US2568377A - Magnetic switch - Google Patents

Magnetic switch Download PDF

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Publication number
US2568377A
US2568377A US35310A US3531048A US2568377A US 2568377 A US2568377 A US 2568377A US 35310 A US35310 A US 35310A US 3531048 A US3531048 A US 3531048A US 2568377 A US2568377 A US 2568377A
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US
United States
Prior art keywords
arc
elements
path
arrangement
heads
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
US35310A
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English (en)
Inventor
Zajic Vladislav
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.)
Czechoslovak Metal & Engineeri
Czechoslovak Metal & Engineering Works
Original Assignee
Czechoslovak Metal & Engineeri
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 Czechoslovak Metal & Engineeri filed Critical Czechoslovak Metal & Engineeri
Application granted granted Critical
Publication of US2568377A publication Critical patent/US2568377A/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate

Definitions

  • This invention relates to air type circuitbreak- .ersand, more particularly, to an improved arc quenching arrangementior. such circuit breakers.
  • air circuit breakers Whenair circuit breakers are used with. high voltages and heavy current densities,.extinguish- 'ment'of the arc, resulting from opening of the circuit breaker. under. load, presents a consider- .able. problem.
  • the are is caused to enter the arc .chute by the use of arcing horns or terminals to which the potential of the circuit is transferred upon sepa-
  • the interleaved plates are so arranged that they form a V-shaped slot extending in a plane perpendicular to the arc length.
  • the V is'so arranged that the arc,
  • Another object is to provide such an arrangement whereby the capacity ofthe circuit breaker may be greatly increased without increase in overall dimensions.
  • Fig. 1 is a. perspective view of one of the elements of the quenching chamber.
  • Fig. 2 is a transverse sectional view through the chamber.
  • Figs. 4, 5 and 6 are transverse sectional views through the chamber of Fig. 1 taken in progression from the wider end toward the narrower end of the arc path.
  • Figs. '7 and 8 are transverse sectional views through alternative forms of the quenching chamber.
  • the arc path includes alternated narrow slots 8 and spacious channels [3.
  • the relatively cool walls of slots 8 effect an intensive cooling of the arc, and the spaciou channels 13 provide for liberation of the expanding gases without destructive increase in pressure.
  • an arc quenching arrangement comprising, in combination a pair of. spaced parallel rows of identical elements; said rows extending parallel to the arcing path and the elements extending perpendicular to the arc path and each of said elements comprising a relatively wide rectangular cross-section base, a relatively narrow rectangular cross-section head, and a rectangular cross-section Web interconnecting the base and the head; the elements in each row being arranged with their bases substantially coplanar to form substantially continuous walls and the heads of the elements of each row extending toward the other row; the head of each element being .disposed between a pair of elements in the other row to form alternated relatively narrow slots and relatively spacious gas expansion channels defining a meandering arc path; the arc path in at least a portion of each slot turning sharply at an angle of at least to the overall direction of the arc path through the arrangement; the slots being defined by surfaces of the heads and the channels being defined by webs of adjacent elements.
  • an arc quenching arrangement comprising, in combination a pair of spaced parallel rows of identical elements; said rows extending parallel to the arcing path and the elements extending perpendicular to the arc path and each of said elements comprising a relatively wide rectangular cross-section base, a relatively narrow rectangular cross-section head, and a rectangular cross-section web interconnecting the base and the head; the elements in each row being arranged with their bases substantially co-planar to form substantially continuous walls and the heads of the elements of each row extending toward the other row; the
  • an arc quenching arrangement comprising, in combination a pair of spaced parallel rows of identical elements; said rows extending parallel to the arcing path and the elements extending perpendicular to the arc path and each of said elements comprising a relatively wide rectangular cross-section base, arelatively narrow rectangular cross-section head, and a rectangular cross-section web interconnecting the base and the head; the elements in each row being arranged with their bases substantially coplanar to form substantially continuous walls and the heads of the elements of each row extending toward the other row; the head of each element being disposed in closely spaced relation to the heads and webs of a pair of adjacent elements in the other row to form alternated relatively narrow slots and relatively spacious gas expansion channels defining a meandering arc path in which the direction of arc current flow is reversed in at least two planes normal to each other, the arc path in at least a portion of each slot turning sharply at an angle of at least 180 to the overall direction of the arc path through the arrangement; the slots being defined by such
  • an arc quenching arrangement comprising, in combination a pair of spaced parallel rows of identical elements; said rows extending parallel to the arcing path and the elements extending perpendicular to the arc path and each of said elements comprising a relatively wide rectangular cross-section base, a relatively narrow rectangular cross-section head, and a rectangular cross-section web interconnecting the base and the head; the elements in each row being arranged with their bases substantially co-planar to form substantially continuous walls and the heads of the elements of each row extending toward the other row; the head of each element being disposed in closely spaced relation to the bases and webs of a pair of adjacent elements in the other row to form alternated relatively narrow slots and relatively spacious gas expansion channels defining a meandering arc path in which the direction of arc current flow is reversed in at least two planes normal to each other, the arc path in at least a portion of each slot turning sharply at an angle of at least 90 to the overall direction of the arc path through the arrangement; the slots being defined by such
  • An arc quenching arrangement as claimed in claim 8 in which the webs and heads of said elements are chamfered on the ends toward the entrance to the arrangement to form an uninterrupted arc path converging to such meandering path as the arc is drawn from the entrance into the arrangement.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
US35310A 1947-07-14 1948-06-26 Magnetic switch Expired - Lifetime US2568377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS268303X 1947-07-14

