NL7405749A - PROCEDURE FOR MONITORING A DRIVE SYSTEM AND PROCEDURE SWITCHING. - Google Patents

PROCEDURE FOR MONITORING A DRIVE SYSTEM AND PROCEDURE SWITCHING.

Info

Publication number
NL7405749A
NL7405749A NL7405749A NL7405749A NL7405749A NL 7405749 A NL7405749 A NL 7405749A NL 7405749 A NL7405749 A NL 7405749A NL 7405749 A NL7405749 A NL 7405749A NL 7405749 A NL7405749 A NL 7405749A
Authority
NL
Netherlands
Prior art keywords
procedure
monitoring
drive system
switching
procedure switching
Prior art date
Application number
NL7405749A
Other languages
Dutch (nl)
Original Assignee
Siemens Ag
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/en
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of NL7405749A publication Critical patent/NL7405749A/en

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 Electric Motors In General (AREA)
  • Control Of Multiple Motors (AREA)
  • Protection Of Generators And Motors (AREA)
  • Control Of Ac Motors In General (AREA)
  • Centrifugal Separators (AREA)
NL7405749A 1974-01-18 1974-04-29 PROCEDURE FOR MONITORING A DRIVE SYSTEM AND PROCEDURE SWITCHING. NL7405749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742402423 DE2402423C3 (en) 1974-01-18 Method for monitoring a drive system with a number of induction machines and monitoring circuit for carrying out the method

Publications (1)

Publication Number Publication Date
NL7405749A true NL7405749A (en) 1976-03-31

Family

ID=5905131

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7405749A NL7405749A (en) 1974-01-18 1974-04-29 PROCEDURE FOR MONITORING A DRIVE SYSTEM AND PROCEDURE SWITCHING.

Country Status (3)

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

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 (en) * 1984-04-04 1985-10-31 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg BATTERY CHARGER
AU569646B2 (en) * 1984-12-18 1988-02-11 Toshiba, Kabushiki Kaisha Detecting critical rotation speed of an induction motor
DE4430557C2 (en) * 1994-08-30 1998-03-19 Seifert Electronic R Method for determining the speed behavior of a fan and arrangement for carrying out this method

Family Cites Families (1)

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

Also Published As

Publication number Publication date
JPS5627200B2 (en) 1981-06-23
JPS50107415A (en) 1975-08-23
GB1494202A (en) 1977-12-07
DE2402423B2 (en) 1977-02-03
DE2402423A1 (en) 1976-04-15

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
BV The patent application has lapsed