EP0024000B1 - Niederspannungsschütz mit dreiphasigem Kontaktsatz - Google Patents

Niederspannungsschütz mit dreiphasigem Kontaktsatz Download PDF

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Publication number
EP0024000B1
EP0024000B1 EP80104436A EP80104436A EP0024000B1 EP 0024000 B1 EP0024000 B1 EP 0024000B1 EP 80104436 A EP80104436 A EP 80104436A EP 80104436 A EP80104436 A EP 80104436A EP 0024000 B1 EP0024000 B1 EP 0024000B1
Authority
EP
European Patent Office
Prior art keywords
bellows
low
contactor
contact members
voltage contactor
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.)
Expired
Application number
EP80104436A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0024000A1 (de
Inventor
Günther Bialkowski
Gerhard Dr. Dipl.-Ing. Peche
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Priority to AT80104436T priority Critical patent/ATE4260T1/de
Publication of EP0024000A1 publication Critical patent/EP0024000A1/de
Application granted granted Critical
Publication of EP0024000B1 publication Critical patent/EP0024000B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • H01H2033/024—Details particular to three-phase circuit breakers with a triangular setup of circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6668—Operating arrangements with a plurality of interruptible circuit paths in single vacuum chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers

Definitions

  • the invention relates to a low-voltage contactor according to the preamble of patent claim 1.
  • a vacuum switch with these features is known from DE-B2-2358141.
  • the fixed contact pieces are attached to the housing via resilient power supply lines and insulating bushings, while the movable contact pieces sit on connection bolts, each of which is surrounded by a bellows, and the connection bolts and the spring bellows are located in the insulating ' bushings ' .
  • This structure is complex since the insulating bushings have to be large and solid to absorb the mechanical tensile forces of the springs and the pressure of the vacuum.
  • Low-voltage contactors up to 1000 V for the operational switching of motors, capacitors and other electrical consumers normally switch with moving contact pieces in an air-filled arc chamber.
  • the switch-off properties of the contactors are determined by the design of the arc chamber.
  • the contactors are generally driven electromagnetically. If they are operated at the nominal current, the burn-off of the contact pieces increases considerably, so that the contact sets and arcing chambers have to be replaced several times over the course of the contactors' service life.
  • the maintenance of the air contactors not only causes costs, but also a shutdown of the switched facilities, which usually causes much higher costs.
  • US-A-3 023 290 shows a relay in which three pairs of contacts are housed in a vacuum vessel. This arrangement is not suitable for switching high currents, since both contact pieces of each contact pair are rigidly connected to the vacuum housing made of glass or ceramic, since the housing therefore absorbs the mechanical forces, in particular the inrush current, and must therefore be designed and dimensioned in a very complex manner.
  • the present invention is based on the object of specifying a cost-saving low-voltage contactor with a three-phase contact set, the service life of which corresponds approximately to or is greater than that of the mechanical contactor drive.
  • the contact erosion can be kept so low that it no longer plays a decisive role in the life of the contactor.
  • the service life of the contact pieces and the mechanically stressed bellows can largely be made the same as that of the mechanical contactor drive.
  • the constructive features allow a cost-saving construction of the intrinsically more complex vacuum switching tube compared to air contactors.
  • tubular insulators are inexpensive; they only surround the current-carrying connecting bolts of the contact pieces and can all have the same dimensions.
  • the discharge spaces around the contact piece pairs are separated from one another by sheets which are soldered in a star shape into the vacuum switching tube or by separate steam shield cylinders.
  • the one housing cover is attached to a protective wall, the drive plunger is passed through the protective wall and is actuated from the other side thereof.
  • the vacuum switching tube and the bellows with bottom are advantageously made of deep-drawn steel.
