IEC 60331-4:2024 电缆在火灾条件下的试验 电路完整性 第4部分:额定电压高于1千伏至30千伏（含30千伏）的电缆在至少830℃温度下冲击火灾的试验方法

标准编号：IEC 60331-4:2024

中文名称：电缆在火灾条件下的试验 电路完整性 第4部分:额定电压高于1千伏至30千伏（含30千伏）的电缆在至少830℃温度下冲击火灾的试验方法

英文名称：Tests for electric cables under fire conditions – Circuit integrity – Part 4: Test method for fire with shock at a temperature of at least 830 °C for cables of rated voltage higher than 1 kV up to and including 30 kV

发布日期：2024-12-09

标准范围

IEC 60331-4:20 24规定了测试设备和程序，并给出了额定电压高于0.6/1.0 kV至18/30 kV（含18/30 kV）的电力电缆的性能要求，包括推荐的火焰施加时间和火焰温度，以在规定条件下遭受火灾和机械冲击时保持电路完整性。本文件中的测试方法仅限于导线尺寸不超过120 mm2（含120 mm2）。120 mm2尺寸导体结构的测试结果证明了相同电缆结构的较大横截面。在预组装的三芯电缆的情况下，当电缆的完整单芯已经被测试时，完整的电缆被认为已经被测试。本文件包括与额定电压高于0,6/1,0 kV至18/30 kV（含18/30 kV）的电力电缆相关的具体故障点、连续性检查安排、测试样品、测试程序和测试报告的详细信息。附录A提供了用于试验的燃烧器和控制系统的验证方法。附录B提供了推荐测试仪器的选择。作为一种选择，附录C提供了使用喷水或喷水协议的指南。附录D提供了1 000°C的火焰温度作为选项，适用于特殊应用。规定了标识的要求，该标识可选地标记在电缆上，以表示符合本文件。本团体安全出版物侧重于额定电压高于1 kV至30 kV（含30 kV）的电力电缆在火灾条件下的电路完整性安全测试方法，主要用作范围中提及的产品的产品安全标准，但也打算由TCs根据IEC G中规定的原则，在编写与本团体安全出版物范围中提及的产品类似的产品的出版物时使用uide 104和lSO/lEC指南51。技术合作委员会的职责之一是在适用的情况下，在编写其出版物时使用BSP或GSP或两者。警告-本文件中给出的测试可能涉及使用危险的电压和温度。应采取适当的预防措施，防止可能出现的电击、燃烧、火灾和爆炸的风险，以及可能产生的任何有毒烟雾。

IEC 60331-4:2024 specifies the test apparatus and procedure, and gives the performance requirements, including recommended flame application times and flame temperatures, for power cables of rated voltage higher than 0,6/1,0 kV up to and including 18/30 kV for maintaining circuit integrity when subject to fire and mechanical shock under specified conditions.
The test method in this document is restricted to conductor sizes up to and including 120 mm2. The test results for 120 mm2 size conductors constructions qualify larger cross-sections of the same cable construction.
In the case of preassembled three-core cables, then the complete cable is considered as tested when a complete single-core of the cable has been tested.
This document includes details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to electric power cables with a rated voltage higher than 0,6/1,0 kV up to and including 18/30 kV.
Annex A provides the method of verification of the burner and control system used for the test.
Annex B provides a choice of the recommended test apparatus.
Annex C provides, as an option, guidance for using either water spray or water jet protocols.
Annex D provides, as an option, the flame temperature of 1 000 °C, which is applicable for special applications.
Requirements are stated for an identification that can optionally be marked on the cable to signify compliance with this document.
This group safety publication focusing on the test method for circuit integrity safety for power cables of rated voltage higher than 1 kV up to and including 30 kV under fire conditions, is primarily intended to be used as a product safety standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products similar to those mentioned in the scope of this group safety publication, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
One of the responsibilities of a TC is, wherever applicable, to make use of either BSPs or GSPs, or both, in the preparation of its publications.
WARNING – The test given in this document can involve the use of dangerous voltages and temperatures. Suitable precautions should be taken against the risk of shock, burning, fire and explosion that can arise, and against any noxious fumes that can be produced.

标准预览图