How to solve the problem of high starting current in the electric heating strip
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Electric heating strip is a type of insulation and antifreeze product used for pipeline equipment, which has the characteristics of simple installation, high insulation efficiency, and convenient use. It has been widely used in pipeline equipment heating and insulation in various industries.
The models of electric heating strips can be divided into two series: self limiting and constant power. The temperature and heating parameters of these two types of electric heating strips are different, and their application areas are also different. It should be noted that the self limiting electric heating band has a higher starting current compared to constant power,
The starting current generally refers to the peak current generated instantly when the electric heating strip is connected to the power supply, and is an important parameter that can reflect the quality of the electric heating strip. If the starting current is large, the length of the electric heating strip used by a single power source will be reduced, which will affect the normal operation of the electric heating system and bring great safety hazards to the operation of the power system in the entire environment. So how to solve the problem of high starting current in the electric heating band?
When the starting current of the self-limiting electric heating strip is high, an automatic current limiter can be used for control and installed in the power box or distribution box. Its main technical feature is that the protection box is equipped with an automatic voltage regulating circuit board connected in series with the load. The automatic voltage regulating device is composed of an automatic unit circuit unit that controls the conduction of the thyristor, a delay circuit unit that controls the relay circuit unit, and a DC power supply circuit. An instrument designed specifically for high load starting current, but with the load being energized, the current quickly decreases and finally reaches a balanced state.