  • the star-shaped soldered sheets and steam shield cylinders are preferably made of copper. It is best to use tungsten copper or molybdenum copper or cobalt copper as the contact material at least on the end face of the contact pieces.
  • 1 is a protective wall. With the essentially cylindrical wall of a vacuum switching tube housing 2 is designated. On one side, the vacuum switch tube housing '2 is closed with a first cover. This consists of an annular flange 4 which is fastened to the protective wall 1 with three bolts 5. On' on the other hand, the vacuum switching tube housing 2 is closed with a second cover 6.
  • the vacuum-tight seal on the one side of the housing is provided by a bellows 7, which is attached on the one hand to the flange 4 on one edge of the housing wall 3 and is closed on the other side by a bellows base 8.
  • the evacuated discharge space of the vacuum switching tube is located between this bellows base 8, the wall 3 and the cover 6.
  • the bellows base 8 is drawn up like a pot to the discharge space so that it can also serve as a side shield for evaporated contact material.
  • Three movable contact pieces 9 are attached to the bellows base 8. Their connecting bolts lead through the protective wall 1 and are vacuum-tightly connected to a respective end flange 10 of a tubular insulator 11. They then lead through the tubular isolators 11 and through openings in the bellows base 8 into the discharge space. At the end there they wear contact plates.
  • the tubular insulators 11 are vacuum-tightly connected to the bellows base 8 on their other side.
  • Three corresponding fixed contact pieces 12 are attached to the cover 6 of the housing. Their connecting bolts are vacuum-tightly connected to a connecting flange 1'3 of tubular insulators 14, lead through the insulators 14 and through openings in the cover 6 of the housing into the discharge space and carry contact plates at the end there. At their respective other ends, the insulators 14 are connected vacuum-tight to the cover 6 of the housing.
  • the cover 6 also carries an evacuation nozzle 15.
  • a drive plunger 16 is connected centrally to the bellows base 8 and, like the movable contact pieces 9, extends through the protective wall 1.
  • connection bolts of the fixed contact pieces 1'2 namely fixed clamps 17 and cable lugs 18 for a flexible cable connection.
  • the contact plates of the fixed and movable contact pieces 1'2 and 9 face each other.
  • FIG. 2 which shows an axial view of the discharge space with the cover 6 removed and without fixed contact pieces 12, the three contact pieces 9 and 12 are arranged at the corners of an equilateral triangle around the housing axis.
  • the discharge space is subdivided by star-shaped soldered sheets 19 which shield the individual discharge spaces between the mutually opposing contact pairs 9, 12 and around them.
  • the possibility of providing three separate steam shield cylinders 20 around each contact pair 9, 12 is shown in dash-dot lines in FIG. 2.
  • the proposed solution is an extremely economical concept for a low-voltage contactor.
  • simple parts such as the tubular insulators 11, 14, the manufacturing effort is relatively low despite the complicated vacuum concept.
  • the decisive factor is the balanced service life of the parts involved. Since the stroke in such a low-voltage vacuum switching tube is only 1 to 5 mm, the bellows 7 is so little mechanically stressed that it also has a long service life.
  • WCu, MoCu or CoCu are expediently used as contact material.
  • the steam shield cylinders 20 or sheets 19 are made of copper
  • the vacuum switch tube housing 2 and bellows base 8 are made of deep-drawn steel.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
EP80104436A 1979-08-09 1980-07-28 Niederspannungsschütz mit dreiphasigem Kontaktsatz Expired EP0024000B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104436T ATE4260T1 (de) 1979-08-09 1980-07-28 Niederspannungsschuetz mit dreiphasigem kontaktsatz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2932407 1979-08-09
DE2932407A DE2932407C2 (de) 1979-08-09 1979-08-09 Niederspannungsschütz mit dreiphasigem Kontaktsatz

Publications (2)

Publication Number Publication Date
EP0024000A1 EP0024000A1 (de) 1981-02-18
EP0024000B1 true EP0024000B1 (de) 1983-07-20

Family

ID=6078095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104436A Expired EP0024000B1 (de) 1979-08-09 1980-07-28 Niederspannungsschütz mit dreiphasigem Kontaktsatz

Country Status (12)

