GB1311950A - Electrical overcurrent protection means - Google Patents

Electrical overcurrent protection means

Info

Publication number
GB1311950A
GB1311950A GB4190170A GB4190170A GB1311950A GB 1311950 A GB1311950 A GB 1311950A GB 4190170 A GB4190170 A GB 4190170A GB 4190170 A GB4190170 A GB 4190170A GB 1311950 A GB1311950 A GB 1311950A
Authority
GB
United Kingdom
Prior art keywords
capacitor
amplifier
fuse
signal
thyristor
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
GB4190170A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1311950A publication Critical patent/GB1311950A/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
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
GB4190170A 1969-09-03 1970-09-02 Electrical overcurrent protection means Expired GB1311950A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1216469A SE341426B (fr) 1969-09-03 1969-09-03

Publications (1)

Publication Number Publication Date
GB1311950A true GB1311950A (en) 1973-03-28

Family

ID=20295265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4190170A Expired GB1311950A (en) 1969-09-03 1970-09-02 Electrical overcurrent protection means

Country Status (2)

Country Link
GB (1) GB1311950A (fr)
SE (1) SE341426B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566594A1 (fr) * 1984-06-22 1985-12-27 Ciapem Circuit de protection d'un moteur electrique a vitesse variable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566594A1 (fr) * 1984-06-22 1985-12-27 Ciapem Circuit de protection d'un moteur electrique a vitesse variable
EP0165864A1 (fr) * 1984-06-22 1985-12-27 Ciapem Circuit de protection d'un moteur électrique à vitesse variable

Also Published As

Publication number Publication date
SE341426B (fr) 1971-12-27

Similar Documents

Publication Publication Date Title
GB1459625A (en) Overcurrent protection circuit for transistor devices
GB1044667A (en) Fast response overload protection circuit
US3309570A (en) Arcless interrupter
SE8106947L (sv) Anordning for skydd mot overhettning och overspenning vid en spenningsbegrensande krets
GB1288867A (fr)
US3488560A (en) Transient potential protection circuit
GB1019245A (en) Improvements in or relating to electrical overload protection apparatus
US3456125A (en) High speed protective circuit for regulating transistors
GB1256780A (fr)
GB1110123A (en) Improvements relating to the protection of semi-conductor apparatus
US3307075A (en) Overcurrent and undercurrent control circuit
GB1311950A (en) Electrical overcurrent protection means
US3578983A (en) Transistor-protecting circuit
US3660720A (en) Automatic grounding switch
GB1192595A (en) Improved Static Electrical Converters
US3407314A (en) Transient protection
GB1031452A (en) Overload protection clrcuit
GB1181853A (en) A Circuit Arrangement for Protecting Transistors in Circuit
GB925027A (en) A protective circuit arrangement for transistors
GB1129178A (en) Improvements relating to overload protection in electric supply systems
GB1078549A (en) Overload (e.g. overcurrent or overvoltage) protection
FR2422277A1 (fr) Dispositif de protection contre les defauts a la terre
GB950183A (en) Improvements in and relating to electrical circuits employing transistor networks
GB1152239A (en) Surge Protection Circuits
JPS55110474A (en) Protective device for television receiver

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees