GB1512073A - Protective systems for switches - Google Patents

Protective systems for switches

Info

Publication number
GB1512073A
GB1512073A GB19073/75A GB1907375A GB1512073A GB 1512073 A GB1512073 A GB 1512073A GB 19073/75 A GB19073/75 A GB 19073/75A GB 1907375 A GB1907375 A GB 1907375A GB 1512073 A GB1512073 A GB 1512073A
Authority
GB
United Kingdom
Prior art keywords
switches
protective systems
switched
delay
boehringer
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
GB19073/75A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1512073A publication Critical patent/GB1512073A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H7/10—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 converters; for rectifiers
    • H02H7/12—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 converters; for rectifiers for static converters or rectifiers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation

Abstract

1512073 Protecting electronic switches A BOEHRINGER 7 May 1975 [8 May 1974] 19073/75 Heading H2K A cyclically-operated electronic switching device 3 is immediately switched off if, during an ON period, the voltage across it exceeds a permitted maximum, and is then switched on again after at least a predetermined delay. The delay may be obtained by resetting the circuit 4 which controls the repetitive switching.
GB19073/75A 1974-05-08 1975-05-07 Protective systems for switches Expired GB1512073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2422351A DE2422351A1 (en) 1974-05-08 1974-05-08 OVERLOAD PROTECTION FOR POWER TRANSISTORS, IN PARTICULAR IN PARALLEL OPERATION

Publications (1)

Publication Number Publication Date
GB1512073A true GB1512073A (en) 1978-05-24

Family

ID=5915018

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19073/75A Expired GB1512073A (en) 1974-05-08 1975-05-07 Protective systems for switches

Country Status (4)

Country Link
DE (1) DE2422351A1 (en)
FR (1) FR2270705B1 (en)
GB (1) GB1512073A (en)
IT (1) IT1037934B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236919A (en) * 1989-10-04 1991-04-17 Kone Elevator Gmbh Overload and short-circuit protection of electric output drivers
US5091816A (en) * 1989-10-10 1992-02-25 Kone Elevator Gmbh Procedure and device for overload and short-circuit protection of output drivers

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2617883A1 (en) * 1976-04-23 1977-11-10 Bosch Gmbh Robert PULSE CONTROL CIRCUIT FOR ELECTRIC CONSUMERS
FR2380654A1 (en) * 1977-02-11 1978-09-08 Dba Current limiting system for parallel power amplifiers - is for motor supply circuits and prevents overloading of individual amplifiers using threshold detector
IT1110628B (en) * 1979-01-30 1985-12-23 Sp El Srl CIRCUIT FOR THE AUTOMATIC PROTECTION OF POWER TRANSISTORS, ESPECIALLY FOR SWITCHING CONVERTERS OR SIMILAR
FR2541639B1 (en) * 1983-02-25 1988-06-03 Marchal Equip Auto WIPER SYSTEM WITH OVERLOAD SENSOR CONTROLLING THE REVERSAL OF THE DIRECTION OF BRUSHES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236919A (en) * 1989-10-04 1991-04-17 Kone Elevator Gmbh Overload and short-circuit protection of electric output drivers
GB2236919B (en) * 1989-10-04 1994-03-30 Kone Elevator Gmbh Overload and short-circuit protection circuit
US5091816A (en) * 1989-10-10 1992-02-25 Kone Elevator Gmbh Procedure and device for overload and short-circuit protection of output drivers

Also Published As

Publication number Publication date
DE2422351A1 (en) 1975-11-20
FR2270705B1 (en) 1979-04-27
IT1037934B (en) 1979-11-20
FR2270705A1 (en) 1975-12-05

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Legal Events

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