IT1195933B - VALVE OPERATING DEVICE - Google Patents

VALVE OPERATING DEVICE

Info

Publication number
IT1195933B
IT1195933B IT21979/82A IT2197982A IT1195933B IT 1195933 B IT1195933 B IT 1195933B IT 21979/82 A IT21979/82 A IT 21979/82A IT 2197982 A IT2197982 A IT 2197982A IT 1195933 B IT1195933 B IT 1195933B
Authority
IT
Italy
Prior art keywords
operating device
valve operating
valve
operating
Prior art date
Application number
IT21979/82A
Other languages
Italian (it)
Other versions
IT8221979A0 (en
Inventor
Jeremy J Fry
Donald L Hore
Original Assignee
Rotork Controls
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 Rotork Controls filed Critical Rotork Controls
Publication of IT8221979A0 publication Critical patent/IT8221979A0/en
Application granted granted Critical
Publication of IT1195933B publication Critical patent/IT1195933B/en

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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Electric Motors In General (AREA)
IT21979/82A 1981-06-25 1982-06-22 VALVE OPERATING DEVICE IT1195933B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8119570 1981-06-25
GB8200881 1982-01-13

Publications (2)

Publication Number Publication Date
IT8221979A0 IT8221979A0 (en) 1982-06-22
IT1195933B true IT1195933B (en) 1988-11-03

Family

ID=26279905

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21979/82A IT1195933B (en) 1981-06-25 1982-06-22 VALVE OPERATING DEVICE

Country Status (5)

Country Link
DE (1) DE3222725A1 (en)
FR (1) FR2508673A1 (en)
GB (1) GB2116790B (en)
IN (1) IN156532B (en)
IT (1) IT1195933B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8431691D0 (en) * 1984-12-14 1985-01-30 Smiths Industries Plc Phase control
DE19707171A1 (en) * 1997-02-22 1998-08-27 Valeo Klimasysteme Gmbh Actuator control
FR2761521A1 (en) * 1997-04-01 1998-10-02 Schneider Electric Sa Inverter system for electrical drives
DE10103310A1 (en) * 2001-01-25 2002-08-14 Peter Krause Safety circuit for three-phase AC appliance e.g. electric motor, and connections, uses reduced voltage trip in switching appliance
EP1333207B1 (en) 2002-02-01 2005-08-03 Vetco Gray Controls Limited Linear actuators
DE10205664B4 (en) * 2002-02-12 2017-08-10 Stiebel Eltron Gmbh & Co. Kg Circuit for a three-phase motor
CN104600662B (en) * 2015-03-02 2017-06-20 臧垒 A kind of three-phase four-wire power entangles phase protection device automatically

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214664A (en) * 1961-08-15 1965-10-26 Kito Seisakusho Kk Reversible polyphase motor with phase protective device
GB1032468A (en) * 1963-08-21 1966-06-08 Kito Seisakusho Kk A safety device for use for a three-phase electrical system
US3334273A (en) * 1965-07-12 1967-08-01 Thermo King Corp Control device for poly-phase electrical system
GB1208562A (en) * 1966-04-05 1970-10-14 Avery Hardoll Ltd Improvements in and relating to liquid dispensing apparatus
GB1144188A (en) * 1966-12-15 1969-03-05 Rotork Eng Co Ltd Improvements in or relating to electric motor operated actuators
GB1191527A (en) * 1967-08-07 1970-05-13 Inouye Shokai Kk Hydraulically-Actuated Flexible Chamber Pumps.
US4021704A (en) * 1976-02-27 1977-05-03 Borg-Warner Corporation Phase sequence correcting system for three-phase AC power

Also Published As

Publication number Publication date
IN156532B (en) 1985-08-31
IT8221979A0 (en) 1982-06-22
DE3222725A1 (en) 1983-01-27
FR2508673A1 (en) 1982-12-31
GB2116790A (en) 1983-09-28
GB2116790B (en) 1985-06-19

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