GB1467331A - Electrical power supply controllers - Google Patents

Electrical power supply controllers

Info

Publication number
GB1467331A
GB1467331A GB680374A GB680374A GB1467331A GB 1467331 A GB1467331 A GB 1467331A GB 680374 A GB680374 A GB 680374A GB 680374 A GB680374 A GB 680374A GB 1467331 A GB1467331 A GB 1467331A
Authority
GB
United Kingdom
Prior art keywords
contactor
load current
level
tripped
power supply
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
GB680374A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB680374A priority Critical patent/GB1467331A/en
Publication of GB1467331A publication Critical patent/GB1467331A/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
    • H02H3/093—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 with timing means

Landscapes

  • Protection Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)

Abstract

1467331 Overcurrent detectors DEFENCE SECRETARY OF STATE FOR 28 Jan 1975 [14 Feb 1974] 6803/74 Addition to 1343981 Heading H2K To render an overload protective arrangement insensitive to acceptable transients, a monostable 7 is triggered if the load current exceeds its normal steady-state level (represented by V 1 ) and the contactor 3 is tripped if the load current is still exceeding this level at the cessation of the monostable output pulse. The contactor is also tripped, without any delay, if the current ever exceeds a second, higher level (V 2 ). The contactor 3 may be a thyristor with an opto-electronic isolator. The load current sensor 4 may be a magnetic amplifier or current transformers.
GB680374A 1975-01-28 1975-01-28 Electrical power supply controllers Expired GB1467331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB680374A GB1467331A (en) 1975-01-28 1975-01-28 Electrical power supply controllers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB680374A GB1467331A (en) 1975-01-28 1975-01-28 Electrical power supply controllers

Publications (1)

Publication Number Publication Date
GB1467331A true GB1467331A (en) 1977-03-16

Family

ID=9821060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB680374A Expired GB1467331A (en) 1975-01-28 1975-01-28 Electrical power supply controllers

Country Status (1)

Country Link
GB (1) GB1467331A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458925A1 (en) * 1979-06-06 1981-01-02 Merlin Gerin Release circuit for overload protection switch - has instantaneous and delayed release achieved using comparators and AND=gates
GB2118790A (en) * 1982-02-16 1983-11-02 Bonar Instr Limited Universal motor control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458925A1 (en) * 1979-06-06 1981-01-02 Merlin Gerin Release circuit for overload protection switch - has instantaneous and delayed release achieved using comparators and AND=gates
GB2118790A (en) * 1982-02-16 1983-11-02 Bonar Instr Limited Universal motor control

Similar Documents

Publication Publication Date Title
GB1288660A (en)
GB897891A (en) Improvements in or relating to overload voltage protection systems
ES433248A1 (en) Short-circuit protection circuit
ES346726A1 (en) Overload protection circuit
ES447481A1 (en) Circuit interrupter with ground fault trip control
GB1069093A (en) Improved circuit breaker control system
GB1288867A (en)
GB1467331A (en) Electrical power supply controllers
GB1115467A (en) Improvements in or relating to electrical circuit protection devices
GB1256780A (en)
GB1031932A (en) A protective device for a super-conductor
GB981752A (en) Improvements in or relating to electrical protective relays
ES448413A1 (en) Long delay acceleration module for an overload relay system
GB1314270A (en) Inductance coil devices
GB1129178A (en) Improvements relating to overload protection in electric supply systems
GB1212419A (en) Improvements relating to electrical protective arrangements
GB1138037A (en) Control for hydroelectric generators
JPS55143625A (en) Delay type current limiting circuit
JPS5794819A (en) Current control system of constant voltage circuit
SU904090A1 (en) Device for overvoltage protection of secondary power supply source and load
GB1209738A (en) Pushbutton-operated overload circuit breaker
SU1026224A1 (en) Process for short-circuit protection of mine contact d.c. network
JPS5585061A (en) Protective circuit for transistor
JPS5355758A (en) Overcurrent relay
GB977132A (en) Load limiter

Legal Events

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