标准摘要
[中文适用范围]： IEC 60331的本部分规定了在规定条件下遭受火灾和机械冲击时保持电路完整性所需的电缆的测试方法。本标准适用于额定电压不超过600V/1000V的电缆，包括额定电压80V以下的电缆、金属数据和电信电缆以及光纤电缆。它适用于测试外径不大于 20 毫米的电缆。较大直径的电缆应使用 IEC 60331-1 的设备、程序和要求进行测试。本文件包括额定电压600V/1000V及以下电力和控制电缆的具体故障点、连续性检查安排、试验样品、试验程序和试验报告的详细信息。 具体故障点的详细信息IEC 60331-2没有给出与金属数据和电信电缆、光纤电缆相关的连续性检查安排、试验样品、试验程序和试验报告。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，该程序也可用于额定电压不超过 1, 8/3 (3,3) kV，前提是使用合适的保险丝。附录 A 提供了用于测试的燃烧器和控制系统的验证方法。规定了可以选择在电缆上标记的标识的要求，以表明符合本标准。注意 - 本标准中给出的测试可能涉及使用危险电压和温度。应采取适当的预防措施，防止可能涉及的冲击、燃烧、火灾和爆炸的风险，以及可能产生的任何有毒烟雾。 [外文原描述]： IEC 60331-2:2018 specifies the test method for cables which are required to maintain circuit integrity when subject to fire and mechanical shock under specified conditions. This document is applicable to cables of rated voltage not exceeding 600 V/1 000 V, including those of rated voltage below 80 V, metallic data and telecom cables and optical fibre cables. It is intended for use when testing cables of not greater than 20 mm overall diameter. Cables of larger diameter are intended to be tested using the apparatus, procedure and requirements of IEC 60331-1. This document includes details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to electric power and control cables with rated voltage up to and including 600 V/1000 V. Details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to metallic data and telecom cables and optical fibre cables are not given by IEC 60331-2. Although the scope is restricted to cables with rated voltage up to and including 0,6/1,0 kV, the procedure can be used, with the agreement of the manufacturer and the purchaser, for cables with rated voltage up to and including 1,8/3 (3,3) kV, provided that suitable fuses are used. Annex A provides the method of verification of the burner and control system used for the test. Requirements are stated for an identification that may optionally be marked on the cable to signify compliance with this standard. This second edition cancels and replaces the first edition published in 2009. It constitutes a technical revision. The significant technical changes with respect to the previous edition are as follows: – extension of the scope with metallic data and telecom cables and optical fibre cables, although details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to metallicdata and telecom cables and optical fibre cables are not given by IEC 60331-2; – improved description of the test environment; – mandatory use of mass flow meters/controllers as the means of controlling accurately the input flow rates of fuel and air to the burner; – improved figure illustrating method of mounting of the sample regarding bending radius; – improved description of the information to be included in the test report.
英文名称Tests for electric cables under fire conditions - Circuit integrity - Part 2: Test method for fire with shock at a temperature of at least 830 °C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter not exceeding 20 mm