FR653532A - Improvements to electrical protection devices for alternating current power transmission circuits - Google Patents

Improvements to electrical protection devices for alternating current power transmission circuits

Info

Publication number
FR653532A
FR653532A FR653532DA FR653532A FR 653532 A FR653532 A FR 653532A FR 653532D A FR653532D A FR 653532DA FR 653532 A FR653532 A FR 653532A
Authority
FR
France
Prior art keywords
power transmission
alternating current
current power
protection devices
transmission circuits
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
Other languages
French (fr)
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.)
Electrical Improvements Ltd
Original Assignee
Electrical Improvements 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 Electrical Improvements Ltd filed Critical Electrical Improvements Ltd
Application granted granted Critical
Publication of FR653532A publication Critical patent/FR653532A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/28—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus
    • H02H3/30—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel
    • H02H3/305—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at two spaced portions of a single system, e.g. at opposite ends of one line, at input and output of apparatus using pilot wires or other signalling channel involving current comparison
FR653532D 1927-04-28 1928-04-27 Improvements to electrical protection devices for alternating current power transmission circuits Expired FR653532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB653532X 1927-04-28

Publications (1)

Publication Number Publication Date
FR653532A true FR653532A (en) 1929-03-22

Family

ID=10490334

Family Applications (1)

Application Number Title Priority Date Filing Date
FR653532D Expired FR653532A (en) 1927-04-28 1928-04-27 Improvements to electrical protection devices for alternating current power transmission circuits

Country Status (2)

Country Link
BE (1) BE653532A (en)
FR (1) FR653532A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913471A (en) * 1987-11-10 1990-04-03 Huneke Gerald L Swivel joint

Also Published As

Publication number Publication date
BE653532A (en) 1965-01-18

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