A voltage stabilizer is a device that stabilizes the output voltage. The refrigerator needs a power-off protector. In addition to regulating the voltage, it also has the function of delaying the power-off. Because the thermostat of the refrigerator is slow to respond to the temperature. If the power is suddenly cut off when the refrigerator is under high pressure, the thermostat has not had time to respond. If there is electricity suddenly, the refrigerator will restart, which can easily overload the motor and damage the compressor. Therefore, you should buy a refrigerator protector with a pressure regulating function. (If the local voltage is often low, it can be adjusted to a range close to normal. In this way, even a slight increase will not damage the refrigerator. If the local voltage is close to normal, there is no need to adjust).
Why do refrigerators use a voltage stabilizer?
If the voltage in home is unstable, the refrigerator must use an AC voltage stabilizer. Otherwise, the compressor will burn out. The voltage stabilizer for refrigerators is generally the kind that can have a delay protection function. The feature is that at the moment when there is a sudden power outage and then there is electricity all of a sudden, it will be sensed in time, and the refrigerator will be powered after a delay of two to three minutes. If the voltage stabilizer is not functioning in this case, it is likely that it was not tuned properly before installation.
There are ordinary and ultra-low voltage stabilizers for refrigerators. If your voltage is not lower than 160V, you can choose the ordinary type. If the voltage is lower than 160V, you can choose the ultra-low voltage type. Generally, if the load is only a refrigerator, it is enough to buy an 800W voltage stabilizer. If you want to drive air conditioners, induction cookers, and other electrical appliances in addition to the refrigerator, you should consider buying a high-power voltage stabilizer, which generally requires power capacity with 5000W above.
In addition, if the voltage is too low, the voltage stabilizer cannot sense the voltage, and it cannot be regulated. Therefore, it is recommended to use a voltage regulator to convert high-power electrical appliances, preferably one that can adjust the original AC voltage of 50~80V to 220V.
Adjustments for different situations
- If the output voltage of the voltage (that is, the input voltage of the voltage stabilizer) changes in the range of 175V to 210V, it is necessary to ensure that the relays J1 and J2 do not do any work. If a wrong action occurs, it is necessary to adjust the relevant potentiometers (W1, W2), and correct them in time, so that the transformer (L) runs in the boost section.
- If the input voltage value is adjusted to be slightly larger than 210V, the potentiometer (W1) must be adjusted to allow the relay (J1) to do work, but to ensure that the relay (J2) does not work so that the autotransformer works in the straight-through section.
- If the input voltage is adjusted to be slightly larger than 240V, the potentiometer (W2) should be adjusted to allow the relay (J2) to do work. In this case, the autotransformer will work in the step-down section. ATO 10kVA SVC series single-phase voltage stabilizer has the advantages of wide voltage regulation range, high voltage regulation accuracy, delayed output protection, beautiful appearance, and small size. It has the characteristics of an undistorted waveform, reliable performance, and long-term operation. It is equipped with an overvoltage protection function. According to user needs, undervoltage and delay protection functions can be set. It is widely used in home computers, audio equipment, air conditioners, refrigerators, computers, monitoring equipment and testing equipment, lighting systems, communication systems, medical equipment, industrial automation equipment, and other places where electricity is used. It is an ideal regulated power supply.