Country Link
US (1) US4306129A (ja)
EP (1) EP0024000B1 (ja)
JP (1) JPS5628423A (ja)
AR (1) AR222240A1 (ja)
AT (1) ATE4260T1 (ja)
AU (1) AU520011B2 (ja)
BR (1) BR8005006A (ja)
CA (1) CA1141410A (ja)
DE (1) DE2932407C2 (ja)
ES (1) ES8104634A1 (ja)
MX (1) MX148792A (ja)
ZA (1) ZA804826B (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304803A1 (de) * 1983-02-11 1984-08-16 Siemens AG, 1000 Berlin und 8000 München Vakuumschalter, insbesondere mittelspannungs-lasttrennschalter
US4587390A (en) * 1985-01-07 1986-05-06 Golden Gate Switchboard Co. Vacuum circuit breaker
US6156989A (en) * 1999-09-30 2000-12-05 Rockwell Technologies, Llc Multi-phase vacuum switch arrangement including an electromagnet actuating mechanism
JP2002152926A (ja) * 2000-11-09 2002-05-24 Mitsubishi Electric Corp ガス絶縁開閉装置
JP2007014087A (ja) * 2005-06-29 2007-01-18 Hitachi Ltd 真空絶縁スイッチギヤ
CN102420072B (zh) * 2011-08-12 2015-04-15 王永法 一种三相共体的真空灭弧室
CN111009443A (zh) * 2019-12-11 2020-04-14 上海平高天灵开关有限公司 一种可变形导电连接机构

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2138191A (en) * 1936-02-03 1938-11-29 John D Noyes Electric circuit controlling device
US2906841A (en) * 1956-01-03 1959-09-29 Jennings Radio Mfg Corp Three-phase vacuum switch
NL216587A (ja) * 1956-04-24
US3023290A (en) * 1958-08-18 1962-02-27 Jennings Radio Mfg Corp Relay
US2979587A (en) * 1958-10-28 1961-04-11 Jennings Radio Mfg Corp Vacuum electric switch
US3036180A (en) * 1959-05-11 1962-05-22 Gen Electric Contact structure for a vacuum-type circuit interrupter
DE1100780B (de) * 1959-07-17 1961-03-02 Siemens Ag Kurzschliesser zur UEberbrueckung von Stoerlichtboegen in elektrischen Mittel- oder Hochspannungsanlagen
FR1372239A (fr) * 1963-10-16 1964-09-11 Ass Elect Ind Interrupteur dans le vide à contacts multiples
DE1230884B (de) * 1964-06-01 1966-12-22 Jennings Radio Mfg Corp Drei-Phasen-Vakuum-Schalter
GB1194674A (en) * 1966-05-27 1970-06-10 English Electric Co Ltd Vacuum Type Electric Circuit Interrupting Devices
US3355564A (en) * 1966-06-03 1967-11-28 John W Ranheim Vacuum-type circuit interrupter
CH452652A (de) * 1967-08-23 1968-03-15 Oerlikon Maschf Vakuumschalter
DE1901067A1 (de) * 1968-04-17 1969-10-23 Inst Prueffeld Fuer Elek Sche Vakuumschalter
US3670123A (en) * 1971-04-29 1972-06-13 Joslyn Mfg & Supply Co Multi-point to common point dead tank switch having vacuum insulated contacts and vacuum insulated terminals
JPS5322856B2 (ja) * 1972-06-22 1978-07-11
US3814881A (en) * 1972-07-21 1974-06-04 Westinghouse Electric Corp Vacuum interrupters enclosed in vacuum housings
NL153713B (nl) * 1972-10-27 1977-06-15 Hazemeijer Bv Vacuuemschakelaar met twee of meer schakeleenheden.
DE2254623C3 (de) * 1972-11-08 1979-09-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Durchdringungsverbundmetall als Kontaktwerkstoff für Vakuumschalter mit hohen Schaltzahlen
DD108407A1 (ja) * 1973-12-20 1974-09-12
US3960554A (en) * 1974-06-03 1976-06-01 Westinghouse Electric Corporation Powdered metallurgical process for forming vacuum interrupter contacts
DD134819A1 (de) * 1978-02-13 1979-03-21 Bahder Hans Peter Vakuumschalter mit zurueckversetztem kondensationsschirm

Also Published As

Publication number Publication date
ES494113A0 (es) 1981-03-16
AR222240A1 (es) 1981-04-30
AU6117780A (en) 1981-02-12
JPS5628423A (en) 1981-03-20
US4306129A (en) 1981-12-15
ZA804826B (en) 1982-02-24
ATE4260T1 (de) 1983-08-15
CA1141410A (en) 1983-02-15
DE2932407A1 (de) 1981-02-19
MX148792A (es) 1983-06-17
AU520011B2 (en) 1982-01-07
DE2932407C2 (de) 1982-05-27
EP0024000A1 (de) 1981-02-18
ES8104634A1 (es) 1981-03-16
BR8005006A (pt) 1981-02-24

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