US2529145A - Pneumatic circuit breaker - Google Patents

Pneumatic circuit breaker Download PDF

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Publication number
US2529145A
US2529145A US625563A US62556345A US2529145A US 2529145 A US2529145 A US 2529145A US 625563 A US625563 A US 625563A US 62556345 A US62556345 A US 62556345A US 2529145 A US2529145 A US 2529145A
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US
United States
Prior art keywords
electrode
chamber
movable
movable electrode
auxiliary
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 - Lifetime
Application number
US625563A
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English (en)
Inventor
Fernier Bernard Marie Hil Paul
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.)
Ateliers de Constructions Electriques de Delle SA
Original Assignee
Ateliers de Constructions Electriques de Delle SA
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Application filed by Ateliers de Constructions Electriques de Delle SA filed Critical Ateliers de Constructions Electriques de Delle SA
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Publication of US2529145A publication Critical patent/US2529145A/en
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Expired - Lifetime 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle

Definitions

  • Fig. 1 shows, partly in in section, one embodiment of the invention ing the first stage of its operation
  • Fig. 2 is similar to Fig. -lbut shows the during another staged the operation
  • Fig. 3 is a cross-section of the'embodiment shown in Figs. 1 and 2 and illustrating more particularly the relatively movable arc-drawing con tacts I and 2 and the auxiliary contact 4, on a somewhat enlarged scale.
  • the circuit breaker comprises two relatively movable arc-drawing contacts I and 2, the former being fixed and the other movable, and an auxiliary contact 4 which is fixed and located in the axis of this movable contact, the latter being elevation and partly dur parts tubular to receive this auxiliary contact and being provided with a longitudinal slot 3 for the passage of the stem of the auxiliary contact to enable the movable contact 2 to effect its stroke.
  • the blow-out chamber' is shown at 5 and is provided in two opposite walls with two 13 Claims. (Cl. 200-448) opposed nozzles 5 and 1 through which the movat their end portions than at their center portions; As shown, the auxiliary contact 4 is elongated and its ends extend into the nozzles Band 1.
  • the nozzles 6 and 'l are 'venturi nozzles hav ing restricted throats and, as shown, the ends of auxiliary contact 4 preferably terminate respectively at these restricted throats.
  • a resistance 8 is connected on the one hand to the fixed contact I and on the other hand to the auxiliary electrode 4.
  • the walls or" this passage 9 may support said blow-out chamber.
  • the fixed contact I may, and preferably will be, mounted so as tocushion the-impact of con-.- tact 2 upon contact I, thisv mounting herein comprising relatively slidin telescoping sleeves ll, l2 and interposing spring [3, as illustrated in Fig. 3, which shows upon an enlarged scale the relative positions of the contacts I and 2,
  • Circuit breakers embodying the present invention possess many advantages over those heretofore used, moreparticularly as regards the perfect safety w1th which the resistance is inserted in the circuit of the arc, and the severance of the second arc in series with said resistance; this safety is assured by the perfect separation of the two arcs and by thefact that each of the arcs is blown out by an appropriate nozzle. Furthermore, no part of the arc enters the pressure chamber, thus avoiding great constraint of the arc and the creation of excessive voltages at the moment of the rupture of the arc; addition, the blow-out fiuid or gas is used to better advantage as the arc does not affect it and does not impede its exhaust.
  • a principal fixed electrode 'a movable elongated electrode having a contact end, means for'moving said movable electrode and its contact end axially thereof away from andtowar'cl said fixed electrode, a closed blow-out "chamber hav: 'ing two spaced opposite walls'which are electrically insulating, said chamberl'being "interposed in the path of "the Contact e'hdpf s'aid movable electrode between theextremeclo'sed and open positions thereof,said chamber being provided with two" nozzle'opening's respectively in said opposite wallsf thereof 'an'daligned axially in the p'athof saidf"'niovable elec't'rodd'tlierethrough and providinga"clearance "around said movable electrode, and a separate auxiuary'eiectrode fixedly 'carried'by'said chamberin afposition intermediate and 'extendingbe
  • a principal fixed electr'odeya movable elongated electrode having a cont-act end, means-for moving said movable electrode and 'its'contact end axially thereof away from and toward said fixed electrode, a closed blow-out chamber hav-' ing two spaced opposite walls which are electrically insulating, said; chamber being interposed in the path of the' contact end of said movable electrode between the extreme closed. and open positions thereof, said chamber :being provided with two nozzle openings respectively in said opposite walls thereof and alined axially in the path of said: movable electrode therethrough and providing a clearance around said movable electrode, and a separate auxiliary elec;
  • trode fixedly carried by said chamber in a position intermediate and extending between and spaced from said opposite walls thereof; and.
