GB1286855A - Improvements in flip-flop lightning arrester with reduced protective level - Google Patents

Improvements in flip-flop lightning arrester with reduced protective level

Info

Publication number
GB1286855A
GB1286855A GB44426/69A GB4442669A GB1286855A GB 1286855 A GB1286855 A GB 1286855A GB 44426/69 A GB44426/69 A GB 44426/69A GB 4442669 A GB4442669 A GB 4442669A GB 1286855 A GB1286855 A GB 1286855A
Authority
GB
United Kingdom
Prior art keywords
gaps
column
resistors
arrester
columns
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
GB44426/69A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1286855A publication Critical patent/GB1286855A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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)
  • Thermistors And Varistors (AREA)

Abstract

1286855 Lightning arresters GENERAL ELECTRIC CO 9 Sept 1969 [16 Sept 1968] 44426/69 Heading H2H A lightning arrester comprises parallel columns of spark gaps and valve resistors, in series with a common valve resistance. Intermediate points in each column are connected by a resistor. The arrangement provides an arrester with a reduced protective level which is suitable for use with D.C. systems. In the arrester shown in Fig. 1, identical columns 4, 4<SP>1</SP> are connected in series with valve resistor discs VR3-VR10. The columns are linked by resistors R1, R2 which include between them equal fractions of the total, number of current-limiting gaps G1-G10, G<SP>1</SP>1-G<SP>1</SP>10 in each column, and of the total number of valve resistors VR1-VR10 in each path through the arrester. In operation, if it is assumed that the column 4<SP>1</SP> has brokendown and is conducting current, then the voltage across gaps G5 and G6 in the other column 4, which is not conducting, will be equal to the voltage across gaps G<SP>1</SP>5 and G<SP>1</SP>6 and resistors VR<SP>1</SP>1 and VR<SP>1</SP>2, which is a fixed proportion of the total voltage across the arrester independent of the current flowing. As the gaps G<SP>1</SP>5, G<SP>1</SP>6 build up voltage, at some point the gaps G5, G6 will spark over and the column 4<SP>1</SP> will clear. The number of gaps in each column between resistors R1 and R2 is chosen so that when gaps G5, G6 spark over, the increased voltage across the other gaps in column 4 causes them also to spark over. Subsequently, the two columns conduct alternately until the overvoltage condition is cleared. In a modification, Fig. 2 (not shown), triggered gaps are used in each column, and only a single resistor connects the two columns. Reference has been directed by the Comptroller to Specification 1,148,151.
GB44426/69A 1968-09-16 1969-09-09 Improvements in flip-flop lightning arrester with reduced protective level Expired GB1286855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76222568A 1968-09-16 1968-09-16

Publications (1)

Publication Number Publication Date
GB1286855A true GB1286855A (en) 1972-08-23

Family

ID=25064447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44426/69A Expired GB1286855A (en) 1968-09-16 1969-09-09 Improvements in flip-flop lightning arrester with reduced protective level

Country Status (5)

Country Link
US (1) US3544847A (en)
JP (1) JPS4810974B1 (en)
CH (1) CH510946A (en)
GB (1) GB1286855A (en)
SE (1) SE369990B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH486788A (en) * 1968-08-28 1970-02-28 Bbc Brown Boveri & Cie Surge arresters
DE3530677A1 (en) * 1985-08-28 1987-03-12 Licentia Gmbh PROTECTIVE DEVICE AGAINST TURNOVER IN A TRANSMITTER CIRCUIT
DE102012022399A1 (en) * 2012-11-16 2014-05-22 Phoenix Contact Gmbh & Co. Kg ignition circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763818A (en) * 1954-10-14 1956-09-18 Westinghouse Electric Corp Lighting arrester

Also Published As

Publication number Publication date
SE369990B (en) 1974-09-23
US3544847A (en) 1970-12-01
JPS4810974B1 (en) 1973-04-09
CH510946A (en) 1971-07-31
DE1944816B2 (en) 1973-02-01
DE1944816A1 (en) 1970-03-26

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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