Insulating protective equipment knowledge

1, insulated boots, heel ordinary boots, shoes, what is the difference?

Insulated boots, heel ordinary boots, shoes, different in design, insulated boots, shoes in the structural design of insulating materials made of rubber strip around the insulating layer to form a sealed insulation system to protect the feet. Ordinary boots, shoes is different, Common boots, shoe outsole with an insulating foam material is not used, a low insulation prone to leaking. Some leakage currents up to 30mA current far beyond security, only electrically insulated footwear by performance testing, after passing the factory. This requirement is not ordinary footwear.

2, the insulating protective suits Why should remain dry state wear?

Insulating protective equipment worn in a dry state, the user must pay attention to a big problem, because the insulating protective equipment if they contain a certain amount of water, so that the insulation resistance value of the volume resistivity and the surface is greatly reduced. Water is a conductor, the presence of the water, the insulation performance of the insulator greatly reduced or even destruction. Because the water of atoms angle ∠ HOH = 105 ° generating performance has a strong ion-conductive electrode, and then a lot of impurities in the water with heat, light, electrical, chemical changes under the action of generated energy conductor, and damage the insulation performance, so insulating protective equipment to keep dry, can greatly improve the safety performance.

3, the insulation performance of insulating protective equipment most important indicators of what is good or bad?

Insulating protective equipment (insulated boots, shoes, gloves, etc.) worn primarily intended to prevent an electrical shock is caused by the human body through the current, so the protective properties of the insulator mainly depends on the quality of a certain voltage leakage current through which the size, if Leakage current is within the safe range of current values ​​is safe or unsafe. If a certain voltage is applied, although no cause breakdown, leakage current is too large, but also personal injury.

4, the insulating protective equipment Why should carry out preventive tests?

Preventive test, the power industry the strict rules to ensure personal safety foolproof. Some of the insulating protective equipment warranty period is relatively long, in such a long time, due to the aging effect caused by other conditions or storage change from the perspective of the user safety first before use preventive testing is a must. If you exceed three packs are insulated footwear can also be preventive test, after passing before use.

5, the test voltage with maximum use of what relationship?

Insulating protective equipment in the factory, by only a certain frequency AC voltage test, for example, used the occasion 5KV line voltage is 380V. The test voltage is to use a voltage 13.2-fold safety factor, but using different conditions and environment, countries are not the same. Reference to the United States empirical formula to determine the test voltage and the maximum use of relationships. According to the U.S. ASDTMD120-79 Recommended empirical formula: Maximum voltage = test voltage × 0.95-2000V

6, required to wear anti-static protective equipment environment, wearing anti-static protective equipment should also pay attention to what the future?

To anti-static environment is to prevent the flow of charge due to friction caused by the formation of the charge caused by electrostatic induction focused, high-voltage electrostatic discharge or cause harm. Wear anti-static protection products, can charge through timely manner to gather grounded anti-static products, but can not wear fur and other raw materials for underwear and socks, because they are insulated to prevent the body's electrostatic conductive ground. (Conductive shoes resistance value is not greater than 100KΩ-1000KΩ).