  • a closed blow-out chamber having two spaced opposite walls which are electrically insulating, said chamber being interposed in the path of the contact end of said moyable electrode between the extreme closed and open positions thereof, said chamber being provided with twonozzle openings respectively in said opposite walls thereof and alined axially in the path of said movable electrode therethrough and providin 'a clearance around said movable electrode, said movable electrode being tubular, ma a, separateelcng'ated 'r'o'deshaped auxiliary 1 ctr9 fixedly carried "by'Tsai' chamber in a position within the bore Qf..said tubular movable electrode and in close clearance therewith during the passage of said 'rn'oyable electrode through said chamber.
  • saidchamber in a position intermediateandk tending between andl'spaced from said'opposltc walls thereof, and for mountingl said auxi l,iary
  • tubular movable electrode comprising means for permitting the passage therethrough of said mounting means as said movable electrode moves through said chamber.
  • a closed blow-out;chamber having two spaced opposite walls which are electrically insulating, said chamber being interposed the path of the contact end of said movableelectrode between the extreme closed and open positions thereof, said chamber being provided with two nozzle openings respectively in said opposite walls thereof and aligned axially inthe path of said movable electrod therethrough and providing a clearance aroundsaid movable electrode, said movable electrode being tubular, a separate elongated rod-shaped auxiliary electrode, mounting means carried by said chamber and carrying said auxiliary electrode for fixedly mounting said auxiliary electrode in said chamber in a position intermediate and extending between and spaced from said opposite walls thereof and for mounting said auxiliary electrode within the bore of said tubular movable electrode and in close clearance therewith during the passage of said movable electrode through said chamber, said tubular movable electrode comprising means for permitting the passage therethrough of said mounting means as said movable electrode moves through said chamber, said auxiliary electrode having terminal portions thereof
  • a principal fixed electrode a movable elongated electrode having a contact end, means for moving said movable electrode and its contact end axially thereof away from and toward said fixed electrode, a closed blow-out chamber having two spaced opposite walls which are electrically insulating, said chamber being interposed in the path of the contact end of said movable electrode between the extreme closed and open positions thereof, said chamber being provided with two nozzle openings respectively in said opposite walls thereof and alined axially in the path of said movable electrode therethrough and providing a clearance around said movable electrode, said movable electrode being tubular, a separate elongated rod-shaped auxiliary electrode, mounting means carried by said chamber and carryin said auxiliary electrode for fixedly mounting said auxiliary electrode therein and for mounting said auxiliary electrode in said chamber in a position intermediate and extending between and spaced from said opposite wall thereof and within the bore of said tubular movable electrode and in close clearance therewith during the passage of said mov
  • a 'circuit breaker according to claim 5 and an impedance connected between said auxiliary electrode and said principal fixed electrode,
  • a circuit breaker according to claim 5 and a resistance connected between said auxiliary electrode and said principal fixed electrode.
  • a principal fixed electrode a movable elongated electrode having a contact end, means for moving said movable electrode and its, contact end axially thereof away from and toward said fixed electrode, a closed blow-out chamber interposed in the path of the contact end of said movable electrode between the extreme closed and open positions thereof, said chamber being provided with two nozzle openings respectively in opposite walls thereof and alined axially in the path of said movable electrode therethrough and providing a clearance around said movable electrode, said movable electrode being tubular, and a separate elongated rod-shaped auxiliary fixedly carried by said chamber in a position within the bore of said tubular movable electrode and in close clearance therewith during the passage of said movable electrode through said chamber, and gas inlet means mounted in the lateral wall of said chamber connecting said opposite walls thereof, and adapted to deliver into said chamber a blast of gas under pressure in a direction substantially perpendicular to the axis of said nozzle
  • a principal fixed electrode a movable elongated electrode having a contact end, means for moving said movable electrode and its contact end axially thereof away from and toward said fixed electrode, a closed blow-out chamber interposed in the path of the contact end of said movable electrode between the extreme closed and open positions thereof, said chamber being provided with two nozzle openings respectively in opposite walls thereof and alined axially in the path of said movable electrode therethrough and providing a clearance around said movable electrode, said movable electrode being tubular, a separate elongated rod-shaped auxiliary electrode, mounting means carried by said chamber for fixedly mounting said auxiliary electrode therein and for mounting said auxiliary electrode within the bore of said tubular movable electrode and in close clearance therewith during the passage of said movable electrode through said chamber, said tubular movable electrode comprising means for permitting the passage therethrough of said mounting means as said movable electrode moves through said chamber, and gas inlet means mounted in the lateral wall of
  • said auxiliary electrode having terminal portions thereof: which extend: intosaid venturi. nozzle openings and respectively terminates-ubstantiall at the restricted throats thereof.

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  • Circuit Breakers (AREA)
US625563A 1939-07-27 1945-10-30 Pneumatic circuit breaker Expired - Lifetime US2529145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU2529145X 1939-07-27

Publications (1)

Publication Number Publication Date
US2529145A true US2529145A (en) 1950-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US625563A Expired - Lifetime US2529145A (en) 1939-07-27 1945-10-30 Pneumatic circuit breaker

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US (1) US2529145A (en。)
BE (1) BE441391A (en。)
FR (1) FR867127A (en。)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116769B (de) * 1953-01-13 1961-11-09 Merlin Gerin Schalter mit Loeschkammer und zwischen dieser und den Schaltkontakten angeordneten, auseinanderlaufenden Leithoernern, auf denen der Lichtbogen mit Unterstuetzung durch einen Luftstrom zur Loeschkammer wandert
US3143622A (en) * 1960-10-28 1964-08-04 Westinghouse Electric Corp Arc-extinguishing unit and contact structure for a circuit interrupter
US4983792A (en) * 1989-03-30 1991-01-08 S&C Electric Company Interrupter switch with selective circuit-isolating feature
US5091616A (en) * 1989-03-30 1992-02-25 S&C Electric Company Self-contained switch for electrical distribution circuit

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US867127A (en) * 1905-03-29 1907-09-24 Christian Marius Hansen Weft-replenishing loom.
FR761571A (fr) * 1932-08-02 1934-03-22 Delle Atel Const Electr Interrupteur électrique à liquide
US2049996A (en) * 1931-03-13 1936-08-04 Delle Atel Const Electr Electric circuit breaker with compressed gas blow-out
US2060282A (en) * 1932-06-04 1936-11-10 Delle Atel Const Electr Electric circuit breaker with compressed gas blow-out
FR809982A (fr) * 1935-06-14 1937-03-12 Siemens Ag Dispositif d'extinction des arcs
FR833721A (fr) * 1937-02-17 1938-10-28 Acec Interrupteur à gaz comprimé
DE668105C (de) * 1934-03-10 1938-11-26 Siemens Schuckertwerke Akt Ges Elektrischer Leistungsschalter mit Lichtbogenloeschung durch ein stroemendes oder expandierendes Loeschmittel
USRE21125E (en) * 1939-06-20 Switch

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE21125E (en) * 1939-06-20 Switch
US867127A (en) * 1905-03-29 1907-09-24 Christian Marius Hansen Weft-replenishing loom.
US2049996A (en) * 1931-03-13 1936-08-04 Delle Atel Const Electr Electric circuit breaker with compressed gas blow-out
US2060282A (en) * 1932-06-04 1936-11-10 Delle Atel Const Electr Electric circuit breaker with compressed gas blow-out
FR761571A (fr) * 1932-08-02 1934-03-22 Delle Atel Const Electr Interrupteur électrique à liquide
DE668105C (de) * 1934-03-10 1938-11-26 Siemens Schuckertwerke Akt Ges Elektrischer Leistungsschalter mit Lichtbogenloeschung durch ein stroemendes oder expandierendes Loeschmittel
FR809982A (fr) * 1935-06-14 1937-03-12 Siemens Ag Dispositif d'extinction des arcs
FR833721A (fr) * 1937-02-17 1938-10-28 Acec Interrupteur à gaz comprimé

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116769B (de) * 1953-01-13 1961-11-09 Merlin Gerin Schalter mit Loeschkammer und zwischen dieser und den Schaltkontakten angeordneten, auseinanderlaufenden Leithoernern, auf denen der Lichtbogen mit Unterstuetzung durch einen Luftstrom zur Loeschkammer wandert
US3143622A (en) * 1960-10-28 1964-08-04 Westinghouse Electric Corp Arc-extinguishing unit and contact structure for a circuit interrupter
US4983792A (en) * 1989-03-30 1991-01-08 S&C Electric Company Interrupter switch with selective circuit-isolating feature
US5091616A (en) * 1989-03-30 1992-02-25 S&C Electric Company Self-contained switch for electrical distribution circuit

Also Published As

Publication number Publication date
BE441391A (en。)
FR867127A (fr) 1941-10-01

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