US2145741A - Reclosing circuit breaker - Google Patents

Reclosing circuit breaker Download PDF

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Publication number
US2145741A
US2145741A US169060A US16906037A US2145741A US 2145741 A US2145741 A US 2145741A US 169060 A US169060 A US 169060A US 16906037 A US16906037 A US 16906037A US 2145741 A US2145741 A US 2145741A
Authority
US
United States
Prior art keywords
circuit
circuit breaker
contact structure
spring
latch
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
US169060A
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English (en)
Inventor
Stablein Wilhelm
Willheim Raoul
Uebermuth Werner
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2145741A publication Critical patent/US2145741A/en
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
    • H01H75/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism
    • H01H75/02—Details
    • H01H75/04—Reset mechanisms for automatically reclosing a limited number of times

Definitions

  • a momentary voltage or circuit drop in the power network for executing switching signals or commands is caused by quickly opening and closing a breaker in one or more phases of the power circuit at the central station.
  • the signals which can relate to the switching on and oil of street lighting, night demand apparatus, etc. may be periodic and coordinated as desired. Where the signals are used in power current networks, they may be picked up by a plurality of receivers distributed in the network. In this connection, it has been proposed that a single phase of the power network be interrupted according to a code for a very short duration, such as one cycle of the alternating current and that the interval between two or more such impulses be utilized for the signal characteristic.
  • the circuit breaker can be of any suitable type that is capable of interrupting a power circuit within one to three or four alternating current cycles. A greater duration may cause synchronous machines to fall out of step, etc.
  • the breaker may be readily adapted for automatic reclosing in case of a momentary fault in the power circuit. In such cases, it is highly desirable that continuity 'of service be maintained where the fault such as a lightning surge is of brief duration.
  • the circuit breaker proper which as previously stated can be of any suitable type is generally indicated 'at and comprises a fixed contact 2 coacting with relatively movable contact structure such as the rod contact 3.
  • the circuit breaker controls a power circuit indicated at 4.
  • a suitable operating device such as a solenoid 5 is operatively connected to the breaker through a crank 6 and shaft I in a manner presently set forth.
  • the solenoid 5 can be suitably energized from a control source 8 by a switch diagrammatically indicated at 9.
  • the switch 9 of course can be remotely controlled in a conventional manner such as by relays and the like.
  • the solenoid 5 is also provided with a resetting spring l0 which is shown as directly connected through a crank H to the shaft I.
  • the movable contact 3 is operatively connected to the shaft 1 through a crank l2 and a hollow shaft l3 which is concentrically mounted with respect to the shaft 1 and is adapted to be locked thereto by meansof a locking or latching device generally indicated at H. Accordingly, when shafts l and I3 are locked together, energization of the solenoid 1 is effective to rotate both shafts in a clockwise direction, as viewed, so as to cause separation of the breaker contacts 2 and 3. When unlocked, the shaft I3 is freely rotatable independent of the shaft 1.
  • an energy storing device such as a spring
  • an energy storing device such as a spring
  • the connection between the shafts I and I3 can be broken after a predetermined circuit-opening movement so that the spring
  • the shaft l3 which is suitably journaled at I! has secured thereto a locking disk l8 having a detent IS.
  • the shaft 1 in turn has secured I thereto a latch carrying member on which a latching member 2
  • is biased toward itslatching position by a spring 23 and is provided with a vertical portion 24 for coacting with an adjustable stop member 25 and an offset portion 26 for coacting with the detent
  • through the offset portion 26 and detent l9 forms a releasable connection between the shafts and I3.
  • operation of the solenoid 5 rotates both shafts in unison.
  • the contact 3 reaches a predetermined position the latch portion 24 engages the adjustable stop 25 so as to cause rotation of the latch in a counterclockwise direction as viewed in Fig. 2 and release of the detent 19.
  • the unlooking or releasing operation at this instant is shown by Fig. 2.
  • the stressed spring I5 is instantly effective after the releasing operation to rotate the shaft l3 counterclockwise at high speed to cause reclosure of the rod contact 3 independently of the solenoid 5.
  • the latch 21 can of course be controlled by a conventional over-current relay'instead of by the fixed stop member 25 if desired, so that the releasable connection is not necessarily broken with each circuit-opening operation of the breaker.
  • a high speed reclosing circuit breaker comprising movable contact structure, means for biasing said contact structure to closed circuit position, means for operating said contact structure to open circuit position against said biasing means, and releasable means interconnecting said biasing means and said operating means for causing high speed reclosing of said contact structure independently of said operating means.
  • a high speed reclosing circuit breaker comprising movable contact structure, means for biasing said contact structure to closed circuit position, means for operating said contact structure to open circuit position against said biasing means, and latching means for releasing said operating means with respect to said biasing means in response to predetermined circuit opening movement for causing high speed circuit reclosure.
  • a high speed reclosing circuit breaker comprising movable contact structure, a spring for biasing said structure to closed circuitposition, operating means for moving said structure to open circuit position against the bias of said spring, a latch for interconnecting said spring and operating means, and means for actuating said latch in response to predetermined circuit opening movement whereby said spring is efiective to reclose said contact structure independdently of said operating means.
  • a high speed reclosing circuit breaker comprising movable contact structure, a spring normally biasing said structure to closed circuit position, operating means for moving said structure to open circuit position, a releasable connection between said spring and operating means including a latch whereby said contact structure and operating means are interconnected during the initial circuit opening movement, and means co- .acting with said latch for releasing said connection in response to predetermined circuit opening movement whereby said spring is efiective to cause instantaneous reclosure of said contact structure independently of said operating means.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
US169060A 1936-10-30 1937-10-14 Reclosing circuit breaker Expired - Lifetime US2145741A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA80924D DE684885C (de) 1936-10-30 1936-10-30 Leistungsschalter bzw. Leistungstrennschalter, insbesondere Druckgasschalter, zur Fernsteuerung mittels kurzzeitiger Netzunterbrechungen

Publications (1)

Publication Number Publication Date
US2145741A true US2145741A (en) 1939-01-31

Family

ID=6948176

Family Applications (1)

Application Number Title Priority Date Filing Date
US169060A Expired - Lifetime US2145741A (en) 1936-10-30 1937-10-14 Reclosing circuit breaker

Country Status (6)

Country Link
US (1) US2145741A (xx)
BE (1) BE424351A (xx)
CH (1) CH200808A (xx)
DE (1) DE684885C (xx)
FR (1) FR828515A (xx)
NL (1) NL46511C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3526860A (en) * 1968-04-10 1970-09-01 Mc Graw Edison Co Automatic circuit interrupter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1026399B (de) * 1949-11-19 1958-03-20 Fuji Electric Co Ltd Einrichtung zur wahlweisen Betaetigung von Apparaten und Maschinen mittels eines oder mehrerer Relais einer Relaisgruppe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3526860A (en) * 1968-04-10 1970-09-01 Mc Graw Edison Co Automatic circuit interrupter

Also Published As

Publication number Publication date
BE424351A (xx) 1937-11-30
FR828515A (fr) 1938-05-19
DE684885C (de) 1939-12-07
CH200808A (de) 1938-10-31
NL46511C (xx) 1939-08-15

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