GB1233245A - - Google Patents

Info

Publication number
GB1233245A
GB1233245A GB1233245DA GB1233245A GB 1233245 A GB1233245 A GB 1233245A GB 1233245D A GB1233245D A GB 1233245DA GB 1233245 A GB1233245 A GB 1233245A
Authority
GB
United Kingdom
Prior art keywords
sept
resistor
circuit
zero sequence
amplifier
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
English (en)
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
Priority claimed from FR75972A external-priority patent/FR1501814A/fr
Application filed filed Critical
Publication of GB1233245A publication Critical patent/GB1233245A/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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Locating Faults (AREA)
GB1233245D 1966-09-12 1968-09-06 Expired GB1233245A (https=)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR75972A FR1501814A (fr) 1966-09-12 1966-09-12 Dispositif permettant la détection ainsi que la mesure de distance des défauts à la terre dans un réseau triphasé avec neutre mise à la terre
FR121614A FR93217E (fr) 1966-09-12 1967-09-20 Dispositif permettant la détection ainsi que la mesure de distance des défauts a le terre dans un réseau triphasé avec neutre mis a la terre.

Publications (1)

Publication Number Publication Date
GB1233245A true GB1233245A (https=) 1971-05-26

Family

ID=8638642

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233245D Expired GB1233245A (https=) 1966-09-12 1968-09-06

Country Status (2)

Country Link
FR (1) FR93217E (https=)
GB (1) GB1233245A (https=)

Also Published As

Publication number Publication date
DE1788026A1 (de) 1972-01-05
FR93217E (fr) 1969-02-28
DE1788026B2 (de) 1976-09-09

Similar Documents

Publication Publication Date Title
GB1448934A (en) Ground fault interrupter
GB1244045A (en) Improvements in or relating to circuit breaking apparatus
GB1133750A (en) Electrical barrier device
GB1393131A (en) Current transformer connection control
GB871957A (en) Improvements in and relating to electrical protective relay systems
GB1140023A (en) Improvements in and relating to distance protective apparatus
GB1334404A (en) Protective device against fault currents in an electric supply line
GB1157733A (en) Overvoltage Protection Circuits
GB1478688A (en) Overcurrent sensing circuit
GB877698A (en) Improvements in and relating to electrical distance protective apparatus
GB977913A (en) Improvements in or relating to electrical apparatus and systems
GB1233245A (https=)
GB1172536A (en) Improvements in Electrical Protective Relays
GB1090292A (en) Circuit arrangement for detecting capacitance changes in capacitor banks in high voltage transmission systems
US2637018A (en) -x i-ipc-
GB1254788A (en) Improvements in or relating to devices for indicating the condition of a switch
GB1097809A (en) Improved circuit breaker control system
GB811958A (en) Improvements in or relating to electrical circuits employing transistors
GB982453A (en) Improvements in transistor circuits
GB1090901A (en) Protective relay apparatus
GB1164542A (en) A Distance Relay Having Quadrilateral Characteristics
GB1116941A (en) Improvements in the protection of electrical circuits including transistors
GB1201877A (en) Earth leakage protection arrangements
GB1169738A (en) Improvements in Alternating Current Power Control
GB966611A (en) Protective arrangements for electrical circuits and apparatus

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee