Fully industrial AC automatic voltage stabilizer with 8 kVA rating capacity, ±20% tolerance of input voltage range, 3 phase 380V, 415V, 480V output for selection. As highly compact and virtually maintenance free solutions, they are perfectly suited for industrial and commercial buildings and their associated applications and processes.

8 kVA Voltage Stabilizer Specifications

3 Phase Voltage Stabilizer Schematic Diagram

Tips: Using 3 phase 4-line voltage stabilizer or 3 phase 3-line voltage stabilizer?

3 phase 3-line voltage stabilizer: When connected, the input and output lines are all three live lines (L1, L2, L3).

3 phase 4-line voltage stabilizer: Input and output are all four lines, three for the live lines, one for the neutral line (L1, L2, L3, N).

At present, the most commonly used is the 3 phase 4-line voltage stabilizer. For the 3 phase 3-line voltage stabilizer, its application is relatively rare, except in very special equipment. If every wire in the three phase circuit is connected with the same load, and the sum of the current flowing through the neutral line at every moment is zero, it is ok to remove the neutral line and use the three phase three-line system for power supply. However, this is an ideal situation. In fact, the three-phase load formed by multiple single phase loads connected to the three phase circuit cannot be completely symmetrical. In this case, the neutral line is particularly important, not optional.

If there is no neutral line in the case of load asymmetry, an asymmetric 3 phase 3-line system power supply is formed. Due to the asymmetry of load impedance, the phase current is also asymmetric, and the voltage of the load phase is also naturally asymmetric. Some phase voltages may exceed the rated voltage of the load and the load may be damaged. Some phase voltage may be lower, the load does not work properly (light bulb dim). With the change of load impedance of each phase caused by turning on and off the light, the phase current and phase voltage will change accordingly, the light will be dimmed and brightened, and other electrical appliances will not work normally, or even be damaged. So you have to have the neutral line, the three phase four-line system.