EP0772050A1 - Améliorations dans ou concernant les interrupteurs de compteurs - Google Patents

Améliorations dans ou concernant les interrupteurs de compteurs Download PDF

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Publication number
EP0772050A1
EP0772050A1 EP96115905A EP96115905A EP0772050A1 EP 0772050 A1 EP0772050 A1 EP 0772050A1 EP 96115905 A EP96115905 A EP 96115905A EP 96115905 A EP96115905 A EP 96115905A EP 0772050 A1 EP0772050 A1 EP 0772050A1
Authority
EP
European Patent Office
Prior art keywords
switch
meter
switch assembly
shunt
spring
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.)
Granted
Application number
EP96115905A
Other languages
German (de)
English (en)
Other versions
EP0772050B1 (fr
Inventor
Neil Rothwell
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.)
Landis and Gyr Ltd
Original Assignee
Siemens Measurements 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 Siemens Measurements Ltd filed Critical Siemens Measurements Ltd
Publication of EP0772050A1 publication Critical patent/EP0772050A1/fr
Application granted granted Critical
Publication of EP0772050B1 publication Critical patent/EP0772050B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0271—Bases, casings, or covers structurally combining a switch and an electronic component

Definitions

  • This invention relates to electricity meter switches and to electricity meters which embody them.
  • Modular meters of the kind described as aforesaid comprise a basic meter module which includes a mains electricity isolating switch effective to isolate a consumer circuit from a supply circuit.
  • the switch may be manually operated and/or it may be operated by an actuator in an 'add-on' module, fitted to the basic module to extends its functionality.
  • the basic module may include for example a manually operated switch and be converted to a pre-payment meter by the addition of an 'add-on' module, which is arranged to receive electricity credit tokens and which includes a switch actuator operable automatically when credit is exhausted to cause the switch to disconnect a consumer from an electricity supply.
  • One object of this invention therefore is to satisfy these requirements.
  • a switch assembly for an electricity meter comprises two parts, one of which parts includes a fixed contact and a meter output terminal and the other of which parts includes a moving contact and a meter input terminal, the moving contact being coupled to the input terminal via a conductive spring on which it is supported and which serves in use both to carry switch current and to bias the moving contact towards the fixed contact, and via a meter shunt adapted so as to receive in use, sensor conductors so that current supplied via the switch from the input terminal to a consumer via the output terminal can be sensed for measurement purposes.
  • the switch assembly may form a part of a single pole switch.
  • the shunt may comprise strip metal to which a strip metal input terminal and a strip metal spring are electrically connected, in spaced apart relationship.
  • the spring may include between the moving contact and the shunt a narrowed portion to facilitate spring flexure without fracture at a junction with the shunt.
  • the output terminal may be formed from metal strip, one end of which is arranged to serve as the output terminal and the other end of which is adapted to define an electrical socket connector for receiving a complimentary plug of a meter 'add-on' module, the fixed contact being supported by the metal strip at a position intermediate between its ends.
  • the input and output terminals may be fabricated from flat copper strip material; the shunt and the spring may be fabricated from copper alloy strip material, not necessarily of the same composition, and the fixed and moving contacts may comprise silver alloy material.
  • the input and output terminals may be supported in spaced apart relationship within a meter housing so that flat strip material of respective terminals lies co-planar, both terminals being bent orthogonally of this plane so that the moving contact aligns with the fixed contact to facilitate switch operation and with a switch actuator which in use is used to effect switch operation against the biasing force of the spring.
  • the flat strip material of the output terminal may be formed so that the socket connector extends in planes generally parallel with the output terminal.
  • a contact assembly for a single pole meter switch comprises two parts 1 and 2.
  • the part 1 includes a flat copper metal strip input terminal 3, which is bent orthogonally and which is electrically and mechanically connected by a means of brazing points 4 to a flat copper alloy shunt 5.
  • the shunt 5 is connected by brazing points 6 to a copper alloy leaf spring 7 which supports a moving switch contact 8.
  • the parts may first be 'part pierced', so that they mutually locate.
  • the shunt 5 includes grooves 9 to which conductors are connected which couple the shunt to a measurement circuit (not shown). Grooves 10 are also provided in which conductors are soldered which serve to provide power for other parts of the electricity meter.
  • a narrowed neck 11 is formed between the shunt 5 and the moving contact 8.
  • the moving contact 8 is arranged to co-operate with a fixed contact 12, which is supported on a copper strip output terminal 13 which is bent orthogonally so that the fixed and moving contacts 12 and 8 respectively align.
  • Strip material from which the output terminal 13 formed is provided at an end thereof remote from the terminal 13, with a spring connector 14, as shown in Figure 2, which, as will hereinafter be explained, serves to provide electrical connection via a complimentary plug part (not shown) of an 'add-on' module (not shown).
  • the terminals 3 and 13 are arranged to lie flat in a housing body 15 so that they are mutually parallel and lie in substantially the same plane.
  • input and output conductors are introduced through apertures 16 and 17 respectively in the housing 15 and clamped into position by means of screws 18 against the input and output terminals 3 and 13 respectively.
  • Apertures 19 and 19a in the housing are provided for input and output neutral conductors respectively, which are secured by means of clamping screws 20. Connection of the neutral conductors is not central to the present invention, since the meter incorporates single pole switching only.
  • a mechanical switch actuator 21 is provided which is arranged to effect switch operation so as to open or close the contacts 8 and 12 against the biasing force provided by the leaf spring 7. Additionally the switch may be operated by an actuator (not shown), which is contained in an 'add-on' module (not shown) fitted to the basic meter module to extend functionality, as described in our co-pending patent applications.
  • the actuator (not shown) is arranged to operate in the direction of an arrow 22 so as to make contact with a switch operating member 23 which operates through a lever 24 to effect switch operation in a manner similar to operation as effected by the switch actuator 21.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Push-Button Switches (AREA)
EP96115905A 1995-10-31 1996-10-04 Améliorations dans ou concernant les interrupteurs de compteurs Expired - Lifetime EP0772050B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9522284 1995-10-31
GB9522284A GB2306676B (en) 1995-10-31 1995-10-31 Improvements in or relating to meter switches

