电缆在着火条件下的试验.电路完整性.第1部分:额定电压高达(和包括)0.6/1.0 KV，全径大于20 mm的电缆在温度不低于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。它适用于测试总直径大于 20 毫米的电缆。较小直径的电缆应使用 IEC 60331-2 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 60331-1没有给出与金属数据和电信电缆和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。规定了标识的要求，可以选择在电缆上标记标识，以表示符合本文件。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 60331-1:2018 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 greater than 20 mm overall diameter. Cables of smaller diameter are intended to be tested using the apparatus, procedure and requirements of IEC 60331-2. 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/1 000 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 60331-1. 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 document. 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 to include 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 metallic data and telecom cables and optical fibre cables are not given by IEC 60331-1; – improved description of the test environment; – modified steel test ladder with two extra vertical elements to accommodate the modified testing of single core cables without concentric metal layer and the testing of cables with a bending radius in normal use larger than approximately 400 mm; – 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 description of the information to be included in the test report. This document has the status of a group safety publication in accordance with IEC Guide 104.