GB1220247A - Capacitive voltage transformers - Google Patents

Capacitive voltage transformers

Info

Publication number
GB1220247A
GB1220247A GB4392868A GB4392868A GB1220247A GB 1220247 A GB1220247 A GB 1220247A GB 4392868 A GB4392868 A GB 4392868A GB 4392868 A GB4392868 A GB 4392868A GB 1220247 A GB1220247 A GB 1220247A
Authority
GB
United Kingdom
Prior art keywords
transformer
capacitive voltage
ferro
sept
oscillations
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
GB4392868A
Inventor
David Train
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.)
English Electric Co Ltd
Original Assignee
English Electric 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
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB4392868A priority Critical patent/GB1220247A/en
Priority to CH1397469A priority patent/CH507607A/en
Publication of GB1220247A publication Critical patent/GB1220247A/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
    • H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
    • H02H9/007—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions avoiding or damping oscillations, e.g. fenoresonance or travelling waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Details Of Television Scanning (AREA)

Abstract

1,220,247. Voltage transformers. ENGLISH ELECTRIC CO. Ltd. 12 Sept., 1969 [16 Sept., 1968], No. 43928/68. Heading H2H. Ferro-resonant oscillations in a capacitive voltage transformer are suppressed by connecting a damping impedance across an intermediate electromagnetic transformer. A capacitive voltage transformer comprises serially connected capacitors across one of which is connected an inductive transformer 12 feeding a load 15. Ferro-resonant oscillations which may be set up in the device are detected by a tuned circuit 23, 24, connected across part of the primary winding 11, to produce a signal which is applied to the gate electrode of a semi-conductor switch 21 of the bidirectional type, thereby rendering the switch 21 conductive to connect a resistor 20 across part or all of the primary winding 11 of the transformer 12 socausing the oscillations to be damped. Alternatively the damping resistor and the tuned circuit may be connected across all or part of the same winding or different windings of the transformer 12.
GB4392868A 1968-09-16 1968-09-16 Capacitive voltage transformers Expired GB1220247A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4392868A GB1220247A (en) 1968-09-16 1968-09-16 Capacitive voltage transformers
CH1397469A CH507607A (en) 1968-09-16 1969-09-16 Capacitive voltage transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4392868A GB1220247A (en) 1968-09-16 1968-09-16 Capacitive voltage transformers

Publications (1)

Publication Number Publication Date
GB1220247A true GB1220247A (en) 1971-01-20

Family

ID=10430983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4392868A Expired GB1220247A (en) 1968-09-16 1968-09-16 Capacitive voltage transformers

Country Status (2)

Country Link
CH (1) CH507607A (en)
GB (1) GB1220247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005100A (en) * 1989-08-02 1991-04-02 Southwest Electric Company Transient-filtered transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005100A (en) * 1989-08-02 1991-04-02 Southwest Electric Company Transient-filtered transformer

Also Published As

Publication number Publication date
CH507607A (en) 1971-05-15

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