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GB2025170B - Protectionsystem for electric motors - Google Patents

Protectionsystem for electric motors

Info

Publication number
GB2025170B
GB2025170B GB7919519A GB7919519A GB2025170B GB 2025170 B GB2025170 B GB 2025170B GB 7919519 A GB7919519 A GB 7919519A GB 7919519 A GB7919519 A GB 7919519A GB 2025170 B GB2025170 B GB 2025170B
Authority
GB
United Kingdom
Prior art keywords
protectionsystem
electric motors
motors
electric
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
GB7919519A
Other versions
GB2025170A (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.)
LAPSKER A
Original Assignee
LAPSKER A
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 LAPSKER A filed Critical LAPSKER A
Publication of GB2025170A publication Critical patent/GB2025170A/en
Application granted granted Critical
Publication of GB2025170B publication Critical patent/GB2025170B/en
Expired 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
GB7919519A 1978-06-06 1979-06-05 Protectionsystem for electric motors Expired GB2025170B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL54866A IL54866A (en) 1978-06-06 1978-06-06 Low winding resistance protective system for electric motors

Publications (2)

Publication Number Publication Date
GB2025170A GB2025170A (en) 1980-01-16
GB2025170B true GB2025170B (en) 1982-07-21

Family

ID=11050349

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7919519A Expired GB2025170B (en) 1978-06-06 1979-06-05 Protectionsystem for electric motors

Country Status (2)

Country Link
GB (1) GB2025170B (en)
IL (1) IL54866A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3034904A1 (en) * 1980-09-16 1982-04-29 Marine Safe Electronics of Canada Ltd., Concord, Ontario Electric motor low windings resistance protection system - compares windings resistance when motor is at rest with threshold value
JP4554501B2 (en) * 2005-01-18 2010-09-29 ファナック株式会社 Motor insulation resistance deterioration detection method, insulation resistance deterioration detection device, and motor drive device

Also Published As

Publication number Publication date
IL54866A (en) 1981-07-31
GB2025170A (en) 1980-01-16
IL54866A0 (en) 1978-08-31

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990604