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How do working conditions and the condition of the insulation switch cabinet power test stand, directly affect the safe and reliable operation of the power system, according to high-voltage cable construction, installation and maintenance of a number of on-site recognition problems cables personnel need to be resolved, the reference to foreign advanced technology, theory of the electromagnetic field Under the guidance of modern electronic technology and tooling technology developed. Switchgear power-on test bench is mainly used for accurate identification of multiple cables at the site to overcome the frequent blackouts or personal safety accidents caused by wrong trials or wrong sawing cables that often occur at the construction site, which greatly improves construction and maintenance efficiency. Ordinary cable identification instrument upgrade product.
Switchgear power test bench by the 220VAC power electronics conversion input power grid is required to identify specific signal, this signal is applied through a dedicated transmit clamp to be recognized that the charging cable, according to the principle of electromagnetic induction, bound along the cable Sensing signals in accordance with the laws of induction and emission signals. Switchgear power-on test bench uses highly sensitive handheld receivers to test all the cables in the test site at the test site. According to the instructions of the handheld receiver, the signals can be accurately found. Switchgear power-on test bench In view of the fact that the high-voltage transmission and transformation facilities only produce extremely low power frequency electric fields and power frequency magnetic fields, the impact on the environment and the human body is completely negligible.
Electromagnetic radiation refers to the phenomenon that energy is transmitted through the space in the form of electromagnetic waves. The applicable limit range of protection limits is 100 kHz to 300 kHz. The electromagnetic radiation managed by the environmental protection and health departments refers specifically to electromagnetic waves with high band frequencies and wavelengths of 3,000 to 1 millimeter, which are harmful to human health. International authoritative organizations and experts believe that the wavelength of transmission from the high-voltage transmission and transformation facilities of the switchgear power-on test bench is 6,000 kilometers, which is 2000 times the longest wavelength of electromagnetic radiation. Taking the 500 kV EHV line with the highest voltage level as an example, the radiation function per unit area is only about one thousandth of a radio broadcast within a distance of forty to fifty meters.
Switchgear power-on test stand has significant unique use
The switchgear power-on test bench is the most important control and protection device for the power system. There are a large variety of high-voltage switch circuit breakers, which are used in large numbers. In normal operation, they are used to connect high-voltage circuits and disconnect the load. In the event of an accident, they are used to cut off the fault current and reclose if necessary.