GB479211A - Improvements in and relating to high tension cartridge and like fuses - Google Patents
Improvements in and relating to high tension cartridge and like fusesInfo
- Publication number
- GB479211A GB479211A GB2644636A GB2644636A GB479211A GB 479211 A GB479211 A GB 479211A GB 2644636 A GB2644636 A GB 2644636A GB 2644636 A GB2644636 A GB 2644636A GB 479211 A GB479211 A GB 479211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- powder
- arc
- fuse
- grains
- packed
- 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
- H01H85/05—Component parts thereof
- H01H85/18—Casing fillings, e.g. powder
-
- 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
- H01H85/36—Means for applying mechanical tension to fusible member
Landscapes
- Fuses (AREA)
Abstract
479,211. Fusible cut-outs. ELECTRIC TRANSMISSION, Ltd., and DANNENBERG, K. Sept. 29, 1936, Nos. 26446/36 and 12770/37. [Class 38 (i)] In a high tension fuse, the deterioration of the element due to corona discharge is prevented by arranging that the grains of the arc-quenching powder are of such a size and are packed sufficiently closely that ions discharged from the element cancel the field between the element and the grains without impairing the arc-quenching properties of the powder. A hollow refractory sheath 3, provided with ribs 6 to support subsidiary fuse wires 7, preferably of some non-oxidizable material such as tungsten, contains a main fuse wire 1 of silver, embedded in arc-quenching powder such as marble dust, and connected to end caps .4 engaging spring contacts 10 on the end caps 9 cemented with litharge, plaster of Paris, &c., to the outer refractory sheath 8. The marble dust grains may have a maximum diameter of 0À1 mm., the sheaths being packed by shaking in a jig vibrating at least 150 times per minute, the space 13 being filled with powder and closed by end plates 12. In a modification, the wire 1 is passed up and down the inner wall of the sheath 3 over longitudinal ridges having notches at the ends. A single wire cartridge fuse is also described packed with powder and hermetically sealed.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL60864D NL60864C (en) | 1936-09-29 | ||
GB2644636A GB479211A (en) | 1936-09-29 | 1936-09-29 | Improvements in and relating to high tension cartridge and like fuses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2644636A GB479211A (en) | 1936-09-29 | 1936-09-29 | Improvements in and relating to high tension cartridge and like fuses |
Publications (1)
Publication Number | Publication Date |
---|---|
GB479211A true GB479211A (en) | 1938-02-02 |
Family
ID=10243735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2644636A Expired GB479211A (en) | 1936-09-29 | 1936-09-29 | Improvements in and relating to high tension cartridge and like fuses |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB479211A (en) |
NL (1) | NL60864C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3333336A (en) * | 1965-10-13 | 1967-08-01 | Westinghouse Electric Corp | Method of making a fuse by securing the terminals by magnetic forming |
US3781745A (en) * | 1969-09-10 | 1973-12-25 | Joslyn Mfg & Supply Co | Fused coupler assembly |
-
0
- NL NL60864D patent/NL60864C/xx active
-
1936
- 1936-09-29 GB GB2644636A patent/GB479211A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3333336A (en) * | 1965-10-13 | 1967-08-01 | Westinghouse Electric Corp | Method of making a fuse by securing the terminals by magnetic forming |
US3781745A (en) * | 1969-09-10 | 1973-12-25 | Joslyn Mfg & Supply Co | Fused coupler assembly |
Also Published As
Publication number | Publication date |
---|---|
NL60864C (en) |
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