GB298678A - Improvements in or relating to electric protective systems - Google Patents

Improvements in or relating to electric protective systems

Info

Publication number
GB298678A
GB298678A GB1881527A GB1881527A GB298678A GB 298678 A GB298678 A GB 298678A GB 1881527 A GB1881527 A GB 1881527A GB 1881527 A GB1881527 A GB 1881527A GB 298678 A GB298678 A GB 298678A
Authority
GB
United Kingdom
Prior art keywords
relating
protective systems
electric protective
electric
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
GB1881527A
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.)
A Reyrolle and Co Ltd
Original Assignee
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 A Reyrolle and Co Ltd filed Critical A Reyrolle and Co Ltd
Priority to GB1881527A priority Critical patent/GB298678A/en
Publication of GB298678A publication Critical patent/GB298678A/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)
GB1881527A 1927-07-15 1927-07-15 Improvements in or relating to electric protective systems Expired GB298678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1881527A GB298678A (en) 1927-07-15 1927-07-15 Improvements in or relating to electric protective systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1881527A GB298678A (en) 1927-07-15 1927-07-15 Improvements in or relating to electric protective systems

Publications (1)

Publication Number Publication Date
GB298678A true GB298678A (en) 1928-10-15

Family

ID=10118877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1881527A Expired GB298678A (en) 1927-07-15 1927-07-15 Improvements in or relating to electric protective systems

Country Status (1)

Country Link
GB (1) GB298678A (en)

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