In the power system for power generation and supply, historical, traditional and customary beliefs: oxidation and corrosion (chemical, electrical corrosion) cause overheating of electrical contacts; the contact part is a weak link in the circuit and an important part of overheating; electrical contacts The contact resistance of (busbar connector) is generally specified to be no more than 20% of the resistance value of the busbar with the same length, etc. It is precisely because of these wrong theories and concepts that "constantly" repeating past mistakes in solving and eliminating electrical contact overheating technology, methods, and processes has made electrical contact overheating almost an incurable cancer at home and abroad. In retrospect, the theory and concept of overheating of electrical contacts seemed reasonable. Therefore, when analyzing and dealing with such accidents, the reasons and main contradictions of the overheating of the electrical contacts are not analyzed and searched for, and they are ultimately summarized as "equipment accidents."

The electrical contact (joint) temperature (especially if the energization time is long) is higher than the temperature of its conductor (line). The electrical contact is overheated. At this time, the electrical energy is converted into heat at the electrical contact, which is equal to the electrical contact temperature. The "line loss" at the temperature of the conductor has increased, because so many electrical contacts cannot be avoided in the power system. This kind of neglected (because theoretically and conceptually believe that electrical contacts are "required" and "should" overheating) "line loss" is in the millions each year in the country. If the electrical contacts are not overheated, energy saving and consumption reduction can only be achieved. Lost the watermelon, picked up the sesame.

Since the prevention of electrical contact (joint) overheating failure is the mainstay, infrared temperature measurement and other palliative measures but not the root cause, if not detected as early as possible, it has further developed into overheating accidents that have repeatedly caused various (a) power systems: Electrical equipment burned out, short-circuited, and power supply was interrupted. In addition, due to ineffective protection, an electrical contact overheating accident expanded, causing partial collapse of the power grid and large-scale power outages. The power system connects various fields, industries, and every citizen who uses electricity. The safety, economic, and social benefits of an electrical contact overheating accident cannot be estimated.

In addition, any electrical contact (connector) in the power system used by aircraft, spacecraft, space stations and other equipment, even if any electrical contact in the control circuit fails or accidents, will "remedy the loss". There is no remedy, that is, the overheating of the electrical contacts of vehicles such as trains, ships, and automobiles does not only cause the loss of such vehicles. Anyone may face these disasters, such as "equipment accidents" and "car spontaneous combustion". We must not deceive ourselves!

I have to talk about electrical fires. It is reported that the overheating of electrical contacts in fires has become the first cause. Electrical fires have accounted for 20-30% of fires, and their losses are even greater. At present, we still adopt fire drills and prevention in all aspects. Non-professional news reports such as "insulation aging, overload, short circuit" and so on are all based on the logic that electrical fires occur when electricity is used. Building fire protection regulations. Today, we have been able to make the temperature of electrical contacts lower than the temperature of its conductors to eliminate electrical fires. On the contrary, many departments, especially those selling fire-fighting equipment, are not suitable. You know, electrical fires will also patronize these departments. In fact, it is just a piece of cake to completely eliminate all the above-mentioned overheating accidents of electrical contacts with the theory and technology of thermal electrical contacts. How to promote scientific and technological achievements here, whether to eliminate the hazards of electrical contacts, and how to ensure that all electricity is used The safety of citizens' lives and property (government officials and civil servants in relevant departments) depends on the attitudes of the government and relevant departments. This does involve many ministries and commissions in the country. Who will "raise the flag and catch the outline" in this revolution?