Sheath type electric heater 380V

1、 Electric heater HRY5 380V 1.2KW introduction:

Small size, high power. The heater mainly uses bundled tubular heating elements inside, with each bundled tubular electric heating element having a maximum power of KW. It has fast thermal response, high temperature control accuracy, and high comprehensive thermal efficiency. Wide application range and strong adaptability. This heater is suitable for explosion-proof or ordinary occasions. Its explosion-proof rating can reach Class B and C for men, and its pressure resistance can reach Mpa. The cylinder can be installed vertically or horizontally according to user needs. The heating temperature is high. The maximum operating temperature of the heater design can reach ℃, which is not achievable with typical heat exchangers. Fully automated control. Through the design of this heater circuit, automatic control of parameters such as outlet temperature, pressure, and flow rate can be easily achieved, and it can be connected to a computer for human-machine dialogue.

2、 Calculation of resistance of shell type single head electric heating tube

Example: 220V 1500W 'electric heating tube

P=1500 watts (power) U=220 volts (voltage) Calculate: I (current)

I=P/U=1500/220≈6.82 安

Ohm's law states: R (resistance)

R=U/I=220/6.82≈32.27 欧

IIISheath type electric heater 380VCommon tests and inspections

1. Resistance test, cold withstand voltage test, cold insulation test.

2. Power test, hot insulation test, hot withstand voltage test, leakage current test.

3. Tide test, salt spray test, life test, and other mechanical tests.

4Sheath type electric heater 380VPerformance requirements

1. Under the test voltage, the heating time for the component to rise from the ambient temperature to the test temperature should not exceed 15 minutes. 2. Under sufficient heating conditions, the deviation of the rated power of the component should not exceed the range specified below;

2. The component with the ability to withstand power on and off should be able to withstand 2000 power on and off tests under the specified test conditions without damage

3. Overload capacity components should withstand 30 cycles of overload testing under specified test conditions and input power without damage

4. Heat resistant components should withstand 1000 cycles of heat resistance testing under specified test conditions and voltage without damage

5、 Precautions for using shell connected single head electric heating tube

1. Components should be stored in a dry place. If the insulation resistance drops below 1 megaohm due to long-term storage, they can be dried in an oven at around 200 ℃ for several hours (or subjected to low voltage for several hours) to restore the insulation resistance.

2. When carbon deposits are found on the surface of the pipe, remove them completely before use to avoid reducing efficiency or even burning out components.

3. When melting solid oils such as asphalt and paraffin, the voltage should be reduced and then increased to the rated voltage after melting. To prevent the concentration of electricity and reduce the service life of components