发明名称 |
Fuse |
摘要 |
An elongated substrate made of an electric insulating material carries an elongated conductive track made of aluminium which has a constriction in its centre part in order to increase the heating of the said centre part with a view to reducing as much as possible the volume of material to melt. The ends of the track each comprise an annular part which partially covers a nickel or aluminium pad. The connection and cooling of the ends is carried out by connection brackets. This fuse is calculated in such a way that for a rated current IN, a maximum temperature variation DELTA T and a length of the electric conductor designated 2b, thermal equilibrium is obtained when the relationship between the cross section S of the said conductor and that S' of the base material corresponds approximately to: S= rho 'th. rho e.b2.IN2/2S'. DELTA Tmax where rho 'th is the thermal resistivity of the substrate and rho e the electrical resistivity of the conductive track. |
申请公布号 |
GB2246485(B) |
申请公布日期 |
1994.11.23 |
申请号 |
GB19910009523 |
申请日期 |
1991.05.02 |
申请人 |
* BATTELLE MEMORIAL INSTITUTE |
发明人 |
JACQUES * VERMOT-GAUD;GEORGES * MELET;BODGAN * ZEGA |
分类号 |
H01H85/04;H01H85/046;H01H85/06;H01H85/08;H01H85/10;H01H85/143;H01H85/20;H01H85/22;(IPC1-7):H01H85/046 |
主分类号 |
H01H85/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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