GB730346A - Improvements in electric circuit-breaker devices - Google Patents
Improvements in electric circuit-breaker devicesInfo
- Publication number
- GB730346A GB730346A GB12350/53A GB1235053A GB730346A GB 730346 A GB730346 A GB 730346A GB 12350/53 A GB12350/53 A GB 12350/53A GB 1235053 A GB1235053 A GB 1235053A GB 730346 A GB730346 A GB 730346A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- circuit
- resistance
- breaker
- chamber
- 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
- H01H87/00—Protective devices in which a current flowing through a liquid or solid is interrupted by the evaporation of the liquid or by the melting and evaporation of the solid when the current becomes excessive, the circuit continuity being reestablished on cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/02—Liquid resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/161—Variable impedances
- H01H33/162—Liquid resistors
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/04—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrothermal opening
-
- 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
- H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Cold Cathode And The Manufacture (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
730,346. Protective cut-out arrangements; conducting liquid switches; controllers. BENCHEMOUL, N. R. May 4, 1953 [May 7, 1952], No. 12350/53. Classes 38 (3) and 38 (5). In a circuit-breaking arrangement for an apparatus 1, Fig. 1, supplied from terminals 2, the increase of resistance of a liquid resistance apparatus 3 in the event of excess current conditions causes a drop in the voltage across the winding 14 of a circuit-breaker 15 which opens to interrupt the supply. The apparatus 3 comprises a small chamber 7 enclosing electrodes 4, 5 and communicating via small passages 8, 9 with a vessel 10, the chamber and vessel being filled with conducting liquid. Under normal conditions, the heat evolved by the current passing through the liquid in the chamber 7 is dissipated by the circulation of liquid through the passages, but under heavy overload conditions, the liquid in the chamber 7 is vaporized and the resulting considerable increase in resistance causes the drop in voltage across the winding 14 and reduces the current flowing in the circuit so that circuit-breaker does not have to interrupt the full overload current. Under moderate overload conditions the slow vaporization of the liquid may result in an alternate rise and fall in the resistance of the apparatus 3 without causing the opening of the circuit-breaker 15. This condition may be indicated by an incandescent lamp 43 in series with the winding 14 or by a discharge lamp 44 in series with a resistance 45. A low resistance 46 may be connected across the circuit on the operation of a press-button switch 47 to cause the opening of the circuit-breaker. The circuitbreaker 15 may be closed by depressing a pushbutton 17 or by suitable electromagnetic means. In a modification, Fig. 4, the apparatus 3 may be housed within the container 18 of a motor starting liquid rheostat 19 which has a movable rotor 20 with interconnected electrode sectors 25, enclosed in a fixed casing which has electrode sectors 27. In this modified arrangement the apparatus 3 not only causes the opening of the circuit-breaker under overload conditions as described above, but also in the event of the liquid in the container 18 reaching too low a level or too high a temperature. In a polyphase arrangement, Fig. 7 (not shown), two (or more) superposed chambers 7 may be provided in a common vessel and have Intercommunicating passages so that any vapour produced rises to the uppermost chamber. Fig. 9 (not shown) illustrates a two-phase four-wire arrangement. Specification 718,320 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1060453X | 1952-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB730346A true GB730346A (en) | 1955-05-18 |
Family
ID=9599616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12350/53A Expired GB730346A (en) | 1952-05-07 | 1953-05-04 | Improvements in electric circuit-breaker devices |
Country Status (7)
Country | Link |
---|---|
US (1) | US2855545A (en) |
BE (1) | BE519760A (en) |
CH (1) | CH311388A (en) |
DE (1) | DE1060453B (en) |
FR (1) | FR1055545A (en) |
GB (1) | GB730346A (en) |
NL (1) | NL178125C (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3219848A (en) * | 1961-02-07 | 1965-11-23 | Joslyn Mfg & Supply Co | Actuator device |
US3227925A (en) * | 1962-06-27 | 1966-01-04 | S & C Electric Co | Control for switch means |
US3454831A (en) * | 1967-02-20 | 1969-07-08 | Gen Electric | Quick-opening,low cost,current limiting circuit breaker |
US3505565A (en) * | 1967-06-01 | 1970-04-07 | Monitor Mfg Inc | Bin level indicators |
NL7311026A (en) * | 1973-08-09 | 1975-02-11 | Hazemeijer Bv | CURRENT-LIMITING DEVICE. |
FR2334187A1 (en) * | 1975-12-03 | 1977-07-01 | Comp Generale Electricite | ELECTROLYTIC RESISTANCE |
FR2532101B1 (en) * | 1982-08-23 | 1985-03-29 | Bensadoun Michel | |
CN207282240U (en) * | 2016-07-15 | 2018-04-27 | 绵阳市宏扬科技有限公司 | The water resistance that a kind of industrial self-loopa is flowed and cooled down |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1327790A (en) * | 1916-01-05 | 1920-01-13 | Westinghouse Electric & Mfg Co | Ignition system |
US1717260A (en) * | 1921-09-14 | 1929-06-11 | Gen Electric | Circuit interrupter |
US1571304A (en) * | 1923-02-28 | 1926-02-02 | Westinghouse Electric & Mfg Co | Electrical system |
US1694223A (en) * | 1923-06-19 | 1928-12-04 | Balt Mfg Co | Electric switch |
US1764374A (en) * | 1927-08-06 | 1930-06-17 | Westinghouse Electric & Mfg Co | Thermal relay |
DE540153C (en) * | 1930-03-28 | 1931-12-08 | Siemens Ag | Device for interrupting electrical circuits |
CH236475A (en) * | 1937-12-31 | 1945-02-15 | Hermes Patentverwertungs Gmbh | Method and device for regulating and / or interrupting electrical currents. |
US2607831A (en) * | 1950-10-12 | 1952-08-19 | Gen Electric | Overload protective system for dynamoelectric machines |
DE894873C (en) * | 1950-10-18 | 1953-10-29 | Matthias Dipl-Ing Engelsberger | Electric circuit breaker |
FR1088565A (en) * | 1951-08-07 | 1955-03-08 | Liquid resistance electric device |
-
0
- NL NLAANVRAGE7609440,A patent/NL178125C/en active
- BE BE519760D patent/BE519760A/xx unknown
-
1952
- 1952-05-07 FR FR1055545D patent/FR1055545A/en not_active Expired
-
1953
- 1953-05-02 CH CH311388D patent/CH311388A/en unknown
- 1953-05-04 US US352673A patent/US2855545A/en not_active Expired - Lifetime
- 1953-05-04 GB GB12350/53A patent/GB730346A/en not_active Expired
- 1953-05-06 DE DEB25495A patent/DE1060453B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US2855545A (en) | 1958-10-07 |
BE519760A (en) | |
NL178125C (en) | |
DE1060453B (en) | 1959-07-02 |
FR1055545A (en) | 1954-02-19 |
CH311388A (en) | 1955-11-30 |
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