着火条件下电缆的试验.电路完整性.第3部分:额定电压高达(和包括)0.6/1.0 KV的电缆在金属外壳内、温度不低于830°C的冲击火焰下的试验方法

[中文适用范围]： IEC 60331 的这一部分规定了测试程序并给出了性能要求@，包括额定电压高达（含）0@6/1@0 kV 的电缆的推荐火焰施加时间@，以在受到火灾和机械影响时保持电路完整性。规定条件下的冲击。它适用于测试总直径大于 20 毫米的电缆。它描述了样品制备方法@连续性检查安排@电气测试程序@燃烧电缆的方法和冲击产生的方法@并给出了评估测试结果的要求。 IEC 60331的本部分适用于额定电压的低压电力电缆和控制电缆。注：虽然范围仅限于额定电压不超过 0@6/1@0 kV@ 的电缆，但经制造商和买方同意，该程序可用于额定电压不超过 3 kV 的电缆。 @3 kV@ 前提是使用合适的保险丝。 [外文原描述]： IEC 60331-3:2009 specifies the test apparatus and procedure and gives the performance requirements, including recommended flame application times, for low-voltage power cables of rated voltage up to and including 0,6/1,0 kV, and control cables with a rated voltage which are required to maintain circuit integrity when tested in a metal enclosure and when subject to fire and mechanical shock under specified conditions. This standard describes the means of sample preparation, the continuity checking arrangements, the electrical testing procedure, the method of burning the cables and the method of shock production and gives requirements for evaluating test results. NOTE All cables assessed by this method should first have been assessed against the test of IEC 60331-1 or IEC 60331-2. Such performance may be recognized by the marking according to Clause 11 of IEC 60331-1 or Clause 11 of IEC 60331-2. Annex A provides the method of verification of the burner and control system used for the test. It has the status of a horizontal standard in accordance with href="https://webstore.iec.ch/publication/7516">IEC Guide 104 .