How dangerous it is for electricians to work at heights, and how important the speed differential anti fall device is

Before the use of speed differential anti fall devices, power workers could only rely on seat belts and safety ropes as safety protection equipment. Although they could have a certain anti fall effect, the service life of seat belts and safety ropes was short, and they were easily damaged by sharp objects, resulting in a low safety factor.

Working at heights is already a high-risk industry, and power grid workers have to work for up to 8-9 hours in the air at a height of 100 meters, often busy from dawn to dusk. Most power workers sunbathe in summer and experience northwest winds in winter, soaking outside for over 300 days a year. Their work sites are sometimes plains or valleys, with high sunshine outside the mountains. However, the mountains are covered in continuous rain and snow, which can easily discharge high-voltage power lines and make the cables and wires under the feet of power workers smoother. If they step down, it will be either gravel or thorns, and life and death are often in an instant.

When working at heights, it's not just about standing at high altitude. Sometimes, you also need to carry electrical tools and equipment. For example, spacers are metal fittings that improve the wind resistance of wires. Almost a hundred spacers need to be installed on a single line, and each spacer weighs more than 40 pounds. When working, it relies entirely on the strength of the human arm to slide back and forth. When going down the iron tower, one is often exhausted and has no strength at all.

Once accidentally stepped on, the differential anti fall device can promptly lock the ratchet and pawl, preventing the steel wire rope from continuously slipping and protecting the lives of many electricians.