GB2183049B - Intrinsically safe current transfomers - Google Patents

Intrinsically safe current transfomers

Info

Publication number
GB2183049B
GB2183049B GB8528280A GB8528280A GB2183049B GB 2183049 B GB2183049 B GB 2183049B GB 8528280 A GB8528280 A GB 8528280A GB 8528280 A GB8528280 A GB 8528280A GB 2183049 B GB2183049 B GB 2183049B
Authority
GB
United Kingdom
Prior art keywords
transfomers
intrinsically safe
safe current
current
intrinsically
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 - Lifetime
Application number
GB8528280A
Other versions
GB8528280D0 (en
GB2183049A (en
Inventor
Stephen Day
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8528280A priority Critical patent/GB2183049B/en
Publication of GB8528280D0 publication Critical patent/GB8528280D0/en
Publication of GB2183049A publication Critical patent/GB2183049A/en
Application granted granted Critical
Publication of GB2183049B publication Critical patent/GB2183049B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H02H7/042—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 for current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
GB8528280A 1985-11-16 1985-11-16 Intrinsically safe current transfomers Expired - Lifetime GB2183049B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8528280A GB2183049B (en) 1985-11-16 1985-11-16 Intrinsically safe current transfomers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8528280A GB2183049B (en) 1985-11-16 1985-11-16 Intrinsically safe current transfomers

Publications (3)

Publication Number Publication Date
GB8528280D0 GB8528280D0 (en) 1985-12-18
GB2183049A GB2183049A (en) 1987-05-28
GB2183049B true GB2183049B (en) 1990-05-23

Family

ID=10588326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8528280A Expired - Lifetime GB2183049B (en) 1985-11-16 1985-11-16 Intrinsically safe current transfomers

Country Status (1)

Country Link
GB (1) GB2183049B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642175B1 (en) * 1989-01-20 1991-03-29 Merlin Gerin DEVICE FOR DETECTING MANEUVER OVERVOLTAGES
GB2260413B (en) * 1991-10-11 1996-04-24 Mohammad Javad Birjandi Search coil for detecting magnetic field components
WO1995009468A1 (en) * 1993-09-29 1995-04-06 Russell William Adam Open circuit protection device
AU683307B2 (en) * 1993-09-29 1997-11-06 Russell William Adam Open circuit protection device
DE10311441B4 (en) * 2003-03-15 2005-03-10 Emh Elek Zitaetszaehler Gmbh & Electronic electricity meter
GB2487555B (en) * 2011-01-26 2014-08-27 Rayleigh Instr Ltd Current transformer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1094264A (en) * 1963-07-09 1967-12-06 Elinvac Ltd Electrical resistors and apparatus incorporating them
US3526810A (en) * 1967-03-07 1970-09-01 Cary Instruments Amplifier protection circuit
US4051543A (en) * 1976-01-12 1977-09-27 Mclellan Norvel Jeff Over voltage protector using current monitoring
US4246621A (en) * 1977-07-15 1981-01-20 Yuken Kogyo Company Limited Energizing circuit for solenoid valve
GB2080956A (en) * 1980-07-26 1982-02-10 Marco Robin John Henry A Meter Movement Protection Device
US4414600A (en) * 1981-12-21 1983-11-08 Esquire, Inc. Protection device for high intensity gaseous discharge lamp starting circuit
US4422039A (en) * 1981-04-24 1983-12-20 Brown Boveri Electric Inc. Self-powered ammeter
US4438396A (en) * 1981-07-24 1984-03-20 General Electric Company Low cost volt/ampere meter with liquid crystal display

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1094264A (en) * 1963-07-09 1967-12-06 Elinvac Ltd Electrical resistors and apparatus incorporating them
US3526810A (en) * 1967-03-07 1970-09-01 Cary Instruments Amplifier protection circuit
US4051543A (en) * 1976-01-12 1977-09-27 Mclellan Norvel Jeff Over voltage protector using current monitoring
US4246621A (en) * 1977-07-15 1981-01-20 Yuken Kogyo Company Limited Energizing circuit for solenoid valve
GB2080956A (en) * 1980-07-26 1982-02-10 Marco Robin John Henry A Meter Movement Protection Device
US4422039A (en) * 1981-04-24 1983-12-20 Brown Boveri Electric Inc. Self-powered ammeter
US4438396A (en) * 1981-07-24 1984-03-20 General Electric Company Low cost volt/ampere meter with liquid crystal display
US4414600A (en) * 1981-12-21 1983-11-08 Esquire, Inc. Protection device for high intensity gaseous discharge lamp starting circuit

Also Published As

Publication number Publication date
GB8528280D0 (en) 1985-12-18
GB2183049A (en) 1987-05-28

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921116