Yunzhan Technology successfully alerted a campus fire hazard accident, avoiding the occurrence of major disasters and ensuring the orderly operation of the school!
Wuhan First Commercial School is a public full-time national key vocational school and a national demonstration secondary vocational school. In October 2020, the school installed three active environmental safety monitoring and warning devices in its power distribution room for environmental safety monitoring, evaluation, and warning.
On January 27, 2021 at 19:23:02, the equipment detected a warning signal and subsequently sent a warning message to the operation and maintenance personnel. After on-site investigation and reset, the operation and maintenance personnel left.
The next day, our company's technical personnel brought a safety hazard inspection device to the site to investigate the hidden danger points. When the operation and maintenance personnel turned on all loads, the on-site equipment issued a warning signal again. After inspection by the inspection instrument, the concentration of nanoparticles in the No. 2 low-voltage outgoing cabinet continued to rise. After opening the cabinet door, it was found that the 315A circuit breaker tripped. The trend of nanoparticle concentration changes was consistent with last night, thus determining the location of the hidden danger
1月27日
January 28th
Subsequently, our company's technical personnel carried inspection equipment to sequentially inspect the distribution boxes on each floor of the outgoing cabinet. It was found that the insulation rubber at the B-phase connection of the 40A circuit breaker lighting switch on the seventh floor had aged, and the cable was partially grounded and short circuited (the surrounding area had been softened and burnt). As a result, the 315A circuit breaker in the No. 2 low-voltage outgoing cabinet of the distribution room was overloaded, causing flashover and burning of the internal insulation material, which was detected by on-site equipment and issued a warning signal.
After our company's technical personnel reported this hidden danger to the on-site operation and maintenance personnel and school leaders, the operation and maintenance personnel promptly replaced the faulty components and simultaneously investigated the situation of other circuits, avoiding major safety accidents and ensuring the smooth and orderly operation of the school.
Preventing problems before they arise "has been emphasized by General Secretary Xi Jinping at multiple meetings of emergency management departments at all levels. Yunjian Technology takes it as its responsibility to develop fire warning systems and will develop more intelligent warning devices in the future to continuously assist in the safe operation and intelligent management of fire warnings in various industries.
