Electrical safety

With the importance and continuous application of power energy, power facilities and equipment have become inseparable from the work and life of modern human beings, and electricity has even become the basic prerequisite for the development of all walks of life in modern times. However, it is undeniable that due to various reasons, while electric energy brings convenience to people's work and life, the problems caused by electrical equipment also bring a lot of troubles and losses to human production and life, and sometimes even manifest as disasters. Therefore, electrical safety has not only become an important work content for electrical operators and maintenance personnel in various countries to eliminate hidden dangers in production safety, prevent casualties, protect the health of employees and successfully complete various tasks, but also the primary issue faced by electrical professionals and strive to solve.

Electrical safety work is a comprehensive work, mainly divided into two aspects: on the one hand, it is to study various electrical accidents, and study the mechanism, causes, composition, characteristics, laws and protective measures of electrical accidents; On the other hand, it is to study the use of electrical methods to solve various safety problems, that is, to study the use of electrical monitoring, electrical inspection and electrical control methods to evaluate the safety of the system or obtain the necessary safety conditions.

The continuous development of modern electronics and electrical engineering has put forward higher requirements for electrical safety work. For example, grounding, insulation, spacing, etc. are traditional safety measures, and these measures are still effective; With the widespread application of automation components and electronic components, the leakage protection device provides a new way to prevent electric shock accidents and other electrical accidents. In recent years, electromagnetic field safety issues and electrostatic safety issues have attracted increasing attention with the widespread application of certain new technologies.

In recent years, thanks to the rapid development and addition of electronics, electromagnetism and control system technology, electrical safety personnel have made breakthroughs in the research of the second aspect. This breakthrough is marked by three categories of electrical safety products emerging on the market:

Category 1: Electrical safety hazard detection and automatic alarm.

Some new electrical safety products can not only detect electrical safety hazards at a very early stage, but also indicate their severity in terms of multi-level alarms, reminding electrical maintenance personnel to troubleshoot problems in time, such as the inhalation type very early smoke detection system represented by Australia's Xtralis ICAM in the fire protection industry.

The second category: intelligent identification and automatic recovery of electrical safety hazards.

Some electrical safety products can automatically switch the load equipment from the disconnected state to the working state after detecting and identifying the short-term recoverable electrical interference, which not only saves the operation time of electrical maintenance personnel for the application of electrical or electronic equipment in an unattended environment, but also improves the application efficiency of the equipment and eliminates the direct and indirect losses caused by equipment shutdown. For example, the automatic reclosing low-voltage switch system of GEWISS in Italy appeared in the electrical industry.

The third category: electrical safety intrusion elimination type.

Some electrical safety products can identify and eliminate external electrical interference. For example, the lightning protection industry has a lightning and surge overvoltage protection system from German OBO company.