How to choose the resistance value of an electric heating tube device??

1、 Estimation method for resistance of electric heating tubes
The formula for estimating the resistance of an electric heating tube is: internal resistance=the second power of the heating tube current/power. Simply put, when the current is maintained at 220V and the power is 10KW, the resistance of the electric heating tube is 4.84 ohms.
2、 The relationship between voltage, resistance, and power
Although in order to better estimate the internal resistance of the heating tube device, it is necessary to first understand the current and power parameters. Only by determining these two parameters can we better estimate the size of the internal resistance value, and then determine whether the electrical parameters are selected correctly based on the size of the internal resistance value.
3、 Measure resistance value
Not only can the internal resistance value be estimated, but the internal resistance value of each type of heating tube product can also be detected through the device. Nowadays, a multimeter has been launched on the market, which can effectively help us detect the resistance values of various electric heating tubes. The operation is very convenient, and the detection process is also quite safe and stable.
4、 There is a difference between the hot and cold states of resistors
It should be noted that there are differences in the internal resistance values between hot and cold states of electric heating tubes nowadays. When the internal resistance value exceeds 100 ohms, it indicates that the heating tube device is a relatively good electric heating tube manufacturer. If the internal resistance value is higher than this standard, it indicates that there is a certain performance or quality problem.