GB1468367A - Corona discharge detecting device - Google Patents

Corona discharge detecting device

Info

Publication number
GB1468367A
GB1468367A GB666274A GB666274A GB1468367A GB 1468367 A GB1468367 A GB 1468367A GB 666274 A GB666274 A GB 666274A GB 666274 A GB666274 A GB 666274A GB 1468367 A GB1468367 A GB 1468367A
Authority
GB
United Kingdom
Prior art keywords
feb
oscilloscope
corona discharge
corona
signals
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
GB666274A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 claimed from JP1880773A external-priority patent/JPS5731337B2/ja
Priority claimed from JP48018806A external-priority patent/JPS49107425A/ja
Priority claimed from JP1893573A external-priority patent/JPS5712350B2/ja
Priority claimed from JP48019982A external-priority patent/JPS49108924A/ja
Priority claimed from JP48019981A external-priority patent/JPS5139050B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1468367A publication Critical patent/GB1468367A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/183—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core
    • G01R15/185—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using transformers with a magnetic core with compensation or feedback windings or interacting coils, e.g. 0-flux sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/62—Testing of transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors
    • 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
    • H02H7/04—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 transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/19—Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

1468367 Testing transformers for corona discharge MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 13 Feb 1974 [14 Feb 1973 (2) 15 Feb 1973 19 Feb 1973 (2)] 6662/74 Heading G1 A pulse generator, particularly an e.h.t. transformer in a television set, is tested for corona discharge by bandpass filtering and amplifying, preferably over the range 4À2 to 50 Mc/s, either the main output signal, Fig. 2c, or the output signal across a supplementary winding Fig. 2a, and by displaying the resulting signal on an oscilloscope having its x-deflection synchronized with the signals driving the generator. In this way corona discharges cause transitory random signals on the oscilloscope, while the high frequency components of the non-corona signals all appear continuously and stationary on the oscilloscope.
GB666274A 1973-02-14 1974-02-13 Corona discharge detecting device Expired GB1468367A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP1880773A JPS5731337B2 (en) 1973-02-14 1973-02-14
JP48018806A JPS49107425A (en) 1973-02-14 1973-02-14
JP1893573A JPS5712350B2 (en) 1973-02-15 1973-02-15
JP48019982A JPS49108924A (en) 1973-02-19 1973-02-19
JP48019981A JPS5139050B2 (en) 1973-02-19 1973-02-19

Publications (1)

Publication Number Publication Date
GB1468367A true GB1468367A (en) 1977-03-23

Family

ID=27520077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB666274A Expired GB1468367A (en) 1973-02-14 1974-02-13 Corona discharge detecting device

Country Status (3)

Country Link
CA (1) CA999929A (en)
FR (1) FR2217702B1 (en)
GB (1) GB1468367A (en)

Also Published As

Publication number Publication date
DE2406850B2 (en) 1976-07-01
CA999929A (en) 1976-11-16
DE2406850A1 (en) 1975-04-03
FR2217702B1 (en) 1978-07-07
FR2217702A1 (en) 1974-09-06

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940212