GB752488A - Improvements in or relating to electrical time delay relays of the induction type - Google Patents
Improvements in or relating to electrical time delay relays of the induction typeInfo
- Publication number
- GB752488A GB752488A GB11524/54A GB1152454A GB752488A GB 752488 A GB752488 A GB 752488A GB 11524/54 A GB11524/54 A GB 11524/54A GB 1152454 A GB1152454 A GB 1152454A GB 752488 A GB752488 A GB 752488A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- contacts
- time delay
- relay
- delay
- 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
- H01H53/00—Relays using the dynamo-electric effect, i.e. relays in which contacts are opened or closed due to relative movement of current-carrying conductor and magnetic field caused by force of interaction between them
- H01H53/10—Induction relays, i.e. relays in which the interaction is between a magnetic field and current induced thereby in a conductor
- H01H53/12—Ferraris relays
Landscapes
- Breakers (AREA)
Abstract
752,488. Induction relays; protective cutout arrangements. GENERAL ELECTRIC CO. April 21, 1954 [April 23, 1953], No. 11524/54. Class 38(5) An inverse time delay overcurrent relay which, after opening the protected circuit, resets without a delay, comprises an induction disc 15 driven by an electromagnet 21 against the bias of a spring 17 so that an arm 18 on the disc spindle 16 closes contacts 30 when the magnet winding 22 is energized by overcurrent conditions in the protected circuit L1, L2, L3, closure of contacts 30 causing energization of a trip coil 10 to open the breaker 11. A time delay is imparted to the close of contacts 30 by an electromagnet 34 which opposes the rotation of the disc, the magnet winding 35 being energized through a relay 26 which responds immediately to the overload. On opening the breaker 11 the relay 26 opens and since both the magnets 21, 34 are deenergized the disc 15 is returned without a delay by the spring 17 and contacts 30 are instantly opened.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752488XA | 1953-04-23 | 1953-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB752488A true GB752488A (en) | 1956-07-11 |
Family
ID=22124474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11524/54A Expired GB752488A (en) | 1953-04-23 | 1954-04-21 | Improvements in or relating to electrical time delay relays of the induction type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB752488A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2275572A (en) * | 1993-02-25 | 1994-08-31 | Westinghouse Brake & Signal | Vane relay |
-
1954
- 1954-04-21 GB GB11524/54A patent/GB752488A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2275572A (en) * | 1993-02-25 | 1994-08-31 | Westinghouse Brake & Signal | Vane relay |
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