The fire resistance of Fire-Resistant Bus Duct may decline during long-term use, which depends on many factors.
First, material aging is an important factor. The shell and insulation materials of Fire-Resistant Bus Duct will gradually age over time. Long-term exposure to temperature changes, humidity and chemicals in the environment may cause changes in the physical and chemical properties of the materials. For example, the insulation material may become brittle and lose elasticity, thereby reducing its insulation and fire resistance.
The use environment will also affect the fire resistance. If it is in a harsh environment for a long time, such as high temperature, high humidity, dust or corrosive gas, it will accelerate the aging and damage of the bus duct. Dust and corrosive substances may invade the interior of the bus duct and affect its structure and performance.
Daily operating conditions should not be ignored. Frequent overload operation, overvoltage or current shock will damage the internal structure and materials of the bus duct, thereby affecting the fire resistance. Long-term high-load operation may cause excessive heating of the conductor, affecting the performance of insulation and fire resistant materials.
Maintenance and care are also key. If there is a lack of regular inspection, cleaning and maintenance during long-term use, some potential problems may not be discovered and solved in time. For example, looseness and corrosion of the connection parts, or the accumulation of dirt and debris inside, may gradually weaken the overall performance of the Fire-Resistant Bus Duct.
In addition, the manufacturing quality and the rationality of the initial design will also affect its long-term fire resistance. If there are material defects, poor workmanship or unreasonable design during the production process, such as an incomplete fireproof structure, it is more likely to have a problem of reduced fire resistance during long-term use.
In order to evaluate whether the fire resistance of the Fire-Resistant Bus Duct has decreased after long-term use, regular inspection and evaluation are required. The performance status can be judged by simulated fire tests, insulation resistance tests, appearance inspections and other methods.
In summary, during the long-term use of the Fire-Resistant Bus Duct, due to the combined effects of multiple factors such as material aging, use environment, operating conditions, maintenance, manufacturing quality and design, its fire resistance is likely to decline. Therefore, in order to ensure that it can play its due fire-resistant role at critical moments and ensure the safety of personnel and equipment, it is necessary to strengthen daily maintenance management and conduct inspections and evaluations according to prescribed cycles.
