US1427367A - Circuit interrupter - Google Patents

Circuit interrupter Download PDF

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Publication number
US1427367A
US1427367A US1427367DA US1427367A US 1427367 A US1427367 A US 1427367A US 1427367D A US1427367D A US 1427367DA US 1427367 A US1427367 A US 1427367A
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United States
Prior art keywords
circuit
interrupter
armature
current
winding
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Expired - Lifetime
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English (en)
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/06—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electromagnetic opening

Definitions

  • Our invent'on relates to circuit interrupt ers andparticularly to quick-acting interrupters: i 1
  • One object of our invention is toprovide means for interrupting a circuit in anticipation of an-o'verload thereon.
  • Another object of our invention is topr ovide a circuit interrupter-actuating device thatshall be :so controlled-directly from the circuit that :its time of Operation shall be relatively short.
  • a further. object of our invention is to provide a circuit-interrupting device, of the above-indicated character, that shall-be simple and ,inenpensiveto construct and accurate injits operation.
  • a circuit interrupter-and an electromagnet comprising a stationary core member having' an air gap thereim'an armature that normally bridges the air gap and is operatively connected )to the circuit interrupter, a spring for actuating the armature to its open position, a windin for so energizing the stationary core mem eras to normally hold the armature in its-closed position, and 'a windoperatively connected to-the circuit and so disposedwith respect to the armature that, when the current in the direct-current circuit changes quickly, by reason of a ground or short circuit thereon, suflicient current will induced in the winding to divert the 'fiux from the armatureithrough the air gap in the stationary core member and thus permit the spring to quickly open the
  • drawing is a diagrammatic view of a directcurr'entcircuit embodying our invention.
  • -A-direct-current circuit 1 is supplied with energy from a source 2 of electromotive force and is provided with a circuit'interrupterfi having an actuating and controlling device 4:.
  • a devices comprises a sta netizable, core member 5 of substantially rectangular shape having an air gap 6 m;
  • an armature 8 thatis pivotallymounted, at a point 9 on the corememher 5, and an actuating Winding 7 that is connected in' shunt relation to the circuit 1. for actuating the armature 8 to such position asto open the interrupter 3 under predetermined conditions.
  • a winding 12 is disposed around the armature 8, and iscon nected, through a resistor 13, to the terminals of a series transformer 14 with which the circuit -1 is provided.
  • a r -Since the-armature 8 is adapted to bridge the air gap 6 under nornial conditions, the flux set up by'the winding 7 will traverse the armature 8 and three legs of the core member 5 to thereby hold the interrupter 3 in its closed position.
  • the function of the winding 12 is not to neutralize the flux set up by the winding 7, but merely to so divert the same through' another' path that the time of operation ofthe interrupter will be reduced to a minimum ivalue. It will further be understood that the-winding 12 onar y magis so, quickly energized, by reason of the quick change in voltage when a fault ob tains on the circuit 1, that the interrupter 3 may be opened substantially in anticipation of anactual overload on the circuit.
  • the combination with a circuit interrupter, of an electromagnet having 5) potential winding operatiyely connected to the circuit for holding the interrupter closed, and means tipraiiii'ely'con nected to the circuit and depeiidentiip'en the change of current in the circuit, for demagnctizing a portion of the electroiuagnet 8.
  • the combination with a circuit interrupter, of an electromagnet comprising an armature for directly actuating the interrupter, a potential Winding for actuating the armature, and means dependent upon the rate of change of current in the circuit, for rendering 'the' armature non-responsive to the potential windmg.
  • the combination with a circuit interrupter, of an electromagnet comprising an armature for directly actuating the interrupter, a potential wind-V mg for actuating the armature in one direction', aspring for actuating the armature in the other direction, and means dependent upon the rate'of ch-ange'of current in the circuit, for rendering the armature non-respon'sive to the potential winding.
  • the combination, with a circuit interrupter, of an electromagnet comprising an armature for directly actuating the interrupter, a potential Wind'- ing for actuating the armature in one direc tion, a spring for actuating the armature in the other direction, an'd means for rendering the armature non-responsive to the potential winding only when the current traversing the circuit increases quickly.
  • a direct-current circuit the combina-tion with a circuit interrupter, of an electromagnet comprising an armature for holding the interrupter closed, a spring for opening the interrupter, a winding for actuat-ing tlie'annature to its closed position, and a winding adapted to be energized from the circuit only when the current traversing the circuit changes quickly to so demagnetize the armature as to permit the spring to open the interrupter quickly.
  • the combination with a circuit interrupter, of an electromagnet comprising a core member and an arniire ture member, means for energizing the core member and means disposed around the armature member for deflecting the magnetic flux therefrom in anticipation of a sudden overload on the circuit.
  • the combination with a circuit interrupter, of an electromagnet comprising a stationary magnetizable core member, an armature, a potential winding for actuating the armature to hold the interrupter closed, and a winding energized in anticipation of a predetermined flow of current in the circuit for preventing the flux from the potential winding from actuating the armature.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
US1427367D 1918-10-17 Circuit interrupter Expired - Lifetime US1427367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US332068XA 1918-10-17 1918-10-17

Publications (1)

Publication Number Publication Date
US1427367A true US1427367A (en) 1922-08-29

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Application Number Title Priority Date Filing Date
US1427367D Expired - Lifetime US1427367A (en) 1918-10-17 Circuit interrupter

Country Status (2)

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US (1) US1427367A (de)
DE (1) DE332068C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941122A (en) * 1956-03-12 1960-06-14 Licentia Gmbh High speed electromagnetic electroresponsive device
US3069602A (en) * 1959-05-28 1962-12-18 Glenn M Stout Magnetic device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008049432B4 (de) * 2008-09-25 2018-02-08 Siemens Aktiengesellschaft Leistungsschalter und Stromwandler für einen Leistungsschalter
EP3503131B1 (de) * 2017-12-19 2023-08-30 Vestel Elektronik Sanayi ve Ticaret A.S. Induktor und verfahren zur veränderung der magnetischen permeabilität eines induktors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941122A (en) * 1956-03-12 1960-06-14 Licentia Gmbh High speed electromagnetic electroresponsive device
US3069602A (en) * 1959-05-28 1962-12-18 Glenn M Stout Magnetic device

Also Published As

Publication number Publication date
DE332068C (de) 1921-01-20

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