着火条件下电缆的试验 电路完整性 第21部分:程序和要求 额定电压0.6/1.0kV及以下的电缆

[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，包括推荐的火焰施加时间，对于额定电压高达（含）0.6/1.0 kV 的电缆，在规定的条件下着火时需要保持电路完整性。状况。它描述了样品制备的方法、连续性检查安排、电气测试程序、燃烧电缆的方法，并给出了评估测试结果的要求。它适用于低压电力电缆和额定电压的控制电缆。 [外文原描述]： IEC 60331-21:1999 Specifies the test procedure and gives the performance requirement, including a recommended flame application time, for cables of rated voltages up to and including 0,6/1,0 kV required to maintain circuit integrity when subjected to fire under specified conditions. Describes the means of sample preparation, continuity checking arrangements, electrical testing procedure, method of burning cables and gives requirements for evaluating test results. It is intended to cover low voltage power cables and gives requirements for evaluating test results.