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Does UPS power supply has the same functions of automatic voltage regulator?

2020-07-15

With more and more electrical equipment on the market, the use of automatic voltage regulators and UPS power supplies is very wide, and many feel that the two can replace each other. However, there are differences between them. Many people always mistakenly think that the voltage regulator is a UPS. The following introduces the differences between voltage regulator and UPS power supply from several aspects.


What is a UPS power supply?


UPS power supply is divided into online UPS power supply and backup UPS power supply. Generally, home computers are equipped with backup UPS power supply, which belongs to a type of backup power supply; the backup type is with a voltage stabilizing part, and the relay is used to stabilize the shift. Pressure mode, the effect of voltage regulation is very poor, can not be regarded as a voltage regulator.


The full name of the UPS power supply is an uninterruptible power supply. From the name, it can be seen that it is actually a reserve power supply. After a power outage, the electrical energy stored through the storage battery is converted to output AC current after inversion to power the equipment, and usually switched from the host to the time interval of the backup power supply will not exceed 10 milliseconds, so the power outage will hardly have any impact on the electrical equipment.


What is an automatic voltage regulator?


Automatic voltage regulator is designed for grid voltage instability, mainly for the protection of back-end equipment, and has a relatively complete protection function for equipment. Generally large UPS power supply must also be equipped with a voltage regulator bypass system (voltage stabilizer). The scope of the voltage regulator is very wide, and it can be used wherever electricity is needed (of course, the premise is that the voltage is unstable).


The automatic voltage regulator is composed of voltage regulating circuit, control circuit, and servo motor. When the input voltage or load changes, the control circuit performs sampling, comparison, and amplification, and then drives the servo motor to rotate to change the position of the carbon brush of the voltage regulator. The coil turns ratio is automatically adjusted to maintain the stability of the output voltage.


Functions of automatic voltage regulator:


1. It can stabilize the voltage of low voltage 125V-165V or high voltage 250V-270V between 200-230V, so that household appliances can work normally;

2. When the input voltage is higher than 255-275V or lower than 125-160V, it can automatically cut off the power supply;

3. When there is a sudden call after a power failure, you can delay the output power supply for 5-8 minutes to avoid damage to the appliance due to excessive voltage. When purchasing a household voltage regulator, you must pay attention to the completeness of the above three basic functions.


The automatic voltage regulator is mainly used to stabilize the voltage, to provide a stable power environment for the electrical equipment, and use the electrical equipment to avoid voltage fluctuations or interference. Because the function is completely different from the UPS power supply, and the UPS power supply is also accompanied by an energy storage battery, the price and cost are relatively high.


Of course, it makes sense for many people to mix the regulated power supply with the UPS power supply, because some better quality backup UPS power supplies do have a voltage stabilization function, which is a type of electronic switching regulator. It is used as a voltage regulator, but the voltage regulation effect and voltage regulation accuracy are not as ideal as those of a special voltage regulator.


The differences between automatic voltage regulator and UPS power supply


The UPS power supply is like an emergency power supply. It can be connected to the mains electricity and act as an AC mains voltage regulator, while also charging the internal battery. When the mains power is interrupted, the UPS will continue to supply 220V AC power to the load through the inverter conversion method to ensure that the server in the equipment room will not be powered off.


The automatic voltage regulator can not provide backup power for the server when the mains power is interrupted, but it is designed for the unstable voltage. It is mainly used to protect the back-end equipment and has a relatively complete function of equipment protection. In the case of unstable voltage and high and low, you can use a regulated power supply, but it will not power the server.


The functions and differences between the power supply of the automatic voltage regulator and the UPS are briefly introduced above. In fact, the biggest difference between the two is that the voltage regulator only stabilizes the voltage; the UPS can not only stabilize the voltage, but also be able to stabilize after a power failure. The battery inverter continues to supply power to ensure that the device does not lose power.

In summary, the automatic voltage regulator is what people call the regulator. It is a completely different concept from the UPS power supply. Many people mistakenly regard the regulator and the UPS power supply as the same product. There is a difference, not only the function, but the structure or principle is not a concept at all. Therefore, you can choose according to your actual situation when buying, and you must distinguish it.


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