EP0168568A2 - Sectionneur, en particulier sectionneur monocolonne, à pantographe - Google Patents

Sectionneur, en particulier sectionneur monocolonne, à pantographe Download PDF

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Publication number
EP0168568A2
EP0168568A2 EP85105397A EP85105397A EP0168568A2 EP 0168568 A2 EP0168568 A2 EP 0168568A2 EP 85105397 A EP85105397 A EP 85105397A EP 85105397 A EP85105397 A EP 85105397A EP 0168568 A2 EP0168568 A2 EP 0168568A2
Authority
EP
European Patent Office
Prior art keywords
contact piece
isolating
auxiliary
contact system
piece
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
EP85105397A
Other languages
German (de)
English (en)
Other versions
EP0168568B1 (fr
EP0168568A3 (en
Inventor
Alfred Dr.-Ing. Hartig
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.)
Ruhrtal Elektrizitatsgesellschaft Hartig GmbH and Co
Original Assignee
Ruhrtal Elektrizitatsgesellschaft Hartig GmbH and Co
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 Ruhrtal Elektrizitatsgesellschaft Hartig GmbH and Co filed Critical Ruhrtal Elektrizitatsgesellschaft Hartig GmbH and Co
Priority to AT85105397T priority Critical patent/ATE37118T1/de
Publication of EP0168568A2 publication Critical patent/EP0168568A2/fr
Publication of EP0168568A3 publication Critical patent/EP0168568A3/de
Application granted granted Critical
Publication of EP0168568B1 publication Critical patent/EP0168568B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H9/14—Adaptation for built-in safety spark gaps
    • 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
    • H01H31/34—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching
    • H01H31/36—Contact moved by pantograph

