US2100182A - Compressed fluid circuit breaker with multiple breaks - Google Patents

Compressed fluid circuit breaker with multiple breaks Download PDF

Info

Publication number
US2100182A
US2100182A US753341A US75334134A US2100182A US 2100182 A US2100182 A US 2100182A US 753341 A US753341 A US 753341A US 75334134 A US75334134 A US 75334134A US 2100182 A US2100182 A US 2100182A
Authority
US
United States
Prior art keywords
contacts
electrodes
arcs
blast
auxiliary electrodes
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
US753341A
Other languages
English (en)
Inventor
Clerc Andre
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
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2100182A publication Critical patent/US2100182A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H33/7092—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by several arcing chambers in series

Definitions

  • the single break is quite effective for the reason that the distance between the two electrodes which is determined by the restriking voltage is relatively small and admits the use of an extinguishing chamber of normal height. Further the extremity electrode being disposed atno great distance from the contacts and from the blast pipe, the extinguishing blast is sufiiciently effective to drive away the gases formed by the are.
  • the present invention remedies these disadvantages loy converting the above referred to type of apparatus into circuit-breakers provided with multiple breaks.
  • the said invention relates to electric circuit-breakers in which one or several arcs produced at break are blown transversally by means of a compressed fluid against one or several systems of auxiliary electrodes electrically connected together and disposed in the zone oi the extinguishing blast where they are juxtaposed to main contacts (or electrodes) and situated behind the latter considered in the direction of the blast.
  • the invention is character'- ized in that at least two auxiliary electrodes electrically connected together are disposed side by side and juxtaposed totwo opposed main contacts (or electrodes) of the circuit-breaker, in such manner that the are produced at break is divided into at least two separate arcs, each such are having its points oi origin on a main contact and on an auxiliary electrode.
  • Figs. 1 to 3 show three diagrams of circuitbreakers with a single system of auxiliary electrodes. v
  • Figs. 4 to 6 show in section two other embodiments with a single system of auxiliary electrodes, Fig. 5 being a section through XYX in ,Figs. 7 to 9 show three embodiments of circuitbreakers provided with two systems of auxiliary electrodes. 1
  • FIGs. 10 and 11 show two alternative systems of auxiliary electrodes.
  • Figs. 1 to 3 and 7 to 8 only show the elements which carry the electric current, the chimneys and conduits for the extinguishing blast being eliminated.
  • E E E The resistances inserted in the circuit of the are when the circuit-breaker is opened are designated by E E E
  • the electrodes C and C are each juxtaposed to one of the movable contacts B and B a conjuncting conductor M being provided between these contacts.
  • the operation is the same as that described for the preceding device.
  • the arcs EM and m are curved and come into contact with electrodes C and C Being short-clrcuited the inner branches at and e of the arcs are extinguished and the two arcs f and g which correspond to the arcs b and c in Fig. 1 only subsist.
  • the above referred to commutation phenomenon takes place.
  • two movable contacts B and I traverse in opposite directions two electrodes or conjuncting members M M so as to develop three arcs.
  • the middle curved arc is first extinguished and is followed by the extinction of the ether two arcs.
  • the system of auxiliary electrodes C is supposed to be entirely insulatedfrom the contacts.
  • the system C may also be connected electrically to one of the contacts, preferably by a resistance E as shown in chain-dotted lines in Fig. 1.
  • the resistance is inserted into the circuit and after having accelerated the extinction of the shunted arc (arc C in Fig. 1 for example) it then accelerates the extinction of the are or arcs with which it is then connected in series.
  • circuitbrealser in accordance with Figs. 4 and 5 resembles the diagramsof Figs. 1 and 2. It however difiers in that it is provided with fixed electrodes F and F each connected to one of the contacts A B and juxtaposed to the auxiliary electrodes C and C of system C. On the other hand, system C is entirely insulated from the contacts A B and from the electrodes F 1 as is the case in Fig. 2, however between these latter electrodes and the auxiliary electrodes C 0 intermediary electrodes G and G each "connected to one of the contacts through the resistances E and F have been provided.
  • this circuitbreaker diiferentiates itself from the diagrams of Figs. 1 and 2 in that the two auxiliary electrodes of system C are each disposed in the centre of a distinct chamber H, each of these chambers being fed by a blast pipe J.
  • the two blast pipes J and J are fed from the common conduit K.
  • the central partition between the two blast pipes is provided with a slot N disposed in the plane in which the arc is blown.
  • circuit-breaker in accordance with Fig. 6 only difiers from the preceding device by the fact that only one shunting resistance is made use'of.
  • This resistance instead of connecting one of the contacts with an auxiliary electrode, connects the contact directly with the system C.
  • Fig. 9 shows a particular disposition of the various chimneys and blast pipes corresponding to that of Fig. 6, a disposition which can equally be adopted in the devices corresponding to the diagrams of Figs. 7 and 8.
  • a system formed by a straight or bent bar as shown in Figs. 10 and 11 may also be used.
  • the conductor coupling together the various electrodes may be protected by an electric insulating material.
  • a circuit-breaker comprising, in combination, two contacts relatively movable to produce an arc at break; two fixed, electrically interconnected auxiliary electrodes spaced laterally from each other in the plane of movement of said contacts, and having their free ends directed toward the latter; and means to project a blast of extinguishing fluid past said relatively movable contacts toward said fixed auxiliary electrodes and transversely to the path of movement of said contacts, to project the are extending between said relatively movable contacts into contact with said fixed auxiliary electrodes thereby to divide said are into two separate arcs, each extending paral- "lel to the direction of said blast between one of arcs at break, each extending between said con-' .juncting conductor and one of said movable con-.
  • a circuit-breaker comprising, in combination, two contacts; a plurality of electrically interconnected fixed auxiliary electrodes spaced laterally from each other in the plane of said contacts and having their free ends directed toward the latter; a plurality of conjuncting conductors positioned between said contacts in line with the latter and suitably spaced from each other, said contacts being relativelyv movable into and out of contact with said conjuncting conductors to produce as many arcs at break as there are fixed auxiliary electrodes, the end arcs eachextending between one of said contacts and the adjacent conjuncting conductor and the intermediate arcs each extending between two adjacent conjuncting conductors; and means to project a blast of extinguishing fluid past, and transversely to the path of movement of said contacts, and toward said fixed auxiliary electrodes, to project said arcs, one into contact with each of said fixed auxiliary electrodes, thereby to short circuit and extinguish said arcs.
