GB1193558A - Improved Over-Voltage Protection Device. - Google Patents

Improved Over-Voltage Protection Device.

Info

Publication number
GB1193558A
GB1193558A GB52367/68A GB5236768A GB1193558A GB 1193558 A GB1193558 A GB 1193558A GB 52367/68 A GB52367/68 A GB 52367/68A GB 5236768 A GB5236768 A GB 5236768A GB 1193558 A GB1193558 A GB 1193558A
Authority
GB
United Kingdom
Prior art keywords
branch
voltage
branches
stack
extinction
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
GB52367/68A
Inventor
Erland Nilsson
Asle Schei
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1193558A publication Critical patent/GB1193558A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

1,193,558. Voltage protection arrangements. ALLMANNA SVENSKA ELEKTRISKA A.B. 5 Nov., 1968 [6 Nov., 1967], No. 52367/68. Heading H2H. A voltage protection arrangement for A.C. or D.C. systems comprises a plurality of parallel branches, each containing non-linear resistors and spark-gap stacks. Cross impedances between the branches ensure that all branches take part when discharge occurs, and arc extinction is aided by magnetic extension. In operation, assuming the branch 1 ignites first, the voltage drop across the stacks 6, 7 will initially be very low, and most of the drop in the branch 1 will be across the non-linear resistor 5. By way of the impedance 8, this voltage is applied to the stack 7 of the next branch 2, igniting first this stack, and then the other stack 6. Similarly, branches 3, 4 ... are successively ignited. In the meantime, the arcs in branch 1 have been extended until the impedance of this branch rises to the point where extinction occurs. Now, the voltage across the non-linear resistor 5 in the branch 2 will raise the voltage across the stack 6 in branch 1 until re-ignition eventually takes place. In this way, repeated ignition and extinction takes place in each of the branches while the over-voltage condition persists.
GB52367/68A 1967-11-06 1968-11-05 Improved Over-Voltage Protection Device. Expired GB1193558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15144/67A SE352992B (en) 1967-11-06 1967-11-06

Publications (1)

Publication Number Publication Date
GB1193558A true GB1193558A (en) 1970-06-03

Family

ID=20300218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52367/68A Expired GB1193558A (en) 1967-11-06 1968-11-05 Improved Over-Voltage Protection Device.

Country Status (7)

Country Link
US (1) US3566197A (en)
JP (1) JPS5419985B1 (en)
CH (1) CH491521A (en)
DE (1) DE1806587B2 (en)
FR (1) FR1593113A (en)
GB (1) GB1193558A (en)
SE (1) SE352992B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE361379B (en) * 1972-03-21 1973-10-29 Asea Ab
GB1404240A (en) * 1972-10-23 1975-08-28 Bowthorpe Hellermann Ltd Lightning arresters and surge diverters
SE397026B (en) * 1975-03-18 1977-10-10 Asea Ab VALVE DETECTOR DEVICE
US4347539A (en) * 1981-06-03 1982-08-31 Westinghouse Electric Corp. Electrical equipment protective apparatus with energy balancing among parallel varistors
US4807082A (en) * 1987-05-14 1989-02-21 General Electric Corporation Current surge protector for power fuses
US4945442A (en) * 1989-01-30 1990-07-31 The Boeing Company Protective circuitry for high-energy transients
US6917501B2 (en) * 2003-02-26 2005-07-12 Hewlett-Packard Development Company, L.P. Electrostatic discharge protection apparatus and method employing a high frequency noncoupled starter circuit

Also Published As

Publication number Publication date
DE1806587A1 (en) 1969-07-24
DE1806587B2 (en) 1971-11-18
FR1593113A (en) 1970-05-25
SE352992B (en) 1973-01-15
US3566197A (en) 1971-02-23
JPS5419985B1 (en) 1979-07-19
CH491521A (en) 1970-05-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee