GB2081995B - Thermal simulators for protecting electric motors - Google Patents

Thermal simulators for protecting electric motors

Info

Publication number
GB2081995B
GB2081995B GB8123751A GB8123751A GB2081995B GB 2081995 B GB2081995 B GB 2081995B GB 8123751 A GB8123751 A GB 8123751A GB 8123751 A GB8123751 A GB 8123751A GB 2081995 B GB2081995 B GB 2081995B
Authority
GB
United Kingdom
Prior art keywords
electric motors
protecting electric
thermal simulators
simulators
thermal
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
GB8123751A
Other versions
GB2081995A (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.)
Telemecanique SA
Original Assignee
Telemecanique Electrique SA
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 SA filed Critical Telemecanique Electrique SA
Publication of GB2081995A publication Critical patent/GB2081995A/en
Application granted granted Critical
Publication of GB2081995B publication Critical patent/GB2081995B/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
    • H02H7/08—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
GB8123751A 1980-08-04 1981-08-04 Thermal simulators for protecting electric motors Expired GB2081995B (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
GB2081995A GB2081995A (en) 1982-02-24
GB2081995B true GB2081995B (en) 1985-01-09

Family

ID=9244980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8123751A Expired GB2081995B (en) 1980-08-04 1981-08-04 Thermal simulators for protecting electric motors

Country Status (11)

Country Link
AT (1) AT389961B (en)
BE (1) BE889836A (en)
CH (1) CH642199A5 (en)
DE (1) DE3129730A1 (en)
ES (1) ES504510A0 (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
BE889836A (en) 1981-12-01
SE447685B (en) 1986-12-01
FR2488458A1 (en) 1982-02-12
ES8207661A1 (en) 1982-09-16
GB2081995A (en) 1982-02-24
DE3129730A1 (en) 1982-02-25
FR2488458B1 (en) 1984-05-18
AT389961B (en) 1990-02-26
NO159470C (en) 1989-01-04
DE3129730C2 (en) 1990-05-31
ES504510A0 (en) 1982-09-16
NO159470B (en) 1988-09-19
IT8123345A0 (en) 1981-08-03
NO812629L (en) 1982-02-05
ATA341381A (en) 1989-07-15
IT1137790B (en) 1986-09-10
NL8103660A (en) 1982-03-01
CH642199A5 (en) 1984-03-30
SE8104643L (en) 1982-02-05

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Legal Events

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

Effective date: 19930804