EP3413329A1 - Structure à câblage amélioré pour système de contact de commutateur double rotatif - Google Patents

Structure à câblage amélioré pour système de contact de commutateur double rotatif Download PDF

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Publication number
EP3413329A1
EP3413329A1 EP17746777.6A EP17746777A EP3413329A1 EP 3413329 A1 EP3413329 A1 EP 3413329A1 EP 17746777 A EP17746777 A EP 17746777A EP 3413329 A1 EP3413329 A1 EP 3413329A1
Authority
EP
European Patent Office
Prior art keywords
contact
fixed contact
rotary double
terminal screw
short
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.)
Withdrawn
Application number
EP17746777.6A
Other languages
German (de)
English (en)
Other versions
EP3413329A4 (fr
Inventor
Rui Tang
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.)
Shanghai Liangxin Electrical Co Ltd
Original Assignee
Shanghai Liangxin Electrical 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 Shanghai Liangxin Electrical Co Ltd filed Critical Shanghai Liangxin Electrical Co Ltd
Publication of EP3413329A1 publication Critical patent/EP3413329A1/fr
Publication of EP3413329A4 publication Critical patent/EP3413329A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/36—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having only two operative positions, e.g. relatively displaced by 180 degrees
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5855—Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/64—Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5855—Electric connections to or between contacts; Terminals characterised by the use of a wire clamping screw or nut
    • H01H2001/5861—Box connector with a collar or lug for clamping internal rail and external conductor together by a tightening screw

Definitions

  • the present invention relates to the field of disconnector technologies, and specifically, to an improved wiring structure of a contact system of a rotary double-break switch.
  • a disconnector is the most-used electric appliance in high-voltage switch electric appliances.
  • a main feature of the disconnector is that the disconnector has no arc extinguishing capacity and can close or open a circuit only when there is no load current.
  • the disconnector is used for all classes of voltages, and is used for changing a circuit connection or isolating a line or device from a power supply.
  • the disconnector has no breaking capacity and only can perform an operation after the line is closed by using another device.
  • the disconnector is usually provided with an interlock apparatus used for preventing a misoperation when a switch carries a load. Sometimes, a pin is required to prevent the switch from being turned off under a magnetic effect of a big fault.
  • a circuit breaker trips.
  • the disconnector plays a role of cutting off a low current or providing an obvious fracture, so as to ensure safety of a worker during repairing or corrective maintenance.
  • the unenclosed disconnector is directly exposed to the air, and an obvious fracture may be viewed when the disconnector is switched off, but the unenclosed disconnector is large in size and is relatively heavy.
  • the gas-insulated metal-enclosed disconnector is small in size and high in reliability, thereby is widely used.
  • the gas-insulated metal-enclosed disconnector usually includes three disconnector single-phases, and each disconnector single-phase includes a cylinder body. A moving contact, a fixed contact, and a driving mechanism that drives the moving contact to move are disposed in the cylinder body. Electrical driving is used for most driving mechanisms.
  • the gas-insulated metal-enclosed disconnector is enclosed, and therefore, a worker cannot directly observe and clearly sense whether the gas-insulated metal-enclosed disconnector is in a breaking state.
  • An objective of the present invention is to provide an improved wiring structure of a contact system of a rotary double-break switch to resolve the technical defect that a wiring direction of an existing rotary double-break disconnector is single.
  • a wiring manner is improved, so that a wiring direction of the contact system of the rotary double-break disconnector can be flexibly changed, thereby satisfying a requirement on field mounting of the disconnector.
  • the improved wiring structure of the contact system of the rotary double-break switch designed in the present invention includes a moving contact, a fixed contact, and a short-circuit busbar, where electrical connection between the moving contact and the fixed contact can be achieved during rotation, and the fixed contact is connected to the short-circuit busbar by using a terminal screw, so that the terminal screw can enable wire entry along a circumferential direction.
  • a mounting axis direction of the terminal screw is perpendicular to a principal axis of the moving contact.
  • the short-circuit busbar is of a shape of " ", two ends of the short-circuit busbar are provided with terminal screw mounting vias, the short-circuit busbar is locked to a tail end of the fixed contact by using the terminal screw, a head end of the fixed contact extends into a slot of the moving contact, and during rotation of the moving contact, a contact end can come into contact with the head end of the fixed contact to form electrical connection.
  • the tail end of the fixed contact is provided with a thread hole, and the head end of the fixed contact is connected to the tail end by using a connecting portion.
  • the head end of the fixed contact and the tail end are planar structures perpendicular to each other.
  • the moving contact can come into contact with the head end of the fixed contact to implement double-break.
  • the moving contact is mounted onto a coupling.
  • the moving contact, the fixed contact, and the short-circuit busbar are mounted onto a base.
  • a bottom surface of a wiring port at which the terminal screw is connected to the fixed contact tilts downward, so that a wiring angle of a connection wire inserted between the terminal screw and the fixed contact is increased.
  • the present invention provides an improved wiring structure of a contact system of a rotary double-break switch.
  • a wiring manner is changed, that is, the fixed contact is connected to the short-circuit busbar by using the terminal screw, so that the terminal screw can enable wire entry along a circumferential direction.
  • the wiring direction of the contact system of the rotary double-break disconnector can be flexibly changed, thereby satisfying a requirement on field mounting of the disconnector.
  • an improved wiring structure of a contact system of a rotary double-break switch includes: a moving contact 1, a fixed contact 2, and a short-circuit busbar 3. Electrical connection between the moving contact 1 and the fixed contact 2 can be achieved during rotation, the fixed contact 2 is connected to the short-circuit busbar 3 by using a terminal screw 4, and the terminal screw 4 can enable wire entry along a circumferential direction. In this embodiment, a wire enters from an outer side (the right side).
  • a mounting axis direction of the terminal screw 4 is perpendicular to a principal axis of the moving contact 1.
  • the moving contact 1, the fixed contact 2, and the short-circuit busbar 3 are mounted onto a base 6.
  • the short-circuit busbar 3 is of a shape of " ", two ends of the short-circuit busbar 3 are respectively a planar structure and parallel to each other, and the two ends are connected by using a rod or a plate structure therebetween. Each end is provided with a terminal screw mounting via 301. One end is locked to a tail end 203 of the fixed contact 2 by using the terminal screw 4 and can be used for external wiring (refer to FIG. 2 and FIG. 6 ). The other end 305 extends into a connection slot 8 of the base 6 and can be conveniently in communication with (in electrical connection to) another rotary double-break switch that is used in combination when required.
  • a head end 202 of the fixed contact 2 extends into a slot 101 of the moving contact 1, and a surface of the slot 101 is perpendicular to the principal axis of the moving contact 1. In this way, during rotation of the moving contact 1, a contact end 102 can come into contact with the head end 202 of the fixed contact 2 to form electrical connection.
  • the mounting via 301 is a gap, thereby facilitating connection.
  • an enclosed hole may alternatively be used.
  • a bottom surface 91 of a wiring port 9 at which the terminal screw 4 is connected to the fixed contact 2 tilts downward (towards a bottom surface of the base), so that different wiring angles between 0° and 45° of a connection wire inserted between the terminal screw 4 and the fixed contact 2 can be achieved, thereby increasing the wiring angle and facilitating wiring.
  • a high bottom surface of an existing switch is almost parallel to a surface of the base 6, and only one-direction wiring can be performed.
  • the tail end of the fixed contact 2 is provided with a thread hole 201, and the head end 202 of the fixed contact 2 is connected to the tail end 203 by using a connecting portion 204.
  • the planar head end 202 of the fixed contact 2 is perpendicular to a plane of the tail end 203 through a transition of the connecting portion 204, so that the terminal screw 4 can enable wire entry along a circumferential direction.
  • the moving contact 1 can come into contact with head ends 202 of two fixed contacts 2 to implement double-break (please explain the meaning of "double-break", and no explanation is required if "double-break” is a standard noun in the industry).
  • the moving contact 1 is mounted onto a coupling 5.
  • the improved wiring structure of the contact system of the rotary double-break switch provided in the present invention, a wiring manner is improved, and the fixed contact 2 is connected to the short-circuit busbar 3 by using the terminal screw 4, so that the terminal screw 4 can enable wire entry along the circumferential direction.
  • the wiring direction of the contact system of the rotary double-break disconnector can be flexibly changed, thereby satisfying a requirement on field mounting of the disconnector of the present invention at various positions.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP17746777.6A 2016-02-05 2017-01-18 Structure à câblage amélioré pour système de contact de commutateur double rotatif Withdrawn EP3413329A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610082913.1A CN107045959A (zh) 2016-02-05 2016-02-05 旋转式双断点开关接触系统接线改良结构
PCT/CN2017/071545 WO2017133457A1 (fr) 2016-02-05 2017-01-18 Structure à câblage amélioré pour système de contact de commutateur double rotatif

Publications (2)

Publication Number Publication Date
EP3413329A1 true EP3413329A1 (fr) 2018-12-12
EP3413329A4 EP3413329A4 (fr) 2019-09-11

Family

ID=59499344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17746777.6A Withdrawn EP3413329A4 (fr) 2016-02-05 2017-01-18 Structure à câblage amélioré pour système de contact de commutateur double rotatif

Country Status (5)

Country Link
EP (1) EP3413329A4 (fr)
JP (1) JP2019505085A (fr)
KR (1) KR102053070B1 (fr)
CN (1) CN107045959A (fr)
WO (1) WO2017133457A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107845535B (zh) * 2017-10-10 2024-05-14 上海良信电器股份有限公司 一种多极旋转式电气开关的短接方式及触头模块
CN108648941B (zh) * 2018-04-02 2024-05-17 国网冀北电力有限公司承德供电公司 隔离开关的静触头拆装工装及静触头安装方法、拆卸方法
CN109360752A (zh) * 2018-12-11 2019-02-19 中欧电气有限公司 一种多功能可视隔离开关
CN112635206B (zh) * 2020-11-24 2024-01-23 天津平高智能电气有限公司 一种开关柜及开关柜用静触头

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB952935A (en) * 1961-08-02 1964-03-18 Oak Mfg Co Rotary electric switch means
CN2821835Y (zh) * 2005-05-23 2006-09-27 杭州立得电机有限公司 一种模组化多段式开关
DK2482299T3 (da) * 2008-04-01 2014-01-13 Ewac Holding B V Elektrisk drejekontakt
ITMI20122175A1 (it) * 2012-12-19 2014-06-20 Bremas Ersce S P A Sezionatore, particolarmente per applicazioni fotovoltaiche.
CN204067146U (zh) * 2014-06-27 2014-12-31 森萨塔科技（常州）有限公司 旋转开关
CN205656997U (zh) * 2016-02-05 2016-10-19 上海良信电器股份有限公司 旋转式双断点开关接触系统接线改良结构

Also Published As

Publication number Publication date
WO2017133457A1 (fr) 2017-08-10
JP2019505085A (ja) 2019-02-21
CN107045959A (zh) 2017-08-15
EP3413329A4 (fr) 2019-09-11
KR20180108701A (ko) 2018-10-04
KR102053070B1 (ko) 2019-12-06

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