GB982130A - Improvements in shunting resistances for safety devices - Google Patents
Improvements in shunting resistances for safety devicesInfo
- Publication number
- GB982130A GB982130A GB34164A GB34164A GB982130A GB 982130 A GB982130 A GB 982130A GB 34164 A GB34164 A GB 34164A GB 34164 A GB34164 A GB 34164A GB 982130 A GB982130 A GB 982130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- terminals
- coil
- plate
- shunting
- 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
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/22—Elongated resistive element being bent or curved, e.g. sinusoidal, helical
-
- 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
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
-
- 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
- H02H3/24—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 undervoltage or no-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Emergency Protection Circuit Devices (AREA)
- Thermistors And Varistors (AREA)
- Electrostatic Separation (AREA)
Abstract
982,130. Shunting resistances for safety devices. FORGES ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. Jan. 3, 1964 [Jan. 11, 1963], No. 341/64. Heading H1S. A shunting resistance for a safety device comprises a thin plate 60 made of electrically conductive material bearing on each face a conductive electrode 70, 80 in strip form, joining by its ends a pair of terminals 71-72, 81-82, the resistivity of the plate being higher than that of the electrodes. The electrodes 70, 80 may take the form of thin adherent metal strips and be deposited by painting, spraying, atomization or electrolytic deposition either in zig-zag fashion (Fig. 3) or in the form of a spiral (Fig. 4). As shown in Figs. 2 and 3, the terminals 71, 81 are connected by conductors 4A, 5A to a voltage supply and the terminals 72, 82 by conductors 4B, 5B to the energizing coil 1 of a safety relay. A current which effects the shunting of the coil 1 passes between the electrodes 70, 80 through the resistive material, e.g. carbon, of the plate 60. Owing to the arrangement of the 4-terminal circuit, the relay always fails safe in the event of accidental breakage of any one of the conductors 4A, 5A, 4B, 5B or of the coil 1 itself, or of either of the electrodes 70, 80 (Fig. 3), because the current through the coil 1 is interrupted in each of these cases. Any shortcircuit between the electrodes or between the terminals, for example, due to perforation of the plate 60 or to leakage across its surface, also causes the relay to fail safe.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR921085A FR1353016A (en) | 1963-01-11 | 1963-01-11 | Shunt resistors for safety devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB982130A true GB982130A (en) | 1965-02-03 |
Family
ID=8794479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34164A Expired GB982130A (en) | 1963-01-11 | 1964-01-03 | Improvements in shunting resistances for safety devices |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE641429A (en) |
| DE (1) | DE1465535B2 (en) |
| FR (1) | FR1353016A (en) |
| GB (1) | GB982130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586104A (en) * | 1983-12-12 | 1986-04-29 | Rit Research Corp. | Passive overvoltage protection devices, especially for protection of computer equipment connected to data lines |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2834207C2 (en) * | 1978-08-04 | 1984-03-29 | Wabco Westinghouse S.p.A., Turin | Safety resistance |
| FR2842020B1 (en) * | 2002-07-03 | 2004-08-13 | Schneider Electric Ind Sas | AUXILIARY DEVICE FOR CONTROLLING THE OPENING OF A SWITCHING APPARATUS |
| DE102012105411B4 (en) * | 2012-06-21 | 2014-04-03 | Mecomo Ag | Use of a signature resistor element in a backup loop |
-
1963
- 1963-01-11 FR FR921085A patent/FR1353016A/en not_active Expired
- 1963-12-17 BE BE641429D patent/BE641429A/xx unknown
- 1963-12-28 DE DE19631465535 patent/DE1465535B2/en not_active Withdrawn
-
1964
- 1964-01-03 GB GB34164A patent/GB982130A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4586104A (en) * | 1983-12-12 | 1986-04-29 | Rit Research Corp. | Passive overvoltage protection devices, especially for protection of computer equipment connected to data lines |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1353016A (en) | 1964-02-21 |
| DE1465535A1 (en) | 1969-01-30 |
| BE641429A (en) | 1964-01-15 |
| DE1465535B2 (en) | 1971-05-06 |
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