IT8123345A0 - THERMAL PROTECTION CIRCUIT OF AN ELECTRIC MOTOR INCLUDING TWO TIME CONSTANT PARTS. - Google Patents

THERMAL PROTECTION CIRCUIT OF AN ELECTRIC MOTOR INCLUDING TWO TIME CONSTANT PARTS.

Info

Publication number
IT8123345A0
IT8123345A0 IT8123345A IT2334581A IT8123345A0 IT 8123345 A0 IT8123345 A0 IT 8123345A0 IT 8123345 A IT8123345 A IT 8123345A IT 2334581 A IT2334581 A IT 2334581A IT 8123345 A0 IT8123345 A0 IT 8123345A0
Authority
IT
Italy
Prior art keywords
electric motor
protection circuit
time constant
thermal protection
motor including
Prior art date
Application number
IT8123345A
Other languages
Italian (it)
Other versions
IT1137790B (en
Inventor
Christian Cadet
Gilles Baurand
Bernard Dumortier
Georges Souques
Original Assignee
Telemecanique Electrique
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 Telemecanique Electrique filed Critical Telemecanique Electrique
Publication of IT8123345A0 publication Critical patent/IT8123345A0/en
Application granted granted Critical
Publication of IT1137790B publication Critical patent/IT1137790B/en

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
    • H02H7/08—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
    • H02H7/09—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 against over-voltage; against reduction of voltage; against phase interruption
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H6/00—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images
IT23345/81A 1980-08-04 1981-08-03 THERMAL PROTECTION CIRCUIT OF AN ELECTRIC MOTOR INCLUDING TWO CONSTANT TIME BODIES IT1137790B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8017424A FR2488458A1 (en) 1980-08-04 1980-08-04 THERMAL PROTECTION CIRCUIT OF AN ELECTRIC MOTOR COMPRISING TWO TIME-CONSTANT ORGANS

Publications (2)

Publication Number Publication Date
IT8123345A0 true IT8123345A0 (en) 1981-08-03
IT1137790B IT1137790B (en) 1986-09-10

Family

ID=9244980

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23345/81A IT1137790B (en) 1980-08-04 1981-08-03 THERMAL PROTECTION CIRCUIT OF AN ELECTRIC MOTOR INCLUDING TWO CONSTANT TIME BODIES

Country Status (11)

Country Link
AT (1) AT389961B (en)
BE (1) BE889836A (en)
CH (1) CH642199A5 (en)
DE (1) DE3129730A1 (en)
ES (1) ES8207661A1 (en)
FR (1) FR2488458A1 (en)
GB (1) GB2081995B (en)
IT (1) IT1137790B (en)
NL (1) NL8103660A (en)
NO (1) NO159470C (en)
SE (1) SE447685B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819118A (en) * 1988-06-02 1989-04-04 Westinghouse Electric Corp. Electromagnetic contactor tandem control system for thermal protection of a bidirectional motor drive

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH534444A (en) * 1972-05-23 1973-02-28 Sprecher & Schuh Ag Electronic motor protection relay with current-dependent tripping
CH540587A (en) * 1972-08-22 1973-08-15 Sprecher & Schuh Ag Circuit arrangement that represents a thermal image of electrical equipment that is dependent on electrical losses
DE2600472C3 (en) * 1976-01-08 1981-12-10 Siemens AG, 1000 Berlin und 8000 München Overload protection device for an electrical machine
DE2939938C2 (en) * 1979-09-28 1984-05-30 Siemens AG, 1000 Berlin und 8000 München Overload protection arrangement for an electrical machine
FR2468238A1 (en) * 1979-10-16 1981-04-30 Telemecanique Electrique Phase loss or overvoltage protector for motor - has signal fed to comparator via Zener network and driving cut=off relay in motor supply

Also Published As

Publication number Publication date
DE3129730A1 (en) 1982-02-25
SE8104643L (en) 1982-02-05
DE3129730C2 (en) 1990-05-31
AT389961B (en) 1990-02-26
GB2081995A (en) 1982-02-24
FR2488458A1 (en) 1982-02-12
NO812629L (en) 1982-02-05
ATA341381A (en) 1989-07-15
CH642199A5 (en) 1984-03-30
FR2488458B1 (en) 1984-05-18
SE447685B (en) 1986-12-01
ES504510A0 (en) 1982-09-16
NL8103660A (en) 1982-03-01
IT1137790B (en) 1986-09-10
NO159470B (en) 1988-09-19
GB2081995B (en) 1985-01-09
ES8207661A1 (en) 1982-09-16
NO159470C (en) 1989-01-04
BE889836A (en) 1981-12-01

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