Publications (2)

Publication Number Publication Date
EP0772050A1 true EP0772050A1 (fr) 1997-05-07
EP0772050B1 EP0772050B1 (fr) 2003-04-16

Family

ID=10783168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115905A Expired - Lifetime EP0772050B1 (fr) 1995-10-31 1996-10-04 Améliorations dans ou concernant les interrupteurs de compteurs

Country Status (6)

Country Link
EP (1) EP0772050B1 (fr)
AU (1) AU721585B2 (fr)
DE (1) DE69627449T2 (fr)
GB (1) GB2306676B (fr)
IL (1) IL119395A0 (fr)
ZA (1) ZA968443B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793030A1 (fr) * 1999-04-30 2000-11-03 Schneider Electric Ind Sa Dispositif de controle d'energie a prepaiement comportant un shunt de mesure
CN101813717A (zh) * 2010-04-30 2010-08-25 溧阳市华鹏电力仪表有限公司 防弱电连接片转动的端钮盒
CN107015039A (zh) * 2017-05-22 2017-08-04 杭州德创能源设备有限公司 一种计量表计转换插接模块
US20180172736A1 (en) * 2016-12-21 2018-06-21 Itron, Inc. Multi-piece current shunt with conductive channel for uniform current flow
US10401392B2 (en) 2016-12-21 2019-09-03 Itron, Inc. Shunt thermocouple
EP3855191A1 (fr) * 2020-01-14 2021-07-28 Kamstrup A/S Compteur d'électricité avec résistance de mesure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE535817T1 (de) * 2008-09-29 2011-12-15 Emh Metering Gmbh & Co Kg Elektronischer elektrizitätszähler
DE102009060577B4 (de) * 2009-12-23 2012-04-26 Hora-Werk Gmbh Stromzählerklemme und Verfahren zur Herstellung einer Stromzählerklemme

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2070862A (en) * 1980-03-03 1981-09-09 Bosch Gmbh Robert Electrical switch
GB2128410A (en) * 1982-10-07 1984-04-26 Gen Electric Co Plc Contact lever springs
EP0598521A2 (fr) * 1992-11-16 1994-05-25 THE GENERAL ELECTRIC COMPANY, p.l.c. Compteur de consommation
EP0612081A1 (fr) * 1993-02-15 1994-08-24 Sagem Sa Eléments résistifs de mesure de courant et modules de raccordement et de mesure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584545A (en) * 1984-07-10 1986-04-22 Heinemann Electric Company Single section circuit breaker having a metering shunt
US4743875A (en) * 1986-07-22 1988-05-10 Westinghouse Electric Corp. Circuit breaker having a direct current measuring shunt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2070862A (en) * 1980-03-03 1981-09-09 Bosch Gmbh Robert Electrical switch
GB2128410A (en) * 1982-10-07 1984-04-26 Gen Electric Co Plc Contact lever springs
EP0598521A2 (fr) * 1992-11-16 1994-05-25 THE GENERAL ELECTRIC COMPANY, p.l.c. Compteur de consommation
EP0612081A1 (fr) * 1993-02-15 1994-08-24 Sagem Sa Eléments résistifs de mesure de courant et modules de raccordement et de mesure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793030A1 (fr) * 1999-04-30 2000-11-03 Schneider Electric Ind Sa Dispositif de controle d'energie a prepaiement comportant un shunt de mesure
CN101813717A (zh) * 2010-04-30 2010-08-25 溧阳市华鹏电力仪表有限公司 防弱电连接片转动的端钮盒
US20180172736A1 (en) * 2016-12-21 2018-06-21 Itron, Inc. Multi-piece current shunt with conductive channel for uniform current flow
WO2018118894A1 (fr) * 2016-12-21 2018-06-28 Itron, Inc. Dispositif de dérivation multi-pièces à canal conducteur permettant une circulation de courant uniforme
US10401392B2 (en) 2016-12-21 2019-09-03 Itron, Inc. Shunt thermocouple
US10788515B2 (en) 2016-12-21 2020-09-29 Itron, Inc. Multi-piece current shunt with conductive channel for uniform current flow
US11391759B2 (en) 2016-12-21 2022-07-19 Itron, Inc. Multi-piece current shunt with conductive channel for uniform current flow
CN107015039A (zh) * 2017-05-22 2017-08-04 杭州德创能源设备有限公司 一种计量表计转换插接模块
EP3855191A1 (fr) * 2020-01-14 2021-07-28 Kamstrup A/S Compteur d'électricité avec résistance de mesure

Also Published As

Publication number Publication date
DE69627449T2 (de) 2004-03-04
ZA968443B (en) 1997-05-02
GB9522284D0 (en) 1996-01-03
EP0772050B1 (fr) 2003-04-16
GB2306676A (en) 1997-05-07
DE69627449D1 (de) 2003-05-22
GB2306676B (en) 1999-12-08
AU7044796A (en) 1997-05-08
AU721585B2 (en) 2000-07-06
IL119395A0 (en) 1997-01-10

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