GB319749A - Improvements in or relating to electrical circuit interrupters - Google Patents
Improvements in or relating to electrical circuit interruptersInfo
- Publication number
- GB319749A GB319749A GB29371/29A GB2937129A GB319749A GB 319749 A GB319749 A GB 319749A GB 29371/29 A GB29371/29 A GB 29371/29A GB 2937129 A GB2937129 A GB 2937129A GB 319749 A GB319749 A GB 319749A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fuse
- arc
- channel
- voltage
- wire
- 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
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V
Landscapes
- Fuses (AREA)
Abstract
319,749. Associated Electrical Industries, Ltd., (Assignees of Slepian, J., and Mason, R. C.). Sept. 27, 1928, [Convention date]. Fusible cut-outs. - A fuse wire is enclosed in a channel of such dimensions that the voltage of the arc attains a value equal to the voltage of the circuit for a relatively low current value. Certain equations are. given in the Specification correlating the voltage per inch of arc and the current with the crosssection of a channel confining the arc. A fuse is designed from these equations that limits the current to a predetermined value when the fullcircuit voltage is applied to the ends of the arc upon the fuse being ruptured. The fuse wire 5, that may be of tungsten in preference to copper or nickel silver, lies in a channel 11 of spiral or zig-zag form cut in a block of soapstone 8. It is surrounded by a casing 2 of soapstone and connects with conducting plates 12, 13 and end caps 3, 4 having contacts 6, 7. The block 8 may be divided into two or three sections, the channel 11 being formed between them. A sudden fusion of the wire may be prevented by making a short piece of the fuse of high resistance wire and the remainder of low resistance wire.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US308713A US1927905A (en) | 1928-09-27 | 1928-09-27 | Potential transformer fuse |
Publications (1)
Publication Number | Publication Date |
---|---|
GB319749A true GB319749A (en) | 1930-12-29 |
Family
ID=23195090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29371/29A Expired GB319749A (en) | 1928-09-27 | 1929-09-27 | Improvements in or relating to electrical circuit interrupters |
Country Status (2)
Country | Link |
---|---|
US (1) | US1927905A (en) |
GB (1) | GB319749A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2877320A (en) * | 1954-08-18 | 1959-03-10 | Hill George Leslie | Fuse cutout |
US2917605A (en) * | 1956-04-26 | 1959-12-15 | Westinghouse Electric Corp | Fusible devices |
US3251968A (en) * | 1963-10-10 | 1966-05-17 | Westinghouse Electric Corp | Fuse structures formed of concentric fuse tubes to provide a maximum heat radiating surface and a novel venting means |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2483577A (en) * | 1943-11-24 | 1949-10-04 | Westinghouse Electric Corp | Circuit interrupter |
US2502992A (en) * | 1943-12-16 | 1950-04-04 | Westinghouse Electric Corp | Circuit interrupter |
US2496704A (en) * | 1945-03-15 | 1950-02-07 | Westinghouse Electric Corp | Circuit interrupter |
US2523139A (en) * | 1946-09-28 | 1950-09-19 | Westinghouse Electric Corp | Fuse |
US2773960A (en) * | 1954-04-28 | 1956-12-11 | Sundt Engineering Company | Time delay fuse |
US2830156A (en) * | 1956-12-21 | 1958-04-08 | Jr Arthur A Burgess | Shock and vibration resistant fuse |
ES352151A1 (en) * | 1967-03-30 | 1969-06-16 | English Electric Co Ltd | Fuse links |
US3959875A (en) * | 1975-05-05 | 1976-06-01 | The Chase-Shawmut Company | Method and fixture for manufacturing fuses having helically wound fusible elements |
DE19738575A1 (en) * | 1997-09-04 | 1999-06-10 | Wickmann Werke Gmbh | Electrical fuse element |
US6507265B1 (en) * | 1999-04-29 | 2003-01-14 | Cooper Technologies Company | Fuse with fuse link coating |
PL360332A1 (en) * | 2003-05-26 | 2004-11-29 | Abb Sp.Z O.O. | High voltage high breaking capacity thin-layer fusible cut-out |
US20060119465A1 (en) * | 2004-12-03 | 2006-06-08 | Dietsch G T | Fuse with expanding solder |
US8525633B2 (en) * | 2008-04-21 | 2013-09-03 | Littelfuse, Inc. | Fusible substrate |
US9117615B2 (en) * | 2010-05-17 | 2015-08-25 | Littlefuse, Inc. | Double wound fusible element and associated fuse |
US8629750B2 (en) * | 2010-09-20 | 2014-01-14 | Cooper Technologies Company | Fractional amp fuse and bridge element assembly therefor |
US11393651B2 (en) * | 2018-05-23 | 2022-07-19 | Eaton Intelligent Power Limited | Fuse with stone sand matrix reinforcement |
-
1928
- 1928-09-27 US US308713A patent/US1927905A/en not_active Expired - Lifetime
-
1929
- 1929-09-27 GB GB29371/29A patent/GB319749A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2877320A (en) * | 1954-08-18 | 1959-03-10 | Hill George Leslie | Fuse cutout |
US2917605A (en) * | 1956-04-26 | 1959-12-15 | Westinghouse Electric Corp | Fusible devices |
US3251968A (en) * | 1963-10-10 | 1966-05-17 | Westinghouse Electric Corp | Fuse structures formed of concentric fuse tubes to provide a maximum heat radiating surface and a novel venting means |
Also Published As
Publication number | Publication date |
---|---|
US1927905A (en) | 1933-09-26 |
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