2731122B1 publication Critical patent/EP2731122B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms

Definitions

  • the present invention relates to the field of circuit protection technologies, and in particular, to a thermal magnetic circuit breaker and a power distribution device.
  • a thermal magnetic circuit breaker is an electrical device that can be switched manually, and can also perform loss-voltage protection, under-voltage protection, over-load protection and short-circuit protection automatically.
  • the thermal magnetic circuit breaker can perform protection on a power line, an electric motor and so on, and when the power line or the electric motor has a serious fault, such as over-load, or short-circuit, and under-voltage, the thermal magnetic circuit breaker can automatically cut off the circuit.
  • the thermal magnetic circuit breaker has been widely applied in the field of circuit protection technologies, for example, in protection of a circuit of a power distribution device.
  • the thermal magnetic circuit breaker in the prior art is as shown in FIG. 1 , the thermal magnetic circuit breaker includes an insulating case 11, the insulating case 11 is disposed with a part portion 12, and the part portion 12 includes a contact arc blowout system 121, a free tripping mechanism 122, a handle 123 for operation control, a bimetallic strip 124, and a magnetic tripping mechanism 125.
  • a handle penetration hole 111 for the handle 123 to penetrate is disposed on one side of the insulating case 11.
  • the insulating case 11 is disposed with a first wiring terminal 13 and a second wiring terminal 14.
  • the first wiring terminal 13 is disposed above the part portion 12
  • the second wiring terminal 14 is disposed below the part portion 12
  • the thermal magnetic circuit breaker is connected to an external circuit through the first wiring terminal 13 and the second wiring terminal 14.
  • a guide rail slot 15 for being fixed with the external is disposed at a rear part of the thermal magnetic circuit breaker.
  • Embodiments of the present invention provide a thermal magnetic circuit breaker and a power distribution device, which can solve a problem in the prior art that a thermal magnetic circuit breaker occupies large height space and cannot be applied in short space.
  • a thermal magnetic circuit breaker includes an insulating case and a handle; the insulating case is disposed with a part portion and a wiring terminal portion, the part portion includes an arc blowout chamber, a magnetic tripper, a bimetallic strip and a tripping mechanism, the wiring terminal portion includes a first wiring terminal and a second wiring terminal, a movable contact of the arc blowout chamber is connected to the tripping mechanism through an upper end connecting rod of the tripping mechanism, the tripping mechanism is connected to an end of a coil of the magnetic tripper through a flexible connector, the other end of the coil of the magnetic tripper is connected to the bimetallic strip and one end of the first wiring terminal through a flexible connector, and one end of the second wiring terminal is connected to a static contact seat of the arc blowout chamber; the handle passes through a handle penetration hole and is hinged to the tripping mechanism; the handle penetration hole is disposed on one side of the insulating case; and the insulating case is a cuboid, the
  • a power distribution device includes a power generator, a transformer, a power line and the thermal magnetic circuit breaker.
  • the wiring terminal portion is disposed at the same side or opposite side of the handle, and the longitudinal height of the wiring terminal portion is less than or equal to the longitudinal height of the part portion.
  • the first wiring terminal is disposed above the part portion, and the second wiring terminal is disposed below the part portion. Therefore, the longitudinal height of the wiring terminal portion disposed in the embodiments of the present invention is less than or equal to the longitudinal height of the part portion, thereby reducing the height space occupied by the thermal magnetic circuit breaker, and facilitating the thermal magnetic circuit breaker to be applied in short space.
  • a thermal magnetic circuit breaker includes an insulating case 21 and a handle 29.
  • the insulating case 21 is disposed with a part portion and a wiring terminal portion, the part portion includes an arc blowout chamber 24, a magnetic tripper 28, a bimetallic strip 27, and a tripping mechanism 25;
  • the wiring terminal portion includes a first wiring terminal 22 and a second wiring terminal 23.
  • the arc blowout chamber 24 includes a static contact seat 241, a static contact 242 and a movable contact 243.
