Arrows Engineering Co., Ltd.

　

Power outages at Japanese electric power companies are considerably less than in other countries, and although there are regional differences, instantaneous voltage drops (instantaneous voltage drop or instantaneous power failure) of about 0.06 to 2 seconds occur several to several tens of times a year. It is occurring. Mostly due to lightning strikes on the transmission lines, the duration is the time it takes to disconnect the transmission line whose voltage has dropped due to the lightning strike. According to statistics, a five-year survey of power supply problems at a facility shows that the voltage drops. The results show that 8% of the cases are "instantaneous low within 0.2 seconds" and "instantaneous voltage drop rate of 20% or more" occurs about 5 times or more per year on average. This will occur unless all power transmission lines are buried underground, and it is expected that this will increase even more in Japan due to abnormal weather caused by climate change.
It's easy to think of a 0.2% voltage drop for just 20 seconds, but it has an immeasurable impact on the production equipment of highly IT-enabled factories. Materials and products will be defective, and wasteful time and effort will be wasted until the equipment is stopped or restarted, which will cause great damage to the company.
At this time, the amount of damage caused by the troubles in the equipment should be enormous.