GB2016830A - Device for starting induction motors and providing overload protection therefor - Google Patents

Device for starting induction motors and providing overload protection therefor

Info

Publication number
GB2016830A
GB2016830A GB7909381A GB7909381A GB2016830A GB 2016830 A GB2016830 A GB 2016830A GB 7909381 A GB7909381 A GB 7909381A GB 7909381 A GB7909381 A GB 7909381A GB 2016830 A GB2016830 A GB 2016830A
Authority
GB
United Kingdom
Prior art keywords
switch
motor
disc
line current
overload protection
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.)
Granted
Application number
GB7909381A
Other versions
GB2016830B (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.)
ZERTAN SOC COOPERATIVA IND
Original Assignee
ZERTAN SOC COOPERATIVA IND
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 ZERTAN SOC COOPERATIVA IND filed Critical ZERTAN SOC COOPERATIVA IND
Publication of GB2016830A publication Critical patent/GB2016830A/en
Application granted granted Critical
Publication of GB2016830B publication Critical patent/GB2016830B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Motor And Converter Starters (AREA)

Abstract

A starting and overload protection device for an electric induction motor utilises a posistor (6) as an automatic switch for cutting off the flow of current to an auxiliary winding (13) after a short interval of time from initial switch-on thus diverting the main line current to the motor to the main stator winding (14), and a dished disc temperature operated switch (2) which is mounted centrally to allow the disc to spring from a convex to a concave configuration. A resistor carrying the line current motor produces localised heating in the region of the disc switch (2) and causes the disc switch (2) to flip and break the circuit in the event that the line current to the motor exceeds a design value for a given period of time. The posistor (6) and the temperature operated switch (2) are mounted within a single housing, Fig. 1 (not shown), adapted to be connected to the electricity supply main via terminals (3, 4) and having pins extending from the rear of the housing to allow it to be plugged into a socket (not shown) mounted directly on a motor-compressor unit. <IMAGE>
GB7909381A 1978-03-17 1979-03-16 Device for starting induction motors and providing overload protection therefor Expired GB2016830B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1978234771U ES234771Y (en) 1978-03-17 1978-03-17 SECURITY AND CONTROL DEVICE FOR COMPRESSOR UNITS OF REFRIGERATION MACHINES.

Publications (2)

Publication Number Publication Date
GB2016830A true GB2016830A (en) 1979-09-26
GB2016830B GB2016830B (en) 1982-09-22

Family

ID=8395557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909381A Expired GB2016830B (en) 1978-03-17 1979-03-16 Device for starting induction motors and providing overload protection therefor

Country Status (7)

Country Link
AT (1) AT365794B (en)
DE (1) DE2909952A1 (en)
DK (1) DK108979A (en)
ES (1) ES234771Y (en)
FR (1) FR2420045A1 (en)
GB (1) GB2016830B (en)
IT (1) IT7921085V0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1209785B (en) * 1980-05-12 1989-08-30 Necchi Spa STARTING DEVICE AND THERMAL PROTECTOR IN MOTOR-COMPRESSORS FOR REFRIGERATING SYSTEMS.
FR2501304B1 (en) * 1981-03-03 1986-08-22 Realisations Diffusion Ind METHOD AND DEVICE FOR PROTECTING THE ENGINE OF A HERMETIC COMPRESSOR ENGINE ASSEMBLY
DE10051752A1 (en) * 2000-10-18 2002-05-02 Bock Gmbh & Co Kaeltemaschinen Compressor for refrigerants in a cooling circuit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB542181A (en) * 1939-07-13 1941-12-30 Westinghouse Electric Int Co Improvements in or relating to electric translating devices embodying thermal protective apparatus
GB963896A (en) * 1960-01-27 1964-07-15 Clausen M Improvements in or relating to protective devices for electric motors
US3109078A (en) * 1961-09-01 1963-10-29 Mechanical Products Inc Combination motor start relay and overload protector
DE1293325B (en) * 1965-01-20 1969-04-24 Danfoss As Starting device for a single-phase motor of an encapsulated refrigeration machine
DE1663114B1 (en) * 1965-01-20 1970-01-15 Danfoss As Electric motor with resistance auxiliary phase
US3695054A (en) * 1971-05-25 1972-10-03 Carrier Corp Control circuit for an air conditioning system
DE2543260A1 (en) * 1975-09-27 1977-04-07 Licentia Gmbh Starter for single-phase refrigerator motor - has PTC resistor incorporated into thermostat to reduce restart time
US4092573A (en) * 1975-12-22 1978-05-30 Texas Instruments Incorporated Motor starting and protecting apparatus

Also Published As

Publication number Publication date
DK108979A (en) 1979-09-18
ES234771Y (en) 1978-10-01
IT7921085V0 (en) 1979-03-15
FR2420045B1 (en) 1984-02-10
AT365794B (en) 1982-02-10
GB2016830B (en) 1982-09-22
FR2420045A1 (en) 1979-10-12
ATA200879A (en) 1981-06-15
ES234771U (en) 1978-05-01
DE2909952A1 (en) 1979-09-27

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Legal Events

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