Why use voltage stabilizer? 5 reasons to buy a voltage stabilizer to stabilize the power supply

Voltage stabilizers help stabilize the power supply and improve the life of electrical equipment in homes, offices and companies. Join Tnhelearning.edu.vn to see why you should use a voltage stabilizer and 5 reasons to buy a voltage stabilizer in the article below!

What is voltage stabilizer?

Voltage stabilizer is an electrical device used to stabilize and keep the output voltage to suit the needs of use or to meet the correct voltage of electrical equipment, thereby helping electrical equipment to operate. stability and avoid shortening the service life.

Voltage stabilizer has the English name as Voltage stabilizer , in addition to the main function of voltage stabilization, some products are also equipped with many other functions to enhance safety during use such as overvoltage protection. , over-circuit protection, etc.

Working principle of voltage stabilizer

Depending on the type of voltage stabilizer, the operating principle is slightly different. For example, the types of voltage stabilizers on the market today usually operate according to 1 of 5 principles as follows:

• Use transformers and capacitors.
• Using pulse transformer with electronic circuit.
• Use transformer to coordinate relay switching.
• Use a compensating transformer in combination with a toroidal transformer (with brush or IGBT semiconductor).
• Use a toroidal transformer in combination with a brush to take the voltage out directly.

To visualize the operating principle of the voltage stabilizer, Tnhelearning.edu.vn shares with you the operation form of the principle of using a toroidal transformer with a brush motor right below:

Inside the voltage stabilizer, there is usually a toroidal transformer wrapped with electromagnetic wires . On the surface of this coil is attached a brush – it will do the job of sliding to get the voltage of each turn of the wire.

When the output voltage is low (or high), the control circuit will command the motor to operate. At this time, the motor will rotate forward or reverse to get the voltage at the loop on the toroidal transformer.

If the output voltage is enough 220V (according to the popular power network in Vietnam), the comparator circuit will start to command the motor to stop.

When the power is lost, the brush on the coil will automatically return to the safe position, corresponding to the high input voltage so as not to accumulate voltage when the power is restored in the next voltage stabilization.

Why use voltage stabilizer?

Stabilize and improve power supply voltage

In fact, in some areas today, there is also a situation where the power network is not stable (frequently changing).

Therefore, the voltage stabilizer can help stabilize and meet a variety of power ranges such as 90V – 250V, 140V – 250V, … or 60V – 250V, creating a safe electrical system for families, companies and factories. .

Overcurrent protection

The voltage stabilizer can automatically cut off the power when overload or short circuit occurs by Circuit Breaker (CB), thereby avoiding the phenomenon of short-circuiting, causing fire.

Overvoltage protection

The voltage stabilizer can also automatically cut off the voltage when it encounters a problem with the output voltage being too high – exceeding the operating voltage range supported by the voltage stabilizer, thereby protecting the electrical equipment used. After that, the voltage stabilizer will automatically re-energize when the overvoltage fault occurs.

Anti-electric shock

With the Auto-reset function ( Delay system), the voltage stabilizer can automatically return the brush to a safe position when a power failure occurs. Then, when the power is restored, the voltage stabilizer has a delay of about 5 seconds to help stabilize the voltage before supplying the output voltage.

Extend the life of electrical equipment

Thanks to the reversing CB, the voltage stabilizer can stabilize low or high input voltage , so that electrical equipment uses a more stable voltage, contributing to improving the life of these electrical equipment during the process. use.

How to choose a voltage stabilizer for home use?

In fact, voltage stabilizers do not generate energy, but this is a device that helps to improve the output voltage suitable for electrical equipment used such as washing machines, televisions, refrigerators, air conditioners, air conditioner fans, … Therefore, When choosing a voltage stabilizer for your family, you need to determine the following factors:

• For electrical equipment with small capacity , it is recommended to choose a voltage stabilizer with a small capacity or a normal voltage range of 150V – 250V , no need to choose a wide voltage range (90V – 250V or 50V – 250V) to avoid wasting time. Select the output voltage power suitable for electrical equipment.
• For electrical equipment with large capacity , it is recommended to choose a voltage stabilizer with a large capacity to ensure stable operation, no overload and to keep the output voltage stable.

In addition, to avoid voltage drop, you should also choose the conductor cross-section in accordance with the capacity of the voltage stabilizer such as:

• Minimum conductor cross-section 1 mm ² : Suitable for voltage stabilizer capacity of 1 KVA.
• Conductor cross-section at least 25 mm ² : Suitable for voltage stabilizer capacity of 2 KVA.
• Conductor cross-section at least 4 mm ² : Suitable for voltage stabilizer capacity of 3 KVA.
• Conductor cross-section at least 6 mm ² : Suitable for voltage stabilizer capacity of 5 KVA.
• Minimum conductor cross-section 11.5 mm ² : Suitable for voltage stabilizer capacity of 10 KVA.

Notes on using voltage stabilizers

When using a voltage stabilizer, you need to pay attention to a few more issues to help the machine operate efficiently and ensure electrical safety when used as follows:

• Select the cross-section of the input-output conductor in accordance with the machine capacity, avoiding the situation of hot wires and voltage drops.
• Avoid placing the device in a place with water and choose a cool location, helping the voltage stabilizer to spread heat evenly and ensure electrical safety for users.
• It is recommended to connect the ground wire to the machine to ensure safety, to help the machine operate well and not to cause fire or electric shock to the user.
• Fasten the wire ends to the jack to avoid displacement causing heat.

So, with the above sharing, you already know why to use a voltage stabilizer as well as know 5 reasons to buy a voltage stabilizer for your family’s upcoming needs!