Definitions

  • the invention relates to an isolating switch, in particular a single-column scissor-type isolating switch, with a main contact system and an auxiliary contact system, the main contact system consisting of at least one main contact piece provided on isolating scissors or the like and at least one mating contact piece provided on a busbar or the like the auxiliary contact system has at least one auxiliary contact piece assigned to the counter contact piece, preferably running parallel to the counter contact piece, insulated from the counter contact piece and interacting with the main contact piece, and an isolating contact system with two isolating contact pieces arranged electrically between the counter contact piece and the auxiliary contact piece, the first isolating contact piece further comprising the counter contact piece and the second isolating contact piece is insulated from the mating contact piece and is assigned to the auxiliary contact piece, furthermore initially after opening the main contact system the isolating contact system and only then opens the auxiliary contact system, and finally a potential equalization resistor is effective between the mating contact piece and the auxiliary
  • Disconnectors are designed based on their principle and in accordance with the regulations applicable to their use for almost de-energized switching; Visible isolating paths are to be implemented with isolating switches. Disconnectors are disconnected by assigned circuit breakers. Disconnectors are also used when, for example, different busbars have to be switched among themselves. In principle, such switching operations are de-energized, but so-called commutation currents flow at relatively low voltages. In addition, the occurrence of displacement currents cannot be avoided in many cases when switching is basically de-energized. As a result, system-related and unavoidable switch-on and switch-off arcs sometimes occur even with disconnectors that generally switch off.
  • disconnectors In the closed state, disconnectors must be able to carry very high currents, especially those that are short-term in the event of a short circuit, namely, up to the isolation by the assigned circuit breaker, occurring currents.
  • the main contact system of disconnectors consisting of at least one main contact piece and at least one counter contact piece must therefore always be in perfect condition.
  • the disconnector from which the invention is based has an auxiliary contact system in addition to the main contact system (cf. DE-PS 32 10 155, DE-OS 32 35 353 and the literature reference " Siemens Energytechnik "6/83, 5th year, November / December 1983, pages 350 to 353, especially page 353).
  • the isolating switch from which the teaching of the invention is based that the actual isolating distance of the auxiliary contact system, that is to say the area in which the on and off arcs are to occur, is realized in a special isolating contact system, the isolating contact system being the main contact piece or, as stated at the beginning, can be assigned to the mating contact piece.
  • the invention therefore also relates to an isolating switch in which the isolating contact system is assigned to the main contact piece, even if an isolating switch is described at the beginning in which the isolating contact system is assigned to the counter-contact piece.
  • the equipotential bonding resistor prevents the auxiliary contact piece from "hanging" in the air when the disconnector is open. If, in a first approximation, the auxiliary contact piece is functionally insulated from the counter contact piece, the auxiliary contact piece immediately assumes the potential of the counter contact piece via the equipotential bonding resistor when the disconnector is open.
  • the invention is based on the object of designing and developing the isolating switch described above so that even if considerable potential differences occur between the mating contact piece and the auxiliary contact piece and thus at the equipotential bonding resistor when switching on, the equipotential bonding resistor is not destroyed.
  • the circuit breaker according to the invention in which the previously derived and described object is achieved, is initially and essentially characterized in that a spark gap which limits its voltage stress is connected in parallel to the equipotential bonding resistor. This ensures that if there is a correspondingly high potential difference between the mating contact piece and the auxiliary contact piece and thus at the equipotential bonding resistor, there is a deliberate arcing over the spark gap, so that the equipotential bonding resistor is not overstressed in terms of voltage.
  • the spark gap in such a way that it has a small flashover delay. Since a spark gap has a larger flashover delay, the less the field strength that is set in it is constant - a peak-to-peak spark gap has a relatively large flashover delay - the goal of a small flashover delay can be achieved by designing the spark gap that there is a largely constant field strength in it.
  • the spark gap is created by two flashovers that cross the connection ends of the equipotential bonding resistor electrodes is formed. If the equipotential bonding resistor is cylindrical, it is advisable to make the flashover electrodes pot-shaped or bell-shaped. This "resistance encapsulation" means that the equipotential bonding resistor is provided with a shield, particularly in the area of its particularly endangered connection ends.
  • FIG. 1 shows a schematic illustration and a detail of an isolating switch 1 with an isolating scissor 2, which is only half indicated for reasons of simplification.
  • a main contact system 3 and an auxiliary contact system 4 can be seen 6 provided mating contact piece 7.
  • the auxiliary contact system 4 has auxiliary contact pieces 8 assigned to the mating contact piece 7, running parallel to the mating contact piece 7, insulated from the mating contact piece 7 and interacting with the main contact pieces 5 and an isolating contact system 9, which is arranged electrically between the mating contact piece 7 and the auxiliary contact pieces 8, with two isolating contact pieces 10, 11.
  • the first isolating contact piece 10 is assigned to the mating contact piece 7, which is otherwise attached to the busbar 6 via support rings 12, while the second isolating contact piece 11 is insulated from the mating contact piece 7 and is assigned to the auxiliary contact pieces 8. Otherwise, the isolating contact pieces 10, 11 are each provided with a contact head 13 made of erosion-resistant material.
  • the isolating contact pieces 10, 11 are spring-loaded in the opening direction, for which purpose corresponding spring elements 14 are provided.
  • auxiliary contact pieces 8 and the isolating contact pieces 10, 11 are fastened to the mating contact piece 7 by means of two supports 15 made of electrically insulating material.
  • the auxiliary contact pieces 8 are articulated to the carrier 15 via pivot levers 16.
  • the pivot levers 16, like the isolating contact pieces 10, 11, are spring-loaded, namely provided with spring elements 17.
  • FIGS. 2 and 3 clearly show that the complete auxiliary contact system 4 can be removed from the mating contact piece 7 or placed on the mating contact piece 7.
  • the carriers 15 each consist of two half shells 19 connected to one another by screws 18.
  • a potential equalization resistor 20 is provided between the mating contact piece 7 and the auxiliary contact pieces 8.
  • the equipotential bonding resistor 20 is connected in parallel with a spark gap 21 that limits its voltage stress.
  • the spark gap 21 has a relatively small rollover delay.
  • the spark gap 21 is designed so that a largely constant field strength is established in it.
  • the spark gap 21 is formed by two flashover electrodes 24, 25 spanning the connection ends 22, 23 of the equipotential bonding resistor 20. Since the equipotential bonding resistor 20 is cylindrical, the flashover electrodes 24, 25 are adapted in a pot-shaped manner to the equipotential bonding resistor 20.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
EP85105397A 1984-05-21 1985-05-03 Sectionneur, en particulier sectionneur monocolonne, à pantographe Expired EP0168568B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85105397T ATE37118T1 (de) 1984-05-21 1985-05-03 Trennschalter, insbesondere einsaeulenscherentrennschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418837 1984-05-21
DE3418837A DE3418837A1 (de) 1984-05-21 1984-05-21 Trennschalter, insbesondere einsaeulen-scherentrennschalter

