发明名称 |
TELECOMMUNICATIONS GAS TUBE APPARATUS AND COMPOSITION FOR USE THEREWITH |
摘要 |
A telecommunications gas tube apparatus (40) which is suitable for connection to a gas discharge tube (12) and which comprises an electrically non-linear resistive element (45) prepared from an electrically non-linear composition which comprises a polymeric component and a particulate filler. The composition has an initial resistivity i at 25 ~C of at least 109 ohm-cm, and is such that a standard device containing the composition has an initial breakdown voltage VSi, and after the standard device has been exposed to a standard impulse breakdown test, the device has a final breakdown voltage VSf which is from 0.7VSi to 1.3VSi. In addition, the composition in the device has a final resistivity f at 25 ~C of at least 109 ohm-cm. Such compositions are useful in providing both vent-safe and fail-safe protection to a gas discharge tube (12).
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申请公布号 |
CA2191740(A1) |
申请公布日期 |
1995.12.07 |
申请号 |
CA19952191740 |
申请日期 |
1995.05.30 |
申请人 |
RAYCHEM CORPORATION |
发明人 |
SIMENDINGER, WILLIAM H., III.;MORTON, RODNEY E. |
分类号 |
H01C7/10;H01B1/22;H01C7/12;H01C7/13;H01J17/40;H01T1/14;H01T1/16;H01T4/12;(IPC1-7):H01C7/10 |
主分类号 |
H01C7/10 |
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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