FR2305109A7 - Temp monitor for motor windings - has fusible tin foil enclosed by excitation winding and in series with it in its cast - Google Patents

Temp monitor for motor windings - has fusible tin foil enclosed by excitation winding and in series with it in its cast

Info

Publication number
FR2305109A7
FR2305109A7 FR7607316A FR7607316A FR2305109A7 FR 2305109 A7 FR2305109 A7 FR 2305109A7 FR 7607316 A FR7607316 A FR 7607316A FR 7607316 A FR7607316 A FR 7607316A FR 2305109 A7 FR2305109 A7 FR 2305109A7
Authority
FR
France
Prior art keywords
tin foil
excitation winding
series
motor windings
cast
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
FR7607316A
Other languages
French (fr)
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.)
Siemens AG
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
Application filed by Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of FR2305109A7 publication Critical patent/FR2305109A7/en
Expired legal-status Critical Current

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
    • H02H7/0852—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 directly responsive to abnormal temperature by using a temperature sensor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/06—Fusible members characterised by the fusible material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)

Abstract

The temperature monitor is intended for electric motor windings and consists of a fusible tin foil (2) connected in series with the motor excitation winding and interrupting the latter supply current on overloading. The tin foil is located inside the casting (1) that contains the excitation winding (3) and is connected at one end to one end of this winding and at the other end to one (7) of the external terminals. The external terminals are set into the side of the casting. The tin foil is chosen to melt below 250 deg.C. The advantage of the arrangement lies in its being a very cheap method of providing an overload protection.
FR7607316A 1975-03-20 1976-03-15 Temp monitor for motor windings - has fusible tin foil enclosed by excitation winding and in series with it in its cast Expired FR2305109A7 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2512282 1975-03-20

Publications (1)

Publication Number Publication Date
FR2305109A7 true FR2305109A7 (en) 1976-10-15

Family

ID=5941941

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7607316A Expired FR2305109A7 (en) 1975-03-20 1976-03-15 Temp monitor for motor windings - has fusible tin foil enclosed by excitation winding and in series with it in its cast

Country Status (3)

Country Link
BE (1) BE839714A (en)
FR (1) FR2305109A7 (en)
IT (1) IT1056983B (en)

Also Published As

Publication number Publication date
BE839714A (en) 1976-07-16
IT1056983B (en) 1982-02-20

Similar Documents

Publication Publication Date Title
HK64781A (en) Electrical current overload fuses
DE2965528D1 (en) Overcurrent protection circuitry for an electric motor driving circuit
SE8302616D0 (en) THERMAL MODEL FOR ELECTRICAL APPARATUS
FR2309066A1 (en) COOLING CIRCUIT OF THE ROTOR OF AN ELECTRIC MACHINE CONTAINING A SUPPRACONDUCTOR EXCITATION WINDING
ES8105891A1 (en) Detector device for overcurrents and the loss of one or two phases.
GB1467216A (en) Thermal protection of coil windings
SE8102938L (en) ELECTRICAL STARTING CIRCUIT WITH THERMAL CIRCUIT
GB1556312A (en) Enclosing structure for an electric fuse
ES2079463T3 (en) PROTECTION FOR AN ELECTRICALLY MOVED DEVICE.
FR2455560A1 (en) Electromotor with encapsulated thermal protection switch - is built into slot closure piece of stator and rotor winding slots
FR2305109A7 (en) Temp monitor for motor windings - has fusible tin foil enclosed by excitation winding and in series with it in its cast
GB1543023A (en) Electric circuit breaker with load current tripping unit
JPS5337806A (en) Motor starting overload protector
GB921669A (en) Improvements in and relating to squirrel cage motors
FR2295615A1 (en) ELECTRICAL SUPPLY CIRCUIT, ESPECIALLY FOR THE EXCITATION COIL OF AN ELECTRIC MOTOR
JPS5644392A (en) Controlling system of pole change type motor block
JPS5457241A (en) Heat-sensitive body
JPS5327038A (en) Protecting circuit for thermal head
GB1111240A (en) Improvements relating to over-temperature protective arrangements for electrical apparatus
ES8306937A1 (en) Circuit arrangement for preventing re-establishment of the starting condition in an electric single-phase motor
JPS5310017A (en) Field monitoring device of brushless synchronous motor
SU792423A2 (en) Device for overload protection of electric mains
FR2455809A1 (en) Electromotor with encapsulated thermal protection switch - is built into slot closure piece of stator and rotor winding slots
JPS5220249A (en) Protective means for motor
SU603040A1 (en) Device for maximum current protection of electric plant from short-circuiting and overload