  • One end of the static contact seat 241 is welded to one end of the first wiring terminal 22, the other end of the static contact seat 241 is disposed with the static contact 242, the static contact 242 is crimping connected to the movable contact 243 when there is current flowing through the circuit breaker, and the movable contact 243 is connected to the tripping mechanism 25 through an upper end connecting rod of the tripping mechanism 25.
  • a lower end connecting rod of the tripping mechanism 25 is disposed at a gap between the bimetallic strip 27 and the magnetic tripper 28.
  • the thermal magnetic circuit breaker is further disposed with the handle 29, the tripping mechanism 25 is hinged to the handle 29 so that when a fault occurs, the tripping mechanism 25 can drive the handle 29 to trip, and the other end of the handle 29 besides the end hinged to the tripping mechanism 25 penetrates the handle penetration hole 211.
  • a movable iron core 281 is disposed inside a coil of the magnetic tripper 28, and a push rod 282 is disposed inside the movable iron core 281; there is a flexible connector 26 welded to one end of the coil of the magnetic tripper 28, and one end of the flexible connector 26, one end of the bimetallic strip 27 and one end of the second wiring terminal 23 are welded into one piece.
  • the handle 29 passes through the handle penetration hole 211 and is hinged to the tripping mechanism 25; the handle penetration hole 211 is disposed on one side of the insulating case 21.
  • the insulating case 21 is a cuboid
  • the wiring terminal portion is disposed at the same side or opposite side of the handle 29, and longitudinal height of the wiring terminal portion is less than or equal to longitudinal height of the part portion.
  • the wiring terminal portion is disposed at the same side or opposite side of the handle, and the longitudinal height of the wiring terminal portion is less than or equal to the longitudinal height of the part portion.
  • the first wiring terminal is disposed above the part portion, and the second wiring terminal is disposed below the part portion. Therefore, the longitudinal height of the wiring terminal portion disposed in the embodiment of the present invention is less than or equal to the longitudinal height of the part portion, thereby reducing the height space occupied by the thermal magnetic circuit breaker, and facilitating the thermal magnetic circuit breaker to be applied in short space.
  • thermal magnetic circuit breaker in FIG. 2 (b) is described in further detail in the following.
  • a thermal magnetic circuit breaker includes an insulating case 21 and a handle 29.
  • the insulating case 21 is disposed with a part portion and a wiring terminal portion, the part portion includes an arc blowout chamber 24, a magnetic tripper 28, a bimetallic strip 27, and a tripping mechanism 25;
  • the wiring terminal portion includes a first wiring terminal 22 and a second wiring terminal 23.
  • first wiring terminal 22 is welded to a static contact seat 21 of the arc blowout chamber 24; one end of the second wiring terminal 23 is welded to one end of the bimetallic strip 27, and is connected to the magnetic tripper 28 through a flexible connector; the handle 29 passes through a handle penetration hole 211 and is hinged to the tripping mechanism 25, and the handle penetration hole 211 is disposed on one side of the insulating case 21.
  • the insulating case 21 is a cuboid, the wiring terminal portion is disposed at the same side of the handle 29, and longitudinal height of the wiring terminal portion is less than or equal to longitudinal height of the part portion.
  • first wiring terminal 22 and the second wiring terminal 23 may be, but are not limited to, copper wiring terminals or aluminum wiring terminals.
  • the thermal magnetic circuit breaker is fixed to an external environment through a fixing screw hole and a screw, or fixing may also be performed through the disposed guide rail slot, to which the present invention is not limited.
  • a fixing screw hole 212 is disposed on a side opposite to the side disposed with the wiring terminal portion is taken for description here.
  • first wiring terminal 22 and the second wiring terminal 23 may be, but are not limited to, cage terminals, stud-type wiring terminals, push-in bolt terminals, push-in Q.C terminals, or bus-type terminals.
  • the first wiring terminal 22 and the second wiring terminal 23 are cage terminals.
  • the first wiring terminal 22 and the second wiring terminal 23 are stud-type wiring terminals.
  • the first wiring terminal 22 and the second wiring terminal 23 are push-in bolt terminals.
