GB587137A - Improvements in or relating to the testing of electrical insulation - Google Patents

Improvements in or relating to the testing of electrical insulation

Info

Publication number
GB587137A
GB587137A GB1883544A GB1883544A GB587137A GB 587137 A GB587137 A GB 587137A GB 1883544 A GB1883544 A GB 1883544A GB 1883544 A GB1883544 A GB 1883544A GB 587137 A GB587137 A GB 587137A
Authority
GB
United Kingdom
Prior art keywords
power factor
conductor
sheath
meter
testing
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
GB1883544A
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.)
ALAN GORDON LYLE
A Reyrolle and Co Ltd
Original Assignee
ALAN GORDON LYLE
A Reyrolle and 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 ALAN GORDON LYLE, A Reyrolle and Co Ltd filed Critical ALAN GORDON LYLE
Priority to GB1883544A priority Critical patent/GB587137A/en
Publication of GB587137A publication Critical patent/GB587137A/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
    • G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3272—Apparatus, systems or circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

587,137. Indicating faults ; power factor and resistance measurements. REYROLLE & CO., Ltd., A., and LYLE, A. G. Oct. 2, 1944, No. 18835. [Class 37] The condition of insulating material situated between a conductor and its metal sheath is ascertained by means of a power factor meter which measures the phase angle between the voltage in the conductor and the capacity current flowing between the conductor and its sheath. A conductor A is insulated from two sections B, B<1> of a metal sheath by condenser type bushings F, G. The two sections B, B<1> which are insulated from each other, are connected to the current coils of power factor meters H, the other ends of the current coils being connected to earth. The voltage coils of the power factor meters are energised by the low tension side J<1> of a transformer J having its high tension side J<2> connected to the conductor A. Any deterioration in the condition of the insulation produces an increased deflection of the power factor meter which is an indication of the deterioration of the insulation. Each power factor meter may also operate a relay and thus isolate a particular section of the conductor. This system can be used for any number of phases, and one power factor meter only is required for testing every section of the sheath, to which it may be connected by a manually operated or continuously driven selector switch.
GB1883544A 1944-10-02 1944-10-02 Improvements in or relating to the testing of electrical insulation Expired GB587137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1883544A GB587137A (en) 1944-10-02 1944-10-02 Improvements in or relating to the testing of electrical insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1883544A GB587137A (en) 1944-10-02 1944-10-02 Improvements in or relating to the testing of electrical insulation

Publications (1)

Publication Number Publication Date
GB587137A true GB587137A (en) 1947-04-15

Family

ID=10119218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1883544A Expired GB587137A (en) 1944-10-02 1944-10-02 Improvements in or relating to the testing of electrical insulation

Country Status (1)

Country Link
GB (1) GB587137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107783034A (en) * 2017-09-14 2018-03-09 北京四方继保自动化股份有限公司 A kind of open side type high voltage isolator condition line monitoring device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107783034A (en) * 2017-09-14 2018-03-09 北京四方继保自动化股份有限公司 A kind of open side type high voltage isolator condition line monitoring device and method

Similar Documents

Publication Publication Date Title
US2375591A (en) Electrical measuring apparatus
GB587137A (en) Improvements in or relating to the testing of electrical insulation
US1929714A (en) Electrical measuring instrument
US1617912A (en) Measuring device for high-voltag networks
US1795176A (en) Capacitance connection to high-voltage lines
US1358179A (en) Method of testing the insulation of generators in service
US2922110A (en) Multi-range a. c. ammeter
US2521917A (en) Micrometer
SU1061065A2 (en) Device for measuring switch contact insulation resistance
US2029685A (en) Supervision of the dielectric losses of a conductor
US1665854A (en) Alternating-current device
US1590970A (en) Apparatus for measuring electric currents
US2162280A (en) Insulation testing
SU67079A1 (en) Method for determining insulation impedance relative to earth of three-phase cable networks with insulated neutral
US1967911A (en) High voltage temperature measuring apparatus
US1829893A (en) Switch
US2170597A (en) Electrical measuring instrument
SU420142A1 (en) SHORT NETWORK OF POWERFUL SINGLE-PHASE ELECTRIC POWER CONSUMERS
SU662995A1 (en) Movable plant for testing and adjusting relay protection current circuits
GB830073A (en) Improvements in and relating to devices for indicating the presence of potential in electrical apparatus
SU55761A1 (en) Device for determining the location of a short circuit of an electric line
SU853570A1 (en) Device for locating grounding in networks with isolated neutral
SU458782A1 (en) Control method of inter-turn insulation of windings
US2132179A (en) System for operating alternating current switchboard instruments
SU1725134A1 (en) Device for measurement of electric power