GB297193A - Apparatus for the prevention of too quick operation or reversal of electric motors - Google Patents
Apparatus for the prevention of too quick operation or reversal of electric motorsInfo
- Publication number
- GB297193A GB297193A GB20311/27A GB2031127A GB297193A GB 297193 A GB297193 A GB 297193A GB 20311/27 A GB20311/27 A GB 20311/27A GB 2031127 A GB2031127 A GB 2031127A GB 297193 A GB297193 A GB 297193A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reversal
- motor
- switch
- prevention
- electric motors
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
297,193. Scott, W. H. Aug. 2, 1927. Master control systems ; safety arrangements. -An electromagnetic switch 7 for controlling a circuit containing a motor 1 has, in addition to the operating magnet 6, an auxiliary magnet 13 connected to an inductive coil 2, which may be the motor shunt-field winding. The coil 13 becomes inductively energized immediately after the switch 7 is opened, and while so energized delays or prevents reclosure of the switch. The invention may serve to safeguard a motor against too sudden reversal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20311/27A GB297193A (en) | 1927-08-02 | 1927-08-02 | Apparatus for the prevention of too quick operation or reversal of electric motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20311/27A GB297193A (en) | 1927-08-02 | 1927-08-02 | Apparatus for the prevention of too quick operation or reversal of electric motors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB297193A true GB297193A (en) | 1928-09-20 |
Family
ID=10143871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20311/27A Expired GB297193A (en) | 1927-08-02 | 1927-08-02 | Apparatus for the prevention of too quick operation or reversal of electric motors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB297193A (en) |
-
1927
- 1927-08-02 GB GB20311/27A patent/GB297193A/en not_active Expired
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