What should be paid attention to in the flow beam mode in the electric heater pipeline
Posted by Admin | 23 May
Abstract: The insulation between the dielectric strength terminal and the ground terminal and between the two adjacent terminals should be able to withstand AC 50Hz. The sealing ring of the cable entry device requires that the sealing ring of the entry device should meet the test requirements of the power frequency test voltage
The electric heater door opening and closing part controls the flow of the medium in the pipeline. The shape of the electric heater door flow channel makes the electric heater door have certain flow characteristics. When choosing the electric heater door that is most suitable for installation in the pipeline system This must be taken into account.
The electric heater shall be equipped with a leakage protection device, and the shell pressure resistance and internal ignition non-transmission requirements shall pass the shell pressure test in Article 15.1 of GB3836.2-2010 and the non-transmission test for internal ignition in 15.2. Damp heat test The electric heater is subjected to a damp heat test, the severity level is +40°C, 12d, and the test shall meet the requirements.
The electric ball valve leakage protection device is located in the control box. After the electric heater and the control box are used together, the leakage protection function is realized. The main performance is the insulation resistance. The insulation resistance between the terminal and the ground terminal at room temperature should not be less than lOMΩ. The wet insulation resistance is not less than 2MΩ.
The insulation between the dielectric strength terminal and the ground terminal, and between the two adjacent terminals should be able to withstand AC 50Hz. The sealing ring of the cable entry device should meet the test requirements of the article. The power frequency test voltage is 4200V, which lasted for l minute without breakdown and flashover. The water pressure requires that the enclosure should pass through without permanent deformation or damage affecting the flameproof performance.