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Three Phase Voltage Stabilizer

  • SVC Digital Display (Three-Phase) Automatic Voltage Stabilizer
    ♦ Wide Input voltage:three phase AC240~450V♦ High technology: Programmed control computerized♦ The high accuracy of the output voltage(380v+/-1.5%)♦ Quality insurance: Main spare parts made by ourselves, for example, transformer, PCB.♦ Perfect protection function: Over/low voltage protection, over-heat/load protection,short circuit protection.♦ High efficiency: More than 95%
  • SVC Analog Meter (Three-Phase) Automatic Voltage Stabilizer
    ♦ Wide Input voltage:three phase AC240~450V♦ High technology: Programmed control computerized♦ The high accuracy of the output voltage(380v+/-1.5%)♦ Quality insurance: Main spare parts made by ourselves, for example, transformer, PCB.♦ Perfect protection function: Over/low voltage protection, over-heat/load protection,short circuit protection.♦ High efficiency: More than 95%

Three Phase Voltage Stabilizer

3-phase voltage regulator is a type of electrical equipment used to stabilise the voltage of a three-phase supply. Its main function is to provide a stable voltage output to three-phase load equipment in the event of fluctuating or unstable power supply voltages.


The operating principle of a 3-phase voltage regulator is as follows:

  • Input voltage monitoring: The voltage regulator monitors changes in the input voltage in real time by sensing the voltage conditions of the input three-phase supply.

  • Control unit: The regulator is equipped with a control unit which, based on the results of the input voltage monitoring, determines whether regulation is required and decides on the manner and amount of regulation.

  • Regulating device: Voltage regulators usually use transformers and voltage regulators to achieve voltage regulation. When the input voltage changes, the regulator keeps the output voltage stable by adjusting the winding of the transformer or controlling the operating state of the regulator according to the instructions of the control unit.

  • Output voltage: By regulating the input voltage, the voltage regulator provides a stable voltage output to the three-phase load equipment to ensure its normal operation.


When selecting a suitable three-phase voltage regulator, the following factors can be taken into account:

  • Rated capacity: Determine the rated capacity of the regulator based on the power requirements of the load equipment to ensure that the regulator is able to supply sufficient current.

  • Input voltage range: Know the voltage range of the input supply and select a regulator that can accommodate that range.

  • Stability requirements: Based on the load equipment's requirements for voltage stability, select a regulator that can provide sufficient stable output.

  • Control mode: choose a voltage regulator with manual control or automatic control, as required.


The differences between single-phase and three-phase voltage regulators are as follows:

  • Number of input/output phases: Single-phase regulators are suitable for single-phase power supplies and load equipment, whereas three-phase regulators are suitable for three-phase power supplies and load equipment.

  • Stability: Three-phase regulator is usually more stable than a single-phase regulator because it can provide a more stable output by compensating for each other with a three-phase supply.

  • Power range: Three-phase regulators typically have a larger power range and are suitable for large industrial and commercial load equipment. Single phase regulators, on the other hand, are suitable for smaller residential and commercial load equipment.

  • Equipment complexity: Three-phase voltage regulators are relatively complex to design and install due to the three-phase power supply and interrelated load equipment involved, whereas single-phase regulators are relatively simple.



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Email:  tl@taileiok.com

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