09,22,2026 22 views
Customized features of sheathed electric heater manufacturer:
After installing a protective sheath, this electric heater has a large heating area, fast heat transfer, and can effectively prevent carbonization of the heated medium. Due to the flange connection between the electric heater and the box, the heater is isolated from the heating medium, making maintenance more convenient. When repairing, only the heating core needs to be removed and a new heater needs to be replaced.
Main technical parameters:
Rated voltage: single-phase 220V, three-phase 380V
Surface heating power: Type 4, Type 5 ≤ 1.8w/cm2, Type 6, Type 7 ≤ 0.7w/cm2
Heat transfer temperature: ≤ 300 ℃
Working medium: Mineral oil
Work pressure: ≤ 0.8MPa
Heater installation hole: ≥ Ø 114mm
Usage:
1. The sheathed electric heater components supplied by the sheathed electric heater manufacturer are allowed to operate under the following conditions: A. The relative humidity of the air is not greater than 95%, and there are no explosive or corrosive gases. B. The working voltage should not exceed 1.1 times the rated value, and the casing should be effectively grounded. C. Insulation resistance ≥ 1M Ω, dielectric strength: 2KV/1min.
2. Electric heating tubes should be properly positioned and fixed, and the effective heating area must be completely immersed in liquid or metal solids. Empty burning is strictly prohibited. When scale or carbon deposits are found on the surface of the pipe body, they should be removed and reused in a timely manner to avoid affecting heat dissipation and shortening the service life.
3. When heating molten metals or solid nitrate, alkali, asphalt, paraffin, etc., the operating voltage should be reduced first, and only after the medium melts can it be raised to the rated voltage.
4. When heating air, the components should be arranged in a cross and even manner to provide good heat dissipation conditions, so that the air flowing through can be fully heated.
5. When heating nitrate, safety measures should be considered to prevent explosion accidents.
6. The wiring part should be placed outside the insulation layer to avoid contact with corrosive, explosive media, and moisture; The lead wire should be able to withstand the temperature and heating load of the wiring part for a long time, and excessive force should be avoided when tightening the wiring screws.
7. The components should be stored in a dry place. If the insulation resistance is lower than 1M Ω due to long-term storage, they can be dried in an oven at around 200 ℃ or heated with reduced voltage until the insulation resistance is restored.
8. The magnesium oxide powder at the outlet of the electric heating tube of the sheathed electric heater supplied by the sheathed electric heater manufacturer should be protected from pollutants and moisture infiltration in the usage area to prevent leakage accidents.
