US1690524A - Switching system - Google Patents

Switching system Download PDF

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Publication number
US1690524A
US1690524A US117793A US11779326A US1690524A US 1690524 A US1690524 A US 1690524A US 117793 A US117793 A US 117793A US 11779326 A US11779326 A US 11779326A US 1690524 A US1690524 A US 1690524A
Authority
US
United States
Prior art keywords
circuit
main switch
oscillatory
oscillatory circuit
discharge tube
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
US117793A
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English (en)
Inventor
Rudolf G Berthold
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.)
Siemens Schuckertwerke AG
Original Assignee
Siemens Schuckertwerke AG
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 Siemens Schuckertwerke AG filed Critical Siemens Schuckertwerke AG
Application granted granted Critical
Publication of US1690524A publication Critical patent/US1690524A/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
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere

Definitions

  • My invention relates to a switching system in which an oscillatory circuit is connected in parallel relation or shunt to the main switch and takes up the energy of the circuit to be broken.
  • the known arrangement have the disadvantage that it is necessary to construct the oscillatory circuit for large capacities to be disconnected for a correspondingly large energy consumption. This involves lar e and expensive condensers.
  • the size of t e oscillatory circuit may according to my invention be considerably reduced by also connecting in parallel relation to the main switch a gas discharge tube which in the case of alternating current has the task to take up the current rush up to the first passage of the alternating current through the zero value.
  • the ignition of the gas discharge tube is preferably effected by means of ignition electrodes which are excited from the oscillatory circuit.
  • FIG. 1 An embodiment of my invention is diagrammatically illustrated in the accompanymg drawing by way of example.
  • Two oscil latory circuits 7 and 8 are here connected in series with each other and in parallel relation or shunt to the main switch 3.
  • a mercury vapor discharge tube 11 with two mercury electrodes 12 and 13 and two ignition electrodes 10 is furthermore also connected in parallel relation to the switch 3.
  • the excitation of the ignition electrodes takes place from the secondary winding of a transformer 9 whose primary winding is connected in series ,zero in the leads and thus also with the two oscillatory circuits 7 and 8.
  • the main switch 3 When the main switch 3 is opened the two oscillatory circuits 7 and 8 are first charged. A considerable rush of current therefore flows through the transformer 9 and the arc is struck in the mercury vapor tube by the excitation of the ignition electrodes 10.
  • the oscillatory circuit of constant natural frequency may also be made variable and it may at first when opening the main switch be adjusted out of tune in relation to the system frequency.
  • the resistance of the oscillatory circuit is then comparatively low and the current to be switched off flows for the larger part throu h the oscillatory circuit instead of through t e main switch.
  • the oscillatory circuit is adjusted to the frequency of the system and thus the current flowing through the oscillatory circuit is gradually weakened.
  • the oscillatory circuit itself may then be ultimately disconnected by opening a switch.
  • the tuning of the oscillatory circuits 7 and 8 may be effected for instance by means of the adjustment of control levers 17 and 18 respectively on taps 15 and 16 which lead to the inductance coils contained in these circuits.
  • Tuning 0);- pedients of this character are well known in the art and may be modified by any skilled designer to suit the particular condition under which they are employed.

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  • Generation Of Surge Voltage And Current (AREA)
US117793A 1925-06-27 1926-06-22 Switching system Expired - Lifetime US1690524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1690524X 1925-06-27

Publications (1)

Publication Number Publication Date
US1690524A true US1690524A (en) 1928-11-06

Family

ID=7739495

Family Applications (1)

Application Number Title Priority Date Filing Date
US117793A Expired - Lifetime US1690524A (en) 1925-06-27 1926-06-22 Switching system

Country Status (2)

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US (1) US1690524A (enrdf_load_stackoverflow)
NL (1) NL19825C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465682A (en) * 1942-03-31 1949-03-29 Bbc Brown Boveri & Cie Moving contact electric current converter
US2491975A (en) * 1948-05-12 1949-12-20 Westinghouse Electric Corp Half cycle detector for electronic controls
US3278801A (en) * 1962-03-28 1966-10-11 Karl Rath System of arc suppression for electrical switches and circuit breakers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465682A (en) * 1942-03-31 1949-03-29 Bbc Brown Boveri & Cie Moving contact electric current converter
US2491975A (en) * 1948-05-12 1949-12-20 Westinghouse Electric Corp Half cycle detector for electronic controls
US3278801A (en) * 1962-03-28 1966-10-11 Karl Rath System of arc suppression for electrical switches and circuit breakers

Also Published As

Publication number Publication date
NL19825C (enrdf_load_stackoverflow)

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