Working environment requirements and precautions of electric heating tube

Electric heating tube is an electrified heating equipment, so safety should be emphasized when using it. After all, accidents caused by electricity are very serious. So today, electric heating tube manufacturers will talk about the working environment requirements and precautions of electric heating tube.

1. The components are allowed to work under the following conditions.

A. The relative humidity of the air is not more than 95%, and there is no explosive and corrosive gas.

B. The working voltage shall not be greater than 1.1 times of the rated value, and the enclosure shall be effectively grounded.

C. Insulation resistance ≥ 1m Ω Dielectric strength: 2KV / 1min.

2. The electric heating pipe shall be positioned and fixed. The effective heating area must be immersed in liquid or metal solid. No empty burning is allowed. If any scale or carbon deposit is found on the surface of the pipe body, it should be removed and reused in time to avoid affecting the heat dissipation and shortening the service life.

3. When heating fusible metal or solid nitrate, alkali, leach, stone wax, etc., the service voltage should be reduced first, and the rated voltage can only be increased after the medium is melted.

4. When heating the air, the elements should be evenly arranged, so that the elements have good heat dissipation conditions, so that the flowing air can be fully heated.

5. Safety measures should be considered when heating nitrate to prevent explosion accident.

6. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media and water; The lead wire shall be able to bear the temperature and heating load of the wiring part for a long time, and excessive force shall be avoided when fastening the wiring screw.

7. Components should be stored in a dry place, if the insulation resistance is less than 1m due to long-term storage Ω It can be dried in the oven at about 200 ℃ or heated by reducing the voltage until the insulation resistance is restored.

8. The magnesia powder at the outlet end of the electric heating tube can avoid the penetration of pollutants and water in the place of use, so as to prevent the occurrence of electric leakage accidents.