In the low-voltage distribution network, residential electricity, store equipment, mostly single-phase load, once a phase into the excessive electrical appliances (such as the whole building air conditioning are connected to the A phase), there will be "a phase of heavy loads, two-phase light loads," the imbalance of the state. Specific performance, such as: air conditioning suddenly stopped, light bulbs flicker and so on.

DX-PDS100-SPC/HX three-phase imbalance regulator (phase switch) of DX-PDS100-SPC/HX is like the intelligent balancer of the distribution network, which can automatically allocate loads without manual operation or power supply to restore the balance of the three-phase circuit. Below from the "essence of the problem, the principle of work" to take you to understand it.

First, first understand what the three-phase unbalance? What is the harm?

Take the low-voltage distribution network, it usually uses three-phase four-wire system, like three parallel "power highway" (A, B, C three-phase), the neutral line is "balanced band". Ideally, the three currents are evenly distributed, but in practice, especially the peak of residential electricity consumption, a phase may be accessed dozens of air conditioners, water heaters, another phase but only a few lights; stores, factories, high-power equipment random