GB465127A - Improvements relating to the testing of electric circuits - Google Patents

Improvements relating to the testing of electric circuits

Info

Publication number
GB465127A
GB465127A GB3012435A GB3012435A GB465127A GB 465127 A GB465127 A GB 465127A GB 3012435 A GB3012435 A GB 3012435A GB 3012435 A GB3012435 A GB 3012435A GB 465127 A GB465127 A GB 465127A
Authority
GB
United Kingdom
Prior art keywords
circuit
breaker
winding
surge currents
terminals
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
GB3012435A
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.)
KENNETH JAMES RAWCLIFFE WILKIN
British Thomson Houston Co Ltd
Original Assignee
KENNETH JAMES RAWCLIFFE WILKIN
British Thomson Houston 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 KENNETH JAMES RAWCLIFFE WILKIN, British Thomson Houston Co Ltd filed Critical KENNETH JAMES RAWCLIFFE WILKIN
Priority to GB3012435A priority Critical patent/GB465127A/en
Publication of GB465127A publication Critical patent/GB465127A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/333—Testing of the switching capacity of high-voltage circuit-breakers ; Testing of breaking capacity or related variables, e.g. post arc current or transient recovery voltage
    • G01R31/3333—Apparatus, systems or circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

465,127. Current and pressure meters. BRITISH THOMSON - HOUSTON CO., Ltd., TRENCHAM, H., and WILKINSON, K. J. R. Oct. 31, 1935, Nos. 30124 and 32336. [Class 37] Circuit conditions, particularly the re-striking voltage of a circuit-breaker, are determined by injecting into the circuit recurrent surge currents at the source of energy, for example, an alternator or across the open terminals of a circuit-breaker, the resulting voltage surges being measured on a cathode ray oscillograph. The surge currents may be produced by triggering a grid controlled arc discharge device at the desired section of a sine wave current applied to a mutual inductance. Where the surge currents are injected at a point away from the circuit-breaker, a half-wave rectifier is connected across the open breaker terminals. The Figure shows a transformer with three secondary windings 8 .. 10, the winding 8 being connected to the scanning coil 13 on the time base circuit. The winding 9 has a shunt resistance 15 .. 17 with tappings to the cathode and anode and accelerator electrodes. The winding 10 feeds the discharge tube 19 through resistance and capacitance connections, the output being connected to the circuit-breaker 1 and deflecting plates of the oscillograph.
GB3012435A 1935-10-31 1935-10-31 Improvements relating to the testing of electric circuits Expired GB465127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3012435A GB465127A (en) 1935-10-31 1935-10-31 Improvements relating to the testing of electric circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3012435A GB465127A (en) 1935-10-31 1935-10-31 Improvements relating to the testing of electric circuits

Publications (1)

Publication Number Publication Date
GB465127A true GB465127A (en) 1937-04-30

Family

ID=10302673

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3012435A Expired GB465127A (en) 1935-10-31 1935-10-31 Improvements relating to the testing of electric circuits

Country Status (1)

Country Link
GB (1) GB465127A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203559A (en) * 1987-04-08 1988-10-19 Vacuum Interrupters Testing of vacuum interrupters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203559A (en) * 1987-04-08 1988-10-19 Vacuum Interrupters Testing of vacuum interrupters

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