Publications (1)

Publication Number Publication Date
US2568377A true US2568377A (en) 1951-09-18

Family

ID=5451679

Family Applications (1)

Application Number Title Priority Date Filing Date
US35310A Expired - Lifetime US2568377A (en) 1947-07-14 1948-06-26 Magnetic switch

Country Status (4)

Country Link
US (1) US2568377A (de)
CH (1) CH268303A (de)
FR (1) FR969085A (de)
GB (1) GB646113A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644048A (en) * 1950-07-22 1953-06-30 Westinghouse Electric Corp Circuit interrupter
US2668890A (en) * 1949-10-13 1954-02-09 Merlin Gerin Device for extinguishing electrical arcs
US2709735A (en) * 1952-08-01 1955-05-31 Gen Electric Arc chute for electric circuit breakers
US2744983A (en) * 1951-10-03 1956-05-08 Allis Chalmers Mfg Co Perforated arc chute barrier providing parallel arc paths
US2759073A (en) * 1947-01-11 1956-08-14 Ite Circuit Breaker Ltd High voltage magnetic arc extinguishing means
DE1011034B (de) * 1952-08-05 1957-06-27 Allis Chalmers Mfg Company Mil Elektrischer Schalter mit Bogenloeschung
US2933574A (en) * 1954-04-26 1960-04-19 Westinghouse Electric Corp Circuit interrupters
US2941060A (en) * 1953-05-06 1960-06-14 Ite Circuit Breaker Ltd Arc extinguishing means for high voltage circuit breakers
DE19935632A1 (de) * 1999-07-29 2001-02-01 Abb Patent Gmbh Lichtbogenlöschblechpaket für ein elektrisches Schaltgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306204A (en) * 1939-10-11 1942-12-22 Gen Electric Electric arc extinguishing apparatus
US2393164A (en) * 1943-02-27 1946-01-15 Gen Electric Electric circuit breaker
US2442199A (en) * 1943-12-15 1948-05-25 Westinghouse Electric Corp Circuit interrupter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306204A (en) * 1939-10-11 1942-12-22 Gen Electric Electric arc extinguishing apparatus
US2393164A (en) * 1943-02-27 1946-01-15 Gen Electric Electric circuit breaker
US2442199A (en) * 1943-12-15 1948-05-25 Westinghouse Electric Corp Circuit interrupter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759073A (en) * 1947-01-11 1956-08-14 Ite Circuit Breaker Ltd High voltage magnetic arc extinguishing means
US2668890A (en) * 1949-10-13 1954-02-09 Merlin Gerin Device for extinguishing electrical arcs
US2644048A (en) * 1950-07-22 1953-06-30 Westinghouse Electric Corp Circuit interrupter
US2744983A (en) * 1951-10-03 1956-05-08 Allis Chalmers Mfg Co Perforated arc chute barrier providing parallel arc paths
US2709735A (en) * 1952-08-01 1955-05-31 Gen Electric Arc chute for electric circuit breakers
DE1011034B (de) * 1952-08-05 1957-06-27 Allis Chalmers Mfg Company Mil Elektrischer Schalter mit Bogenloeschung
US2941060A (en) * 1953-05-06 1960-06-14 Ite Circuit Breaker Ltd Arc extinguishing means for high voltage circuit breakers
US2933574A (en) * 1954-04-26 1960-04-19 Westinghouse Electric Corp Circuit interrupters
DE19935632A1 (de) * 1999-07-29 2001-02-01 Abb Patent Gmbh Lichtbogenlöschblechpaket für ein elektrisches Schaltgerät

Also Published As

Publication number Publication date
FR969085A (fr) 1950-12-13
GB646113A (en) 1950-11-15
CH268303A (de) 1950-05-15

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