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Performance Requirements For Tubular Heater Heating Element Electrically Heated Tubes
Mar 13, 2018

Performance requirements for tubular heater heating element electrically heated tubes

Performance requirements for electrically tubular heater heating element heated tubes

1 temperature rise time

In the test voltage, the electric heating tube from the ambient temperature rise to the test temperature time should be less than 15min

In this case,

2 Rated power deviation

In the full heat conditions, the electric heating tube of the rated power deviation should not exceed the following provisions of the range;

For rated power of 100W or less for the components: ± 10%.

+ 5% -10% or 10W for components with a rated power greater than 100 W, whichever is greater.

 

3 leakage current

Cold leakage current and leakage current after water pressure and sealing test shall not exceed 0.5 mA

The thermal leakage current at operating temperature shall not exceed the calculated value in the formula, but the maximum shall not exceed 5mA

I = 1/6 (tT x 0.00001)

I-Thermal Leakage Current mA

T- heating length mm

T- Operating temperature ℃

When multiple components are connected in series to the power supply, the leakage current test shall be conducted for the whole group of components.

In this case,

4 Insulation resistance

Cold-state insulation resistance at the time of factory inspection should not be less than 50MΩ

After the sealing test, the insulation resistance after long-term storage or use should not be different from MΩ

The thermal insulation resistance at the operating temperature shall not be less than the calculated value in the formula, but the minimum shall be not less than 1 MΩ

R = "(10 - 0.015T) / t" × 0.001

R- Thermal insulation resistance MΩ

T- heating length mm

T- Operating temperature ℃

In this case,

5 Dielectric strength

Electric heating pipe should be in the specified test conditions and test voltage to maintain 1min, without flashover and breakdown phenomenon

In this case,

6 to withstand the power-off capability

Electric heating pipe should be able to under the conditions of the test under the 2000 power-off test, without damage

In this case,

Overload capacity

Electric heating pipe under the conditions of the test and input power should withstand 30 cycles of overload test, without damage

In this case,

8 heat resistance

Electric heating pipe under the test conditions and test voltage should withstand 1000 cycles of heat resistance test, without damage


Add: No. 16, Road 3, Sanjiang Industry Zone, Shengzhou, Zhejiang, China

Contact:Boris Yue      

Email: boris@benoelectric.com

Contact:Charles Yu     

Email: charles@benoelectric.com

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