FR526520A - Protection devices for alternating current electrical systems - Google Patents

Protection devices for alternating current electrical systems

Info

Publication number
FR526520A
FR526520A FR526520A FR526520DA FR526520A FR 526520 A FR526520 A FR 526520A FR 526520 A FR526520 A FR 526520A FR 526520D A FR526520D A FR 526520DA FR 526520 A FR526520 A FR 526520A
Authority
FR
France
Prior art keywords
alternating current
protection devices
electrical systems
current electrical
systems
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
FR526520A
Other languages
French (fr)
Inventor
Albert Edward Mc Coll
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
Application granted granted Critical
Publication of FR526520A publication Critical patent/FR526520A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
FR526520A 1917-11-14 1920-01-13 Protection devices for alternating current electrical systems Expired FR526520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB526520X 1917-11-14

Publications (1)

Publication Number Publication Date
FR526520A true FR526520A (en) 1921-10-10

Family

ID=10464752

Family Applications (1)

Application Number Title Priority Date Filing Date
FR526520A Expired FR526520A (en) 1917-11-14 1920-01-13 Protection devices for alternating current electrical systems

Country Status (1)

Country Link
FR (1) FR526520A (en)

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