耐火母线的一些知识点Some knowledge points of fire-resistant busbar

耐火母线厂家认为在许多大型建筑或重要建筑中，除了正常的供配电外，还配备柴油发电机作为应急电源。一旦电网供电线路出现问题或建筑物发生火灾导致市电跳闸断电，需要柴油发电机组发电临时供电，以保证重要工作不会停止，或保证疏散照明指示人员疏散方向。柴油发电机发出的电需要经过变电站内的一些低压配电柜，馈给需要应急电源的用电设备。柴油发电机和变电站低压配电柜需要耐火封闭母线连接成一个综合供电系统。

Fire resistant busbar manufacturers believe that in many large or important buildings, in addition to normal power supply and distribution, diesel generators are also equipped as emergency power sources. Once there is a problem with the power supply lines of the power grid or a fire occurs in a building, causing the mains power to trip and cut off, a diesel generator set is needed to generate temporary power to ensure that important work does not stop or to ensure that evacuation lighting indicates the direction of personnel evacuation. The electricity generated by the diesel generator needs to pass through some low-voltage distribution cabinets in the substation and be fed to electrical equipment that requires emergency power supply. Diesel generators and low-voltage distribution cabinets in substations need to be connected with fire-resistant enclosed busbars to form a comprehensive power supply system.

耐火母线厂家认为因为耐火封闭母线不仅在电网或线路出现问题时作为应急供电线路使用，在发生火灾或其他灾害时也作为输电线路使用。因此，耐火封闭母线必须能够保证高温下的正常传输。当环境温度达到700以上时，电源也能保证运行1.5小时以上，不会因环境温度升高导致内部绝缘下降而出现线间短路的现象。

耐火母线厂家认为封闭母线由载流导体、外壳和绝缘材料组成。母线外壳应采用具有足够机械强度的优质冷轧钢板，防护等级为IP55。载流导体应采用符合GB5585.1-5585.3标准的电气用铜材，导体触头接触面经过特殊处理，使连接部位接触可靠，发热低，使用安全可靠。保温材料应具有良好的绝缘性能、抗老化、低烟等性能指标。

封闭母线分两种。一种封闭母线载流量大，但只能在200下工作，一般安装在输送市电的线路上。这种母线也叫密集封闭母线。另一种封闭式母线可以耐高温。一般能在700 ~ 1000的环境温度下维持输电运行1.5小时，载流量可达5000A，这种封闭母线称为耐火封闭母线。

耐火母线厂家认为耐火封闭母线与密集型封闭母线的区别在于外壳部分。耐火封闭母线的外壳涂有一层防火涂料，而致密封闭母线表面喷塑，平整，防腐层附着力强。因此，消防线路和应急供电线路设计采用母线时，均采用耐火封闭母线。耐火封闭母线安装时需要的空间较大，转弯不方便，但安装时附件较少。同时，耐火封闭母线可以防止小动物的伤害，安装后方便以后的运行维护。

以上就是关于耐火母线的一些知识点，希望大家可以认真学习了解相关知识，选择合适自己需求的产品和设备。

The manufacturer of fire-resistant busbars believes that fire-resistant enclosed busbars are not only used as emergency power supply lines in case of power grid or line problems, but also as transmission lines in case of fires or other disasters. Therefore, fire-resistant enclosed busbars must be able to ensure normal transmission at high temperatures. When the ambient temperature reaches 700 or above, the power supply can also ensure operation for more than 1.5 hours without the phenomenon of line to line short circuit caused by the decrease in internal insulation due to the increase in ambient temperature.
The manufacturer of fire-resistant busbars believes that enclosed busbars are composed of current carrying conductors, shells, and insulation materials. The busbar casing should be made of high-quality cold-rolled steel plates with sufficient mechanical strength and a protection level of IP55. The current carrying conductor should be made of electrical copper material that meets the GB5585.1-5585.3 standard. The contact surface of the conductor contact should be specially treated to ensure reliable contact at the connection point, low heat generation, and safe and reliable use. Thermal insulation materials shall have good insulation performance, anti-aging, low smoke and other performance indicators.
There are two types of enclosed busbars. A type of enclosed busbar with a high current carrying capacity but can only operate at 200 hours, usually installed on the transmission line of mains electricity. This type of busbar is also called a dense enclosed busbar. Another type of enclosed busbar can withstand high temperatures. Generally, it can maintain power transmission operation for 1.5 hours at an ambient temperature of 700~1000, with a current carrying capacity of up to 5000A. This type of enclosed busbar is called a fire-resistant enclosed busbar.
The manufacturer of fire-resistant busbars believes that the difference between fire-resistant enclosed busbars and dense enclosed busbars lies in the shell part. The outer shell of the fire-resistant enclosed busbar is coated with a layer of fire-resistant coating, and the surface of the sealed enclosed busbar is sprayed with plastic, which is smooth and has strong adhesion to the anti-corrosion layer. Therefore, when designing fire protection lines and emergency power supply lines using busbars, fire-resistant enclosed busbars are used. The installation of fire-resistant enclosed busbars requires a large amount of space and is inconvenient for turning, but there are few accessories during installation. Meanwhile, fire-resistant enclosed busbars can prevent harm from small animals and facilitate future operation and maintenance after installation.
The above are some knowledge points about fire-resistant busbars. We hope that everyone can study and understand the relevant knowledge seriously, and choose products and equipment that are suitable for their own needs.