What is a voltage regulator? A voltage regulator is a machine that stabilizes voltage. Power grid voltage, especially the old power grid because the power supply transformer capacity is not large enough, the voltage will be low when the power load increases, especially with some inductive loads (motors, mixers, etc.) on the same line, the machine starts with low voltage, and the machine stops when the voltage rises. At this time, the regulator will adjust the voltage in the opposite direction, and try to stabilize the voltage to 220V. Do you understand what a voltage regulator is?

What is the role of the voltage regulator

What is the role of the regulator, there are three roles

1. Protect precision instruments with high voltage requirements;

2, the experimental equipment (laboratory equipment)j of the laboratory with higher standards are equipped with a regulator to ensure the accuracy level (accuracy) of the experimental (laboratory) data;

How to choose the right voltage regulator power size?

Now many family voltage is not very stable, this time you need to buy a voltage regulator to use, many friends do not understand the voltage regulator before buying, buy a random, after receiving the goods found that the voltage regulator to buy small, power is not enough to use, resulting in return to exchange, unnecessary freight, waste of time and money. Here to explain how to correctly choose the power size of the regulator.

First of all, it is necessary to see what type of electrical equipment you belong to, generally the load is not pure resistance. Therefore, in the actual selection, the voltage regulator should be reasonably selected according to the rated power, power factor and load type of the electrical equipment, and the output power should have an appropriate margin, especially when the impact load selection is larger.

How to choose the voltage regulator power:

1. Pure resistive load such as incandescent lamp, resistance wire, induction cooker and other equipment, the voltage regulator power should be 1.5 to 2 times the power of the load equipment. For example, if your induction cooker is 250W, you can choose a regulator with a power of 500W.

2. Inductive and capacitive loads such as fluorescent lamps, fans, motors, pumps, air conditioners, refrigerators, etc. The voltage regulator power should be 3 times the power of the load equipment. For example, the motor is 1000W, then the regulator chooses the rule of 3000W.

3. In the large inductive and capacitive load environment, the starting current of the load should be considered when selecting the starting current of the load is particularly large (up to 5 to 8 times the rated current), so the voltage regulator power should be more than 3 times the load power.