JPS57199492A - Method of monitoring effective current in dc machine and electronic overload preventing safety device - Google Patents

Method of monitoring effective current in dc machine and electronic overload preventing safety device

Info

Publication number
JPS57199492A
JPS57199492A JP57085651A JP8565182A JPS57199492A JP S57199492 A JPS57199492 A JP S57199492A JP 57085651 A JP57085651 A JP 57085651A JP 8565182 A JP8565182 A JP 8565182A JP S57199492 A JPS57199492 A JP S57199492A
Authority
JP
Japan
Prior art keywords
machine
safety device
effective current
preventing safety
electronic overload
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.)
Pending
Application number
JP57085651A
Other languages
Japanese (ja)
Inventor
Shiyoonen Manfureeto
Haine Hansuuhaagen
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Publication of JPS57199492A publication Critical patent/JPS57199492A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • 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
    • H02H7/0811—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 dc motors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Control Of Electric Motors In General (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Control Of Direct Current Motors (AREA)
  • Fuses (AREA)
  • Control Of Voltage And Current In General (AREA)
JP57085651A 1981-05-25 1982-05-20 Method of monitoring effective current in dc machine and electronic overload preventing safety device Pending JPS57199492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3121779A DE3121779C2 (en) 1981-05-25 1981-05-25 Method for monitoring the effective current in DC machines to prevent overload and electronic overload protection for carrying out the method

Publications (1)

Publication Number Publication Date
JPS57199492A true JPS57199492A (en) 1982-12-07

Family

ID=6133693

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57085651A Pending JPS57199492A (en) 1981-05-25 1982-05-20 Method of monitoring effective current in dc machine and electronic overload preventing safety device

Country Status (10)

Country Link
JP (1) JPS57199492A (en)
BE (1) BE893263A (en)
CS (1) CS233724B2 (en)
DD (1) DD202082A5 (en)
DE (1) DE3121779C2 (en)
ES (1) ES8303708A1 (en)
FR (1) FR2506535A1 (en)
GB (1) GB2101430B (en)
IT (1) IT1218315B (en)
RO (1) RO83801B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141884A (en) * 1983-05-18 1985-01-03 R L & D Limited Electric water heaters
GB2154813A (en) * 1984-02-28 1985-09-11 Dolphin Showers Limited Electric water heaters
DE3914312A1 (en) * 1989-04-29 1990-10-31 Telefunken Electronic Gmbh Motor overload detection circuit for hand-tool - compares current and voltage values obtained from current flux angle and motor revs
DE102005038225A1 (en) 2005-08-12 2007-02-15 Robert Bosch Gmbh Method and device for overload detection in hand tools
DE102007013551A1 (en) 2007-03-19 2008-09-25 Siemens Ag Method for automatically setting a protective device having an overcurrent release, in particular a low-voltage circuit breaker
US10965240B2 (en) 2018-08-30 2021-03-30 Texas Instruments Incorporated Method and circuit for detecting motor winding over temperature

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2630407A1 (en) * 1976-07-06 1978-01-12 Siemens Ag DEVICE FOR MONITORING THE HEATING OF A CURRENT ELECTRICAL DEVICE
JPS55157927A (en) * 1979-05-24 1980-12-09 Fuji Electric Co Ltd Electronic overload protecting device
DE2922197A1 (en) * 1979-05-31 1980-12-04 Hirschmann Radiotechnik AUTOMATIC OVERLOAD SHUTDOWN DEVICE FOR DC MOTOR DRIVES
US4291355A (en) * 1979-07-30 1981-09-22 General Electric Company Programmable overload circuit

Also Published As

Publication number Publication date
GB2101430A (en) 1983-01-12
GB2101430B (en) 1985-01-09
DE3121779C2 (en) 1984-02-02
IT1218315B (en) 1990-04-12
DD202082A5 (en) 1983-08-24
ES510277A0 (en) 1983-02-01
IT8220165A0 (en) 1982-03-15
FR2506535A1 (en) 1982-11-26
BE893263A (en) 1982-09-16
RO83801B (en) 1984-04-30
RO83801A (en) 1984-04-02
CS233724B2 (en) 1985-03-14
DE3121779A1 (en) 1982-12-23
ES8303708A1 (en) 1983-02-01

Similar Documents

Publication Publication Date Title
GB2195253B (en) Contraceptive method and device employing electric forces
DE3462526D1 (en) Electronic safety device for electric iron
GB2191858B (en) Monitoring method and device
NZ191331A (en) Electronic totalizator system safeguarding and restoration after "power out" condition
GB2152305B (en) Circuit arrangement for controlling and monitoring electrical loads
GB2091129B (en) Jar mill monitoring instrumentation and method
JPS57149992A (en) Method and device of calibrating power monitoring unit in situ
EP0413893A3 (en) Process and circuit for monitoring of regulating elements with electric motors
JPS57199492A (en) Method of monitoring effective current in dc machine and electronic overload preventing safety device
JPS5772177A (en) Power removing method and device
EP0534250A3 (en) Method and device to protect an ac circuit
DE3373394D1 (en) Current limiter and method for limiting current
GB2219665B (en) Method and device for insulation condition monitoring
DE3469249D1 (en) Direct current power control circuit with condition signalling and protection against overload and short-circuiting
DE3573868D1 (en) Short circuit and overload monitoring device for proximity switches
DE3175769D1 (en) Battery voltage monitoring and indicating apparatus
JPS57160323A (en) Line current monitoring method and device
EP0459694A3 (en) Circuit and method for monitoring voltage pulse widths
IL81747A0 (en) Method and device for electronic protection of an electric motor
GB2174194B (en) Monitoring device and method
IL97338A0 (en) Method and circuit arrangement for level monitoring
DE3279462D1 (en) Lead frames for electronic and electric devices
PL235051A1 (en) Method of and electronic relay for monitoring voltage decay in three-phase network
GB2221806B (en) Inverter short circuit protection method and apparatus
JPS57180835A (en) Automatic load breaking method and device