  • the first wiring terminal 22 and the second wiring terminal 23 are push-in Q.C terminals.
  • the first wiring terminal 22 and the second wiring terminal 23 are bus-type terminals.
  • a material of the arc blowout chamber 24 may be a permanent magnet material.
  • the thermal magnetic circuit breaker adopts the arc blowout chamber made of the permanent magnet material to enable an arc formed during a break of a circuit to blow out rapidly, and may be applied in a direct current circuit, so that the thermal magnetic circuit breaker is used as a direct current thermal magnetic circuit breaker.
  • the side disposed with the handle penetration hole 211 is disposed with a state monitoring lead penetration hole 213, and the thermal magnetic circuit breaker further includes a first state monitoring lead 31 and a second state monitoring lead 32, one end of the first state monitoring lead 31 passes through the state monitoring lead penetration hole 213, the other end of the first state monitoring lead 31 is welded to the first wiring terminal 22, one end of the second state monitoring lead 32 passes through the state monitoring lead penetration hole 213, and the other end of the second state monitoring lead 31 is welded to the second wiring terminal 23.
  • ON and OFF of an internal circuit of the thermal magnetic circuit breaker may be monitored in real time, for example, the external device may be, but is not limited to, an indicator light.
  • the side disposed with the handle penetration hole 211 is disposed with a monitoring apparatus 33, and the monitoring apparatus 33 is connected to the first state monitoring lead 31 and the second state monitoring lead 32.
  • the monitoring apparatus may be, but is not limited to, an indicator light.
  • thermal magnetic circuit breaker provided in the embodiments of the present invention, a working process of the thermal magnetic circuit breaker is described briefly in the following.
  • the thermal magnetic circuit breaker may be applied in short-circuit protection of a circuit, for example:
  • the thermal magnetic circuit breaker may also be applied in over-current protection of a circuit, for example:
  • the wiring terminal portion is disposed at the same side or opposite side of the handle, and the longitudinal height of the wiring terminal portion is less than or equal to the longitudinal height of the part portion.
  • the first wiring terminal is disposed above the part portion, and the second wiring terminal is disposed below the part portion. Therefore, the longitudinal height of the wiring terminal portion disposed in the embodiment of the present invention is less than or equal to the longitudinal height of the part portion, thereby reducing the height space occupied by the thermal magnetic circuit breaker, and facilitating the thermal magnetic circuit breaker to be applied in short space.
  • An embodiment of the present invention provides a power distribution device, including a power generator, a transformer, a power line and a thermal magnetic circuit breaker.
  • the thermal magnetic circuit breaker includes: an insulating case and a handle.
  • the insulating case is disposed with a part portion and a wiring terminal portion, the part portion includes an arc blowout chamber, a magnetic tripper, a bimetallic strip, and a tripping mechanism; and the wiring terminal portion includes a first wiring terminal and a second wiring terminal.
  • a movable contact of the arc blowout chamber is connected to the tripping mechanism through an upper end connecting rod of the tripping mechanism, the tripping mechanism is connected to one end of a coil of the magnetic tripper through a flexible connector, the other end of the coil of the magnetic tripper is connected to the bimetallic strip and one end of the first wiring terminal through a flexible connector, and one end of the second wiring terminal is connected to a static contact seat of the arc blowout chamber.
  • the handle passes through a handle penetration hole and is hinged to the tripping mechanism; and the handle penetration hole is disposed on one side of the insulating case.
  • the insulating case is a cuboid
  • the wiring terminal portion is disposed at the same side or opposite side of the handle, and longitudinal height of the wiring terminal portion is less than or equal to longitudinal height of the part portion.
  • a specific structure of the thermal magnetic circuit breaker is the same as that of the specific embodiment of the thermal magnetic circuit breaker described in the foregoing, and is not repeatedly described here.
  • the thermal magnetic circuit breaker may be, but is not limited to, applied in a power distribution device having a short subrack.

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Claims (10)

  1. Thermomagnetischer Schutzschalter, der Folgendes umfasst: ein isolierendes Gehäuse (21) und einen Griff (29); wobei das isolierende Gehäuse (21) mit einem Bauelementabschnitt und einem Verdrahtungsanschlussabschnitt eingerichtet ist, wobei der Bauelementabschnitt eine Lichtbogenblaskammer (24), einen magnetischen Auslöser (28), einen Bimetallstreifen (27) und einen Auslösemechanismus (25) umfasst, der Verdrahtungsanschlussabschnitt einen ersten Verdrahtungsanschluss (22) und einen zweiten Verdrahtungsanschluss (23) umfasst, ein beweglicher Kontakt (243) der Lichtbogenblaskammer (24) mit dem Auslösemechanismus (25) über eine obere Endverbindungsstange des Auslösemechanismus (25) gekoppelt ist, der Auslösemechanismus (25) mit einem Ende einer Spule des magnetischen Auslösers (28) durch ein biegsames Verbindungselement verbunden ist, das andere Ende der Spule des magnetischen Auslösers (28) mit dem Bimetallstreifen (27) und einem Ende des zweiten Verdrahtungsanschlusses (23) über ein biegsames Verbindungselement (26) verbunden ist und ein Ende des ersten Verdrahtungsanschlusses (22) mit einer statischen Kontaktaufnahme (241) der Lichtbogenblaskammer (24) verbunden ist; der Griff (29) durch ein Griffeintrittsloch (211) hindurchtritt und mit dem Auslösemechanismus (25) gelenkig verbunden ist; und das Griffeintrittsloch (211) auf einer Seite des isolierenden Gehäuses (21) angeordnet ist; und wobei
    das isolierende Gehäuse (21) ein Quader ist, der Verdrahtungsanschlussabschnitt an derselben Seite oder gegenüberliegenden Seite des Griffs (29) angeordnet ist und die Höhe in Längsrichtung des Verdrahtungsanschlussabschnitts kleiner als die oder gleich der Höhe in Längsrichtung des Bauelementabschnitts ist.
  2. Thermomagnetischer Schutzschalter nach Anspruch 1, wobei wenigstens an einer Seite von anderen Seiten des isolierenden Gehäuses (21), außer der Seite, an der der Verdrahtungsanschlussabschnitt angeordnet ist, ein Befestigungsschraubenloch (212) angeordnet ist.
  3. Thermomagnetischer Schutzschalter nach Anspruch 1, wobei wenigstens an einer Seite von anderen Seiten des isolierenden Gehäuses (21), außer der Seite, an der der Verdrahtungsanschlussabschnitt angeordnet ist, ein Führungsschienenschlitz (214) angeordnet ist.
  4. Thermomagnetischer Schutzschalter nach Anspruch 1, wobei der erste Verdrahtungsanschluss (22) und der zweite Verdrahtungsanschluss (23) Folgendes sind: Kupfer-Verdrahtungsanschlüsse oder Aluminium-Verdrahtungsanschlüsse.
  5. Thermomagnetischer Schutzschalter nach Anspruch 1, wobei der erste Verdrahtungsanschluss (22) und der zweite Verdrahtungsanschluss (23) Folgendes sind: Käfiganschlüsse, bolzenartige Verdrahtungsanschlüsse, Einsteckbolzenanschlüsse, Einsteck-Q.C-Anschlüsse oder busartige Anschlüsse.
  6. Thermomagnetischer Schutzschalter nach Anspruch 1, wobei an der Seite, an der das Griffeintrittsloch (211) angeordnet ist, ein Zustandsüberwachungsdrahteintrittsloch (213) angeordnet ist;
    der thermomagnetische Schutzschalter ferner einen ersten Zustandsüberwachungsdraht (31) und einen zweiten Zustandsüberwachungsdraht (32) umfasst; und
    ein Ende des ersten Zustandsüberwachungsdrahts (31) durch das Zustandsüberwachungsdrahteintrittsloch (212) hindurchtritt,
    das andere Ende des ersten Zustandsüberwachungsdrahts (31) mit dem ersten Verdrahtungsanschluss (22) verbunden ist, ein Ende des zweiten Zustandsüberwachungsdrahts (32) durch das Zustandsüberwachungsdrahteintrittsloch (213) hindurchtritt und das andere Ende des zweiten Zustandsüberwachungsdrahts (32) mit dem zweiten Verdrahtungsanschluss (23) verbunden ist.
  7. Thermomagnetischer Schutzschalter nach Anspruch 6, wobei an der Seite, an der das Griffeintrittsloch (211) angeordnet ist, eine Überwachungsvorrichtung (33) angeordnet ist, und die Überwachungsvorrichtung (33) mit dem ersten Zustandsüberwachungsdraht (31) und dem zweiten Zustandsüberwachungsdraht (32) verbunden ist.
  8. Stromverteilungseinrichtung, die einen Stromgenerator, einen Transformator, eine Stromleitung und einen thermomagnetischen Schutzschalter nach einem der vorhergehenden Ansprüche 1 bis 7 umfasst.
  9. Stromverteilungseinrichtung nach Anspruch 8, wobei an der Seite, die zu dem thermomagnetischen Schutzschalter gehört und an der das Griffeintrittsloch (211) angeordnet ist, ein Zustandsüberwachungsdrahteintrittsloch (213) angeordnet ist;
    der thermomagnetische Schutzschalter ferner einen ersten Zustandsüberwachungsdraht (31) und einen zweiten Zustandsüberwachungsdraht (32) umfasst; und
    ein Ende des ersten Zustandsüberwachungsdrahts (31) durch das Zustandsüberwachungsdrahteintrittsloch (213) hindurchtritt, das andere Ende des ersten Zustandsüberwachungsdrahts (31) mit dem ersten Verdrahtungsanschluss (22) verbunden ist, ein Ende des zweiten Zustandsüberwachungsdrahts (32) durch das Zustandsüberwachungsdrahteintrittsloch (213) hindurchtritt und das andere Ende des zweiten Zustandsüberwachungsdrahts (32) mit dem zweiten Verdrahtungsanschluss (23) verbunden ist.
  10. Stromverteilungseinrichtung nach Anspruch 9, wobei an der Seite, die zu dem thermomagnetischen Schutzschalter gehört und an der das Griffeintrittsloch (211) angeordnet ist, eine Überwachungsvorrichtung (33) angeordnet ist und die Überwachungsvorrichtung (33) mit dem ersten Zustandsüberwachungsdraht (31) und dem zweiten Zustandsüberwachungsdraht (32) verbunden ist.
EP12819048.5A 2012-03-13 2012-10-30 Magnetischer wärmeschutzschalter und energieverteilungsvorrichtung Active EP2731122B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210064745.5A CN102610456B (zh) 2012-03-13 2012-03-13 热磁式断路器及配电设备
PCT/CN2012/083716 WO2013135049A1 (zh) 2012-03-13 2012-10-30 热磁式断路器及配电设备

Publications (3)

Publication Number Publication Date
EP2731122A1 EP2731122A1 (de) 2014-05-14
EP2731122A4 EP2731122A4 (de) 2015-03-11
EP2731122B1 true EP2731122B1 (de) 2016-09-21

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Application Number Title Priority Date Filing Date
EP12819048.5A Active EP2731122B1 (de) 2012-03-13 2012-10-30 Magnetischer wärmeschutzschalter und energieverteilungsvorrichtung

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EP (1) EP2731122B1 (de)
CN (1) CN102610456B (de)
WO (1) WO2013135049A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102610456B (zh) * 2012-03-13 2015-11-25 华为技术有限公司 热磁式断路器及配电设备
CN113539755A (zh) * 2020-04-17 2021-10-22 北京人民电器厂有限公司 一种断路器
CN112151330B (zh) * 2020-10-27 2023-07-07 贵州众联新能源科技有限公司 一种非脱扣式塑壳断路器

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CN102610456B (zh) * 2012-03-13 2015-11-25 华为技术有限公司 热磁式断路器及配电设备

Also Published As

Publication number Publication date
EP2731122A1 (de) 2014-05-14
EP2731122A4 (de) 2015-03-11
WO2013135049A1 (zh) 2013-09-19
CN102610456B (zh) 2015-11-25
CN102610456A (zh) 2012-07-25

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