The voltage of the connection at both ends of the U type electric heating element may be 220V, or 380V. General heating tube will be marked out, if you know the power, you can measure the resistance value, calculate it is 220V or 380V.
Can also be customized according to the customer to determine the rated voltage is how much, how to determine the rated voltage of U-tube?Let's be clear about the following points:
1. What is the power supply voltage?
How many U-pipes are connected together?
3. What is the connection mode?
Knowing the above three questions, you can answer the question whether the two ends of the U type electric heating tube are connected to 220V or 380V.
Here's an example:
Assuming that 3 U type electric heating pipes are connected together, and the triangular connection method is used to connect the 220V power supply voltage, then the rated voltage of the U type electric heating pipe is 220V.If three U-shaped electric heating pipes are connected together and the power supply voltage of 380V is connected with the star connection method, then the rated voltage of U-shaped electric heating pipes is 220V.
