SE8704220L - SETTING AND DEVICE FOR CONTROL OF OPERATION BY A MEDIUM ASYNCHRONOUS MOTOR DRIVED WATER PUMP - Google Patents

SETTING AND DEVICE FOR CONTROL OF OPERATION BY A MEDIUM ASYNCHRONOUS MOTOR DRIVED WATER PUMP

Info

Publication number
SE8704220L
SE8704220L SE8704220A SE8704220A SE8704220L SE 8704220 L SE8704220 L SE 8704220L SE 8704220 A SE8704220 A SE 8704220A SE 8704220 A SE8704220 A SE 8704220A SE 8704220 L SE8704220 L SE 8704220L
Authority
SE
Sweden
Prior art keywords
setting
asynchronous motor
water pump
control
motor
Prior art date
Application number
SE8704220A
Other languages
Swedish (sv)
Other versions
SE459461B (en
SE8704220D0 (en
Inventor
Hans Andersson
Original Assignee
Hans Andersson
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 Hans Andersson filed Critical Hans Andersson
Priority to SE8704220A priority Critical patent/SE459461B/en
Publication of SE8704220D0 publication Critical patent/SE8704220D0/en
Publication of SE8704220L publication Critical patent/SE8704220L/en
Publication of SE459461B publication Critical patent/SE459461B/en

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
    • 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
    • H02H7/0827—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 responsive to underload or no-load, e.g. pump-off control circuits for pump motors
    • 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
    • H02H7/0833—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 electric motors with control arrangements

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

A sensor is placed in the magnetic field of the asynchronous motor. The output signal from the sensor is an a.c. voltage which includes a component that is at the same frequency as the motor current. If that frequency exceeds, or is less than predetermined values, corresponding to the desired motor speed range, the voltage supply to the motor is cut off. (Provisional basic advised week 89/25)
SE8704220A 1987-10-29 1987-10-29 Drive control for bilge pump driven by asynchronous motor SE459461B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8704220A SE459461B (en) 1987-10-29 1987-10-29 Drive control for bilge pump driven by asynchronous motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8704220A SE459461B (en) 1987-10-29 1987-10-29 Drive control for bilge pump driven by asynchronous motor

Publications (3)

Publication Number Publication Date
SE8704220D0 SE8704220D0 (en) 1987-10-29
SE8704220L true SE8704220L (en) 1989-04-30
SE459461B SE459461B (en) 1989-07-03

Family

ID=20370053

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8704220A SE459461B (en) 1987-10-29 1987-10-29 Drive control for bilge pump driven by asynchronous motor

Country Status (1)

Country Link
SE (1) SE459461B (en)

Also Published As

Publication number Publication date
SE459461B (en) 1989-07-03
SE8704220D0 (en) 1987-10-29

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