How to choose fire-resistant cable and fire-resistant closed busbar?

In many large buildings or important buildings, in addition to the normal power supply and distribution, but also equipped with diesel generators as emergency power. Once the grid power lines out of the problem or fire inside the building so that the utility power tripped power outage, the need for diesel generator sets to generate power for temporary power supply to ensure that important work does not stop working, or to ensure that the evacuation lighting to indicate the direction of evacuation of personnel. Diesel generators need to be issued by some of the substation's low-voltage distribution cabinet, through the low-voltage distribution cabinet feed to the need for emergency power supply of power equipment up. The diesel generators and the substation's low-voltage distribution cabinets are connected by fire-resistant cables or fire-resistant closed bus into an integrated power supply system. As the fire-resistant cable or fire-resistant closed bus in addition to the grid or line problems as emergency power lines, but also in the event of fire or other disasters as a transmission line. Therefore, fire-resistant cable or fire-resistant closed bus must be able to ensure normal power transmission at high temperatures. When the ambient temperature reaches 700 ℃ or more, can also ensure that the power supply operation in more than 1.5 hours, not due to the rise in ambient temperature caused by the internal insulation is reduced resulting in short-circuit phenomenon between the lines.

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