Publications (3)

Publication Number Publication Date
EP0168568A2 true EP0168568A2 (fr) 1986-01-22
EP0168568A3 EP0168568A3 (en) 1986-11-05
EP0168568B1 EP0168568B1 (fr) 1988-09-07

Family

ID=6236430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105397A Expired EP0168568B1 (fr) 1984-05-21 1985-05-03 Sectionneur, en particulier sectionneur monocolonne, à pantographe

Country Status (3)

Country Link
EP (1) EP0168568B1 (fr)
AT (1) ATE37118T1 (fr)
DE (2) DE3418837A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019213320A1 (de) * 2019-09-03 2021-03-04 Siemens Energy Global GmbH & Co. KG Einsäulen-Trennschalter mit Vakuum-Schaltröhre als Hilfskontaktsystem

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1272172A (fr) * 1960-08-12 1961-09-22 Globe Union Inc Dispositif électrique combiné formant résistance et capacité avec parafoudre incorporé, notamment pour antennes de télévision
GB918666A (en) * 1960-04-20 1963-02-13 Welwyn Electric Ltd Improvements in electrical resistors
US3305694A (en) * 1964-05-12 1967-02-21 Welwyn Electric Ltd Electrical resistor with a parallel high voltage protective gap
DE3120129A1 (de) * 1981-02-18 1982-09-02 Sprecher & Schuh AG, 5001 Aarau, Aargau Hochspannungstrennschalter mit einer schere
DE3210155A1 (de) * 1982-03-19 1983-09-29 Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen Trennschalter, insbesondere einsaeulen-scherentrennschalter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2718188C3 (de) * 1977-04-23 1984-07-05 Dehn + Söhne GmbH + Co KG, 8500 Nürnberg Überspannungsschutzgerät
DE3235353A1 (de) * 1982-09-24 1984-03-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hochspannungstrennschalter mit vorkontakten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB918666A (en) * 1960-04-20 1963-02-13 Welwyn Electric Ltd Improvements in electrical resistors
FR1272172A (fr) * 1960-08-12 1961-09-22 Globe Union Inc Dispositif électrique combiné formant résistance et capacité avec parafoudre incorporé, notamment pour antennes de télévision
US3305694A (en) * 1964-05-12 1967-02-21 Welwyn Electric Ltd Electrical resistor with a parallel high voltage protective gap
DE3120129A1 (de) * 1981-02-18 1982-09-02 Sprecher & Schuh AG, 5001 Aarau, Aargau Hochspannungstrennschalter mit einer schere
DE3210155A1 (de) * 1982-03-19 1983-09-29 Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen Trennschalter, insbesondere einsaeulen-scherentrennschalter

Also Published As

Publication number Publication date
DE3418837A1 (de) 1985-11-21
ATE37118T1 (de) 1988-09-15
EP0168568B1 (fr) 1988-09-07
EP0168568A3 (en) 1986-11-05
DE3418837C2 (fr) 1987-10-29
DE3564886D1 (en) 1988-10-13

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