The instability of the three-phase voltage is mainly caused by the increase in the electrical load and the line. Therefore, the voltage instability is related to the use of a large number of high-power equipment, but there are still some problems you have not noticed. The single-line load distribution is uneven, which means that the proportion of the load on the three-phase wire is not well distributed, resulting in some phases.
The voltage is high and the voltage is low. The so-called three-phase electrical unbalance, the single-phase power is connected to the live wire and the low voltage is low. The solution is to measure which phase of the three-phase voltage is the most stable and the highest voltage at the peak of power consumption. You connect single-phase electricity to this phase.
The power supply and transmission lines are old and aging, and some connectors have poor contact due to aging and rust. There are large electrical appliances in the circuit, such as large motors. The frequent starting of large motors causes fluctuations in the line voltage. Frequent use of electric welding machines can also easily affect the line. The voltage causes fluctuations. This is mainly due to insufficient compensators in the circuit. This is also the responsibility of the power supply department to transform.
There is also a situation where the voltage range of the regulator output is relatively wide, and the desired effect can be achieved by adjusting the output accuracy of the regulator. The output accuracy of SCIENTEK ELECTRICAL's three-phase AC voltage stabilizer is adjustable from 0.8% to 5%. Just twist the positioner and adjust to the required voltage range.
It is worth noting that when the output voltage is unstable, do not blindly adjust the position of the carbon brush. Blindly manually moving the position of the carbon brush will not work, because the position of the carbon brush is automatically adjusted, and a manual adjustment will only cause damage to the system. Only by adjusting the position of the locator in the system can it be effective. The command system outputs a stable voltage.
The existence of heavy-load users(portable step down transformer), such as factories using electricity, will have a great impact on the grid when they start and stop, and residents around the factory will feel the voltage is unstable.
The peak period of power consumption will cause the surrounding power to suddenly weaken; this is also the most common situation of voltage instability.
The power of the power supply transformer is too small and the voltage is not enough during the peak period. This rectification is more difficult. It requires the unit or group to apply to the power supply bureau, which takes a long time.
Solution: It is recommended to change the thicker wire diameter to solve this problem or use the three-phase voltage stabilizer made by SCIENTEK ELECTRICAL to solve this problem, and the effect will be even better.