GB565134A - Improvements in or relating to protective arrangements for electrical circuits - Google Patents

Improvements in or relating to protective arrangements for electrical circuits

Info

Publication number
GB565134A
GB565134A GB6564/43A GB656443A GB565134A GB 565134 A GB565134 A GB 565134A GB 6564/43 A GB6564/43 A GB 6564/43A GB 656443 A GB656443 A GB 656443A GB 565134 A GB565134 A GB 565134A
Authority
GB
United Kingdom
Prior art keywords
relay
thermistor
resistance element
series
resistance
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
GB6564/43A
Other languages
English (en)
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB565134A publication Critical patent/GB565134A/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
    • H02H3/08—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 excess current
    • H02H3/085—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 excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Control Of Electrical Variables (AREA)
GB6564/43A 1943-04-23 1943-04-23 Improvements in or relating to protective arrangements for electrical circuits Expired GB565134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB252220X 1943-04-23

Publications (1)

Publication Number Publication Date
GB565134A true GB565134A (en) 1944-10-27

Family

ID=10224178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6564/43A Expired GB565134A (en) 1943-04-23 1943-04-23 Improvements in or relating to protective arrangements for electrical circuits

Country Status (4)

Country Link
BE (1) BE472807A (enEXAMPLES)
CH (1) CH252220A (enEXAMPLES)
FR (1) FR942456A (enEXAMPLES)
GB (1) GB565134A (enEXAMPLES)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914747A (en) * 1953-01-30 1959-11-24 Bell Telephone Labor Inc Lockout circuits utilizing thermistor-gas tube combinations
US3002128A (en) * 1957-08-29 1961-09-26 Gen Electric Overload protective means for electrical apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802059A (en) * 1954-07-08 1957-08-06 Bell Telephone Labor Inc Telephone ring-up circuit
FR2210000B1 (enEXAMPLES) * 1972-12-13 1976-01-30 Saparel Fr

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914747A (en) * 1953-01-30 1959-11-24 Bell Telephone Labor Inc Lockout circuits utilizing thermistor-gas tube combinations
US3002128A (en) * 1957-08-29 1961-09-26 Gen Electric Overload protective means for electrical apparatus

Also Published As

Publication number Publication date
FR942456A (fr) 1949-02-09
BE472807A (enEXAMPLES)
CH252220A (de) 1947-12-15

Similar Documents

Publication Publication Date Title
GB557707A (en) Improvements in or relating to relay timing arrangements
GB1513838A (en) Circuit breaker with solid state passive overcurrent sensing device
US3017564A (en) Protective circuit
GB1136836A (en) Leakage current protection switch with excess current release
GB591495A (en) Improvements in telephone substation circuits of the anti-side-tone type
GB565134A (en) Improvements in or relating to protective arrangements for electrical circuits
US3333155A (en) Inverse overcurrent-time delay circuit protective device utilizing nonlinear resistance
GB564822A (en) Improvements in or relating to the breaking of electric circuits under abnormal loadconditions
GB547304A (en) Electric circuit control
GB567222A (en) Improvements in or relating to time controlled switching arrangements
CH348451A (de) Als Installationsselbstschalter ausgebildeter Überstromselbstschalter mit manueller, magnetischer und thermischer Auslösung
GB1235878A (en) Electrical measuring system
GB1208208A (en) Electrical earth-leakage circuit-breakers
GB1309819A (en) Thermistor controlled overload protection circuit
GB565609A (en) Improvements in or relating to thermionic valve circuits
US1927512A (en) Electrical switching device
GB1008473A (en) Improvements in or relating to temperature measurement
GB1185243A (en) Temperature Averaging System
GB838298A (en) Improvements in or relating to electric protective relay devices
GB994514A (en) Improvements in or relating to bistable electrical circuits
GB1312122A (en) Protection circuit
ES224784A1 (es) UN PROCEDIMIENTO, CON SUS DISPOSITIVOS CORRESPONDIENTES, PARA LIMITAR Y REGULAR LAS CARGAS EXCESIVAS EN LiNEAS ELÉCTRICAS
GB558761A (en) Circuit arrangements for resistance elements having a high resistance-temperature coefficient
GB560158A (en) Thermo-sensitive electric relay
GB1049106A (en) Improvements in temperature-dependent switching arrangements