GB663898A - Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit - Google Patents

Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit

Info

Publication number
GB663898A
GB663898A GB1453849A GB1453849A GB663898A GB 663898 A GB663898 A GB 663898A GB 1453849 A GB1453849 A GB 1453849A GB 1453849 A GB1453849 A GB 1453849A GB 663898 A GB663898 A GB 663898A
Authority
GB
United Kingdom
Prior art keywords
source
biassing
rectifier
voltage
methods
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
Application number
GB1453849A
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 Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
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
Priority to NL153566D priority Critical patent/NL153566C/xx
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB1453849A priority patent/GB663898A/en
Priority to DEW2016A priority patent/DE825569C/en
Priority to US265681A priority patent/US2637769A/en
Publication of GB663898A publication Critical patent/GB663898A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

663,898. Sparking preventing in switches. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd., and WALKER, A. H. B. May 2, 1950. [May 31, 1949] No. 14538/49. Class 38 (v). Arcing at a switch 5 controlling an inductivecircuit 1 is suppressed by means of a rectifier 8 subjected to a reverse biassing voltage and connected so that surge energy due to the breaking of the circuit is fed through the rectifier to the biassing source and is absorbed thereby whenever the surge voltage exceeds a predetermined value. In Fig. 1, the source 6, 7 supplying the circuit 1 is also the biassing source. On opening the switch 5, a voltage is induced in the winding or tapped portion 2, 3, which, when it exceeds the supply voltage, sends current through the rectifier 8 and source 6, 7. In Fig. 4, a separate biassing source 10 is used and connected in series with the rectifier across part of the inductance 1. In Fig. 5, the biassing source is a condenser 12. This arrangement is for contacts which operate a number of times in quick succession, which causes a voltage to be built up in the condenser. In Fig. 6, which is suitable for A.C. or reversible D.C. the biassing source is a battery 10 and is connected to a full wave rectifier 14 connected to a coil 13 coupled to the inductance 1.
GB1453849A 1949-05-31 1949-05-31 Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit Expired GB663898A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL153566D NL153566C (en) 1949-05-31
GB1453849A GB663898A (en) 1949-05-31 1949-05-31 Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit
DEW2016A DE825569C (en) 1949-05-31 1950-05-11 Device for suppressing arcing in the event of a contact
US265681A US2637769A (en) 1949-05-31 1951-12-14 Means for suppressing arcing at contacts breaking a direct current inductive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1453849A GB663898A (en) 1949-05-31 1949-05-31 Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit

Publications (1)

Publication Number Publication Date
GB663898A true GB663898A (en) 1951-12-27

Family

ID=10043004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1453849A Expired GB663898A (en) 1949-05-31 1949-05-31 Improvements relating to methods of suppressing arcing at contacts breaking an inductive circuit

Country Status (1)

Country Link
GB (1) GB663898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1160059B (en) * 1957-04-12 1963-12-27 American Mach & Foundry Arrangement for suppressing arcs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1160059B (en) * 1957-04-12 1963-12-27 American Mach & Foundry Arrangement for suppressing arcs

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