Electrical safety appliances can be roughly divided into two categories, namely, basic safety appliances and auxiliary safety appliances.
Safety appliances are special tools to prevent accidents such as electric shock, falling, burns and gas poisoning, and to ensure the safety of workers. They have high insulation strength, can withstand the working voltage of electrical equipment for a long time, and can be directly used to operate live equipment, such as insulating rods and insulating pliers.
Auxiliary safety appliances, whose insulation strength is not strong enough to withstand the working voltage of electrical equipment, are only used to strengthen the safety function of basic safety appliances, such as insulating tables, insulating pads, insulating gloves, insulating boots (shoes) and so on.
Matters needing attention in the use and storage of insulating gloves
1. Insulating gloves can insulate people's hands from charged bodies. They are made of special rubber (or latex) and are divided into 12kV (test voltage) and 5kV.
2. Insulating gloves cannot be replaced by medical gloves or chemical gloves.
3. Insulating gloves are generally used as auxiliary safety appliances and can be regarded as basic safety appliances when used on electrical equipment below 1kV.
4. Before use, it must be inflated. If any damage is found, it cannot be used.
1, insulation classification:
Insulation can usually be divided into three categories: gas insulation, liquid insulation and solid insulation. In practical application, solid insulation is still widely used and is a reliable insulating substance.
2, the nature of insulation breakdown:
Once the external factors (strong electric field) are removed, gas insulating materials and liquid insulating materials can recover their inherent electrical insulating properties after being decomposed. However, after the solid insulating material is decomposed, it irreversibly loses its electrical insulation performance-it cannot be insulated and broken down.
3, the main reason for the formation of insulation breakdown:
(1) Due to corrosive gas, steam, moisture, conductive dust and mechanical damage, the insulation performance of insulating materials may be reduced or even destroyed.
(2) The long-term effects of environmental factors such as sunshine, wind and rain will also make the thermal insulation materials age and gradually lose their thermal insulation performance.