FR1027262A - Improved earth loss protection device for polyphase alternating current dynamo-electric machines and other devices - Google Patents

Improved earth loss protection device for polyphase alternating current dynamo-electric machines and other devices

Info

Publication number
FR1027262A
FR1027262A FR1027262DA FR1027262A FR 1027262 A FR1027262 A FR 1027262A FR 1027262D A FR1027262D A FR 1027262DA FR 1027262 A FR1027262 A FR 1027262A
Authority
FR
France
Prior art keywords
devices
alternating current
protection device
electric machines
loss protection
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.)
ANDERSON
Anderson Boyes and Co Ltd
Original Assignee
ANDERSON
Anderson Boyes 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 ANDERSON, Anderson Boyes and Co Ltd filed Critical ANDERSON
Application granted granted Critical
Publication of FR1027262A publication Critical patent/FR1027262A/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
    • H02H3/32—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/347—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 corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system using summation current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
FR1027262D 1949-11-15 1950-11-06 Improved earth loss protection device for polyphase alternating current dynamo-electric machines and other devices Expired FR1027262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1027262X 1949-11-15

Publications (1)

Publication Number Publication Date
FR1027262A true FR1027262A (en) 1953-05-11

Family

ID=10868932

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1027262D Expired FR1027262A (en) 1949-11-15 1950-11-06 Improved earth loss protection device for polyphase alternating current dynamo-electric machines and other devices

Country Status (1)

Country Link
FR (1) FR1027262A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935652A (en) * 1955-07-21 1960-05-03 Cardinal Control Company Inc Automatic protective device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935652A (en) * 1955-07-21 1960-05-03 Cardinal Control Company Inc Automatic protective device

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