火灾工况下耐火电缆的电-热耦合场研究

Research on Current and Temperature Coupling Fields of Fire-Resistant Cable under Fire

耐火电缆在建筑领域越来越受到重视,火灾工况下耐火电缆必须具备绝缘完整性、线路压降不能超过阈值,目前对于耐火电缆在火灾工况下的电压降尚无计算方法。研究了火灾工况下耐火电缆的电-热耦合场,建立了导体温升和电压降的理论模型,可以为耐火电缆设计和消防设计提供参考。

The fire-resistant cables had attracted more and more attention in the field of construction. The fire-resistant cables should not only satisfy the integrity of the insulation, but also the pressure drop deadline. There was no calculation method for the voltage drop of fire-resistant cables under fire conditions now. This paper had researched the current and temperature coupling fields of fire-resistant cables under fire. A theoretical model of conductor temperature rise and voltage drop was established, which could provide reference for fire-resistant cables and fire protection design.