GB1274888A - Improvements in voltage surge diverters - Google Patents

Improvements in voltage surge diverters

Info

Publication number
GB1274888A
GB1274888A GB44427/69A GB4442769A GB1274888A GB 1274888 A GB1274888 A GB 1274888A GB 44427/69 A GB44427/69 A GB 44427/69A GB 4442769 A GB4442769 A GB 4442769A GB 1274888 A GB1274888 A GB 1274888A
Authority
GB
United Kingdom
Prior art keywords
resistor
inductor
arrester
current
voltage
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
GB44427/69A
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 GB1274888A publication Critical patent/GB1274888A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01T1/00—Details of spark gaps
    • H01T1/16—Series resistor structurally associated with spark gap

Abstract

1,274,888. Surge diverters; protecting converters. GENERAL ELECTRIC CO. 9 Sept., 1969 [16 Sept., 1968], No. 44427/69. Headings H2F and H2H. A lightning arrester comprises a currentlimiting gap in series with a valve resistor, and has an extra series valve resistor connected in parallel with an inductor. Fig. 1 shows a lightning arrester 7 connected between a converter 1 and a high voltage D.C. transmission line 2. The arrester protects the components of the converter, and must include a large amount of valve resistance to prevent large voltage transients at sparkover. Legs A and B, each including a current-limiting gap 8, sparkover alternately in a flip-flop manner, while a common valve resistor 10 and an extra resistor 11 in parallel with an inductor 12 are connected in series with both legs. In operation, when one of the gaps 8 breaks down, current through the arrestor increases rapidly and is therefore forced to pass through the extra resistor 11 rather than through the inductor 12. After a short time, the current becomes more steady and thus passes through the inductor and by-passes the resistor 11. Similarly, when the conducting leg clears, current bands 60 continue through the inductor, thus preventing the arrester voltage from rising too high. In this way, the inclusion of the resistor 11 and inductor 12 in the arrester prevents the overall voltage falling too far at sparkover and also ensures that the voltage does not increase too much when a leg of the arrester clears. A further gap may be connected across the extra resistor 11. This gap is arranged to break down only on the occurrence of a fast, high current surge.
GB44427/69A 1968-09-16 1969-09-09 Improvements in voltage surge diverters Expired GB1274888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76226568A 1968-09-16 1968-09-16

Publications (1)

Publication Number Publication Date
GB1274888A true GB1274888A (en) 1972-05-17

Family

ID=25064553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44427/69A Expired GB1274888A (en) 1968-09-16 1969-09-09 Improvements in voltage surge diverters

Country Status (6)

Country Link
US (1) US3538388A (en)
JP (1) JPS5440734B1 (en)
CH (1) CH505488A (en)
DE (1) DE1944817B2 (en)
GB (1) GB1274888A (en)
SE (1) SE369991B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2864714B1 (en) * 2003-12-30 2006-05-12 Soule Protection Surtensions DEVICE FOR PROTECTING AGAINST OVERVOLTAGES WITH IMPROVED CURRENT CAPACITY CAPACITY

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019367A (en) * 1957-01-04 1962-01-30 Ohio Brass Co Lighting arrester and gap unit therefor
US3320482A (en) * 1964-06-02 1967-05-16 Gen Electric Lightning arrester for high energy switching surges
US3348100A (en) * 1965-03-22 1967-10-17 Gen Electric Sparkover control circuit for lightning arrester shunt gap unit

Also Published As

Publication number Publication date
CH505488A (en) 1971-03-31
DE1944817C3 (en) 1975-04-10
US3538388A (en) 1970-11-03
DE1944817B2 (en) 1972-12-14
JPS5440734B1 (en) 1979-12-05
SE369991B (en) 1974-09-23
DE1944817A1 (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