  • a circuit-breaker comprising, in combination, two contacts relatively movable to produce an are at break; two fixed, electrically interconnected auxiliary electrodes, spaced laterally from each other in the plane of movement of said contacts and having their free ends directed toward the latter; means to project a blast of extinguishing fluid past, and transversely to the path of movement of said contacts and toward said fixed auxiliary electrodes, to project the are produced between said contacts and extending transversely to the direction of said blast, into contact with said fixed auxiliary electrodes, thereby to divide said are into two separate arcs extending parallel to the direction of said blast between one of said contacts and one of said auxiliary electrodes respectively, thereby facilitating extinction of said are; and a resistance connecting said auxiliary electrodes to one of said contacts to accelerate the extinction of said arc.
  • a circuit-breaker comprising, in combination, a conduit; a chimney; a partition extending within and lengthwise of said chimney; communicating passages leading from said conduit and opening into said chimney at opposite sides of said partition; means to project a blast of extinguishing fluid through said conduit, said passages and said chimney upon both sides of said partition; two contacts located in said conduit and relatively movable transversely to the direction of said blast to produce an are at break; two
  • auxiliary electrodes electrically interconnected r and situated in said chimney upon opposite sides
  • a circuit-breaker comprising, in combination, a conduit; a chimney; a partition extending lengthwise of said chimney; communicating passages leading from said conduit and opening into said chimney at opposite sides of said partition; means to project a blast of extinguishing fluid through said conduit, said passages and said chimney upon both sides of said partition; two contacts located in said conduit and relatively movable transversely to the direction of said blast to producev an are at break; two auxiliary electrodes electrically interconnected and situated in said chimney upon opposite sides respectively of said partition, said electrodes being insulated from said relatively movable contacts; two fixed electrodes located between said auxiliary electrodes and said relatively movable contacts, and connected one to each one of the latter; and two intermediary electrodes between said fixed electrodes and said auxiliary electrodes, said intermediary electrodes being each connected to one of said relatively movable contacts through suitable resistances.
  • a circuit-breaker comprising, in combination, a conduit; a chimney; a partition extending lengthwise of said chimney; communicating passages leading from said conduit and opening into said chimney at opposite sides respectively of said partition; means to project a blast of extinguishing fluid through said conduit, said passages and said chimney upon both sides of said partition; two contacts located in said conduit and relatively movable transversely to the direction of said blast to produce an arc at break; two auxiliary electrodes electrically interconnected and situated in said chimney upon opposite sides respectively of said partition; two fixed electrodes located between said auxiliary electrodes and said relatively movable contacts and connected one to each one of the latter; and two intermediary electrodes between said fixed electrodes and said auxiliary electrodes; and a resistance connecting said auxiliary electrodes with one of said relatively movable contacts.
  • a circuit-breaker comprising, in combination, two contacts; aconjuncting conductor positioned between said contacts in the plane of the latter; said contacts being relatively movable into' and out of contact with said conjuncting conductor to produce two arcs at break, each extending .between said conjuncting conductor and one of said movable contacts; two systems of auxiliary electrodes insulated, one system from the other and from said movable contacts, each system comprising two auxiliary electrodes interconnected and spaced laterally from each other in the plane of movement of said contacts; and means to project a blast of extinguishing fiuid past, and transversely, to the path of movement of said contacts, to project the arcs produced transversely to the direction of 'said blast between said contacts, into contact with said auxiliary electrodes, thus to divide said arcs into a plurality of individual arcs extending substantially parallel to said blast, thereby facilitating their extinction by said blast.
  • a circuit-breaker comprising, in combination,two contacts; a conjuncting conductor positioned between said contacts in the plane of the latter, said contacts being relatively movable into and out of contact with said conjunctingconductor to produce two arcs .at break, each extending between said conjuncting conductor and one of said movable contacts; two systems of auxiliary electrodes insulated one system from the other and from said movable contacts, each system comprising two auxiliary electrodes; two
  • a circuit-breaker comprising, in combination, two contacts; a conjuncting conductor positioned between said contacts in the plane of the latter, said contacts being relatively movable into and out of contact with said conjuncting conductor to produce two arcs at break, each extending between said conjuncting conductor and one of said movable contacts, respectively;
  • each system comprising two auxiliary electrodes, having their free ends directed towards said contacts; two fixed electrodes located between said auxiliary electrodes and said movable contacts and connected one to each of the latter; an intermediary electrode between one of said fixed electrodes and one of said auxiliary electrodes, said intermediary electrode being connected to one of said fixed electrodes, and one of said systems of auxiliary electrodes being insulated and the other connected by two resistances to the other of said fixed electrodes on the one hand and to said conjuncting conductor on the other hand; and means to project a blast of extinguishing fluid past, and transversely to the path of movement of said contacts, to project the arcs produced transversely to the direction of said blast be-.
  • a circuit-breaker comprising, in combination, two contacts; a conjuncting conductor positioned between said contacts, in the plane of the latter, said contacts being relatively movable into and out of contact with said conjuncting conductor to produce two arcs at break, each extending between said conjuncting conductor and one of said movable contacts respectively;
  • each system comprising two auxiliary electrodes having their free ends directed towards said contacts; two fixed electrodes located between said auxiliary electrodes and said movable contacts and connected each to one of the latter, both of said systems of auxiliary electrodesbeing connected each to' one of said relatively movable contacts-through a suitable resistance; and means to project a blast of extinguishing fluid past, and transversely to the path of movement of said contacts, to project the arcs produced transversely to the direction of said blast between said contacts, into contact ANDRE CLERC.

Landscapes

  • Circuit Breakers (AREA)
US753341A 1933-12-18 1934-11-16 Compressed fluid circuit breaker with multiple breaks Expired - Lifetime US2100182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2100182X 1933-12-18

Publications (1)

Publication Number Publication Date
US2100182A true US2100182A (en) 1937-11-23

Family

ID=7984929

Family Applications (1)

Application Number Title Priority Date Filing Date
US753341A Expired - Lifetime US2100182A (en) 1933-12-18 1934-11-16 Compressed fluid circuit breaker with multiple breaks

Country Status (3)

Country Link
US (1) US2100182A (enrdf_load_stackoverflow)
BE (1) BE405742A (enrdf_load_stackoverflow)
FR (1) FR783837A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424343A (en) * 1943-05-27 1947-07-22 Westinghouse Electric Corp Circuit interrupter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424343A (en) * 1943-05-27 1947-07-22 Westinghouse Electric Corp Circuit interrupter

Also Published As

Publication number Publication date
BE405742A (enrdf_load_stackoverflow)
FR783837A (fr) 1935-07-18

Similar Documents

Publication Publication Date Title
US2060282A (en) Electric circuit breaker with compressed gas blow-out
US3160727A (en) Gas-blast orifice-type interrupting unit
US2506991A (en) Circuit breaker
US2353729A (en) Air blast arc chute
US2100182A (en) Compressed fluid circuit breaker with multiple breaks
US2306240A (en) Gas blast circuit breaker
US2293452A (en) Electric air circuit breaker
US2049995A (en) Electric circuit-breaker with compressed gas blow-out
US1713229A (en) Circuit interrupter
US2710897A (en) Switch construction
US2225791A (en) Circuit interrupter
US2049996A (en) Electric circuit breaker with compressed gas blow-out
US1533251A (en) Electric switch
US2275872A (en) Gas blast electric circuit breaker
US2486127A (en) Air blast electric circuit breaker
US3551624A (en) Gas-flow circuit interrupters having improved orifice and contact constructions
US2222719A (en) Air blast circuit breaker
US2629036A (en) Circuit breaker
US2416185A (en) Fluid blast circuit interrupter
US2272214A (en) Air blast circuit breaker
US2298859A (en) Alternating current electric circuit breaker
US2039054A (en) Oil circuit breaker contact
GB720021A (en) Improvements in and relating to electric circuit breakers
US2293320A (en) Gas blast circuit breaker
US2441943A (en) Gas blast circuit breaker