JPS5627200B2 - - Google Patents

Info

Publication number
JPS5627200B2
JPS5627200B2 JP765175A JP765175A JPS5627200B2 JP S5627200 B2 JPS5627200 B2 JP S5627200B2 JP 765175 A JP765175 A JP 765175A JP 765175 A JP765175 A JP 765175A JP S5627200 B2 JPS5627200 B2 JP S5627200B2
Authority
JP
Japan
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
JP765175A
Other languages
Japanese (ja)
Other versions
JPS50107415A (cs
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
Priority claimed from DE19742402423 external-priority patent/DE2402423C3/de
Application filed filed Critical
Publication of JPS50107415A publication Critical patent/JPS50107415A/ja
Publication of JPS5627200B2 publication Critical patent/JPS5627200B2/ja
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
    • 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
    • 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
    • H02H7/0805—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 for synchronous motors
    • 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
    • G01R31/40—Testing power supplies
    • G01R31/42—AC power supplies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Multiple Motors (AREA)
  • Protection Of Generators And Motors (AREA)
  • Centrifugal Separators (AREA)
JP765175A 1974-01-18 1975-01-17 Expired JPS5627200B2 (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742402423 DE2402423C3 (de) 1974-01-18 Verfahren zur Überwachung eines Antriebssystems mit einer Anzahl von Drehfeldmaschinen sowie Überwachungsschaltung zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
JPS50107415A JPS50107415A (cs) 1975-08-23
JPS5627200B2 true JPS5627200B2 (cs) 1981-06-23

Family

ID=5905131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP765175A Expired JPS5627200B2 (cs) 1974-01-18 1975-01-17

Country Status (3)

Country Link
JP (1) JPS5627200B2 (cs)
GB (1) GB1494202A (cs)
NL (1) NL7405749A (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128425B (en) * 1982-10-08 1986-06-25 Newelec Pretoria Stall detection apparatus
EP0276400A3 (en) * 1983-07-11 1989-04-19 Square D Company Mechanically operated pressure switch having solid state components
DE3412541A1 (de) * 1984-04-04 1985-10-31 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg Batterie-ladeanlage
AU569646B2 (en) * 1984-12-18 1988-02-11 Toshiba, Kabushiki Kaisha Detecting critical rotation speed of an induction motor
DE4430557C2 (de) * 1994-08-30 1998-03-19 Seifert Electronic R Verfahren zur Feststellung des Drehzahlverhaltens eines Ventilators, sowie Anordnung zur Durchführung dieses Verfahrens

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4519942Y1 (cs) * 1965-06-04 1970-08-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4519942Y1 (cs) * 1965-06-04 1970-08-12

Also Published As

Publication number Publication date
GB1494202A (en) 1977-12-07
DE2402423B2 (de) 1977-02-03
JPS50107415A (cs) 1975-08-23
NL7405749A (nl) 1976-03-31
DE2402423A1 (de) 1976-04-15

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