Why can't the input terminal of the Voltage Stabilizer be equipped with a leakage protector?

2025-05-15

When using a voltage stabilizer, never use a leakage protector at the input of the regulator. This is a major principle used by automatic voltage regulators.

Some users choose the corresponding leakage protector or leakage switch for the voltage stabilizer when using it. The end result is that when the voltage stabilizer is started, the leakage protector is protected, and the voltage stabilizer cannot be used at all. why?

The principle of the leakage protector is that the neutral current is zero. When using a voltage stabilizer, the current in the neutral line cannot be zero.

There are isolation transformer and voltage regulating transformer inside the voltage stabilizer. The transformer is equivalent to the capacitive effect at startup. When the voltage stabilizer is turned on, the instantaneous charging of the transformer and the voltage regulator causes the neutral line to carry current, forming a current loop. If a leakage protector is used at the incoming line, it will act and cut off the input power, causing the regulator to be out of power and unable to be used.

Therefore, customers should not use a leakage protector at the input of the voltage stabilizer. If the customer insists on using it, please use a leakage protector at the output of the voltage stabilizer. To ensure the safe use, the voltage stabilizer must be grounded.

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Related knowledge of voltage stabilizer

A voltage stabilizer is a device that stabilizes the output voltage. It is composed of a voltage regulating circuit, a control circuit, and a servo motor. When the input voltage or load changes, the control circuit samples, compares, and amplifies, 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 keep the output voltage stable.

2025-05-15

How to solve the problem of low voltage at home?

With the development of society, the use of electricity has become more frequent and more diverse, from the original household electricity only for lighting, to the current air conditioning, cooking, computers, mobile phones and so on. However, electricity has also changed steadily with use. In some areas, the voltage is low, which causes the lights to be unable to illuminate, the air conditioner cannot be cooled, the computer often freezes and restarts, and the mobile phone cannot be charged. A series of low voltage problems; High, resulting in frequent burning of electrical components or electrical equipment. Therefore, the best way to solve these problems is to install a voltage stabilizer for your own power grid. When the grid voltage is unstable or the load changes, the voltage stabilizer will automatically sample the voltage stabilizer control circuit to send a signal to drive the servo motor, adjust the position of the stabilizer auto-voltage regulator carbon brush, and adjust the output voltage of the stabilizer to the rated value Value and reach a steady state.