GB1423158A - Overload interrupt system for threephase induction motors - Google Patents

Overload interrupt system for threephase induction motors

Info

Publication number
GB1423158A
GB1423158A GB5839172A GB5839172A GB1423158A GB 1423158 A GB1423158 A GB 1423158A GB 5839172 A GB5839172 A GB 5839172A GB 5839172 A GB5839172 A GB 5839172A GB 1423158 A GB1423158 A GB 1423158A
Authority
GB
United Kingdom
Prior art keywords
voltage
relay
load
phase
under
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
GB5839172A
Other languages
English (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.)
SHARNOA Ltd
Original Assignee
SHARNOA Ltd
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 SHARNOA Ltd filed Critical SHARNOA Ltd
Publication of GB1423158A publication Critical patent/GB1423158A/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
    • H02H7/085—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 excessive load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/38—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to both voltage and current; responsive to phase angle between voltage and current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/38—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage

Landscapes

  • Protection Of Generators And Motors (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Multiple Motors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Motor And Converter Starters (AREA)
GB5839172A 1971-12-27 1972-12-18 Overload interrupt system for threephase induction motors Expired GB1423158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL38457A IL38457A (en) 1971-12-27 1971-12-27 Overload interrupt systems for three-phase induction motor

Publications (1)

Publication Number Publication Date
GB1423158A true GB1423158A (en) 1976-01-28

Family

ID=11046269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5839172A Expired GB1423158A (en) 1971-12-27 1972-12-18 Overload interrupt system for threephase induction motors

Country Status (12)

Country Link
AT (1) AT324475B (enrdf_load_stackoverflow)
AU (1) AU466358B2 (enrdf_load_stackoverflow)
BE (1) BE793355A (enrdf_load_stackoverflow)
CH (1) CH547025A (enrdf_load_stackoverflow)
DE (1) DE2260786A1 (enrdf_load_stackoverflow)
ES (1) ES410087A1 (enrdf_load_stackoverflow)
FR (1) FR2165985B1 (enrdf_load_stackoverflow)
GB (1) GB1423158A (enrdf_load_stackoverflow)
IL (1) IL38457A (enrdf_load_stackoverflow)
NL (1) NL7217420A (enrdf_load_stackoverflow)
RO (1) RO64898A (enrdf_load_stackoverflow)
ZA (1) ZA728249B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704820A1 (de) * 1977-02-05 1978-08-17 Eller Vertriebs Ingbuero Ueberlastschutzschaltung fuer elektrische motoren
DE3617452A1 (de) * 1986-05-23 1987-11-26 Klein Schanzlin & Becker Ag Verfahren zur ueberwachung einer asynchronmaschine

Also Published As

Publication number Publication date
ES410087A1 (es) 1975-12-01
ZA728249B (en) 1973-08-29
AU466358B2 (en) 1975-10-30
AU4923072A (en) 1974-05-23
AT324475B (de) 1975-09-10
NL7217420A (enrdf_load_stackoverflow) 1973-06-29
FR2165985A1 (enrdf_load_stackoverflow) 1973-08-10
FR2165985B1 (enrdf_load_stackoverflow) 1977-04-22
IL38457A0 (en) 1972-02-29
IL38457A (en) 1975-02-10
BE793355A (fr) 1973-04-16
RO64898A (fr) 1979-07-15
DE2260786A1 (de) 1973-07-05
CH547025A (de) 1974-03-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee