GB262777A - Improvements in or relating to combined overload and reverse current switches - Google Patents
Improvements in or relating to combined overload and reverse current switchesInfo
- Publication number
- GB262777A GB262777A GB31007/26A GB3100726A GB262777A GB 262777 A GB262777 A GB 262777A GB 31007/26 A GB31007/26 A GB 31007/26A GB 3100726 A GB3100726 A GB 3100726A GB 262777 A GB262777 A GB 262777A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- coil
- switch
- reverse
- reverse current
- 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
- 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
- H02H3/08—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 excess current
- H02H3/081—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 excess current and depending on the direction
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
262,777. Siemens - Schuckertwerke Ges.- Dec. 8,1925, [Convention date]. Electromagnetic switches; cut-out arrangements. - A discriminating reverse-current and overload switch for use at a, b, c, d, Fig. 2, to protect rotary converters g<1>, g<2>, rectifiers u<1>, u<2> &c. supplying the same bus-bar s in parallel has a switching period shorter with reverse current than with current of normal direction, the operating flux reaching the release point more quickly in the case of reverse current than with normal. The switch comprises a magnet structure with a coil g energized from a constant voltage, this coil alone being adequate to attract the armature h and break the main circuit at k<1>, k<2>. The magnet structure is provided also with a series coil f which with current in the normal direction opposes g. A heavy current in this direction is therefore necessary to overcome the action of the coil g and cause the operation of the switch, whereas at zero current or any reversal of current the switch opeates. The line element is furnished by the use of short-circuited bands on the core which retard the growth of the flux- Specification 240,453 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE262777X | 1925-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB262777A true GB262777A (en) | 1927-09-15 |
Family
ID=5981059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31007/26A Expired GB262777A (en) | 1925-12-08 | 1926-12-07 | Improvements in or relating to combined overload and reverse current switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB262777A (en) |
-
1926
- 1926-12-07 GB GB31007/26A patent/GB262777A/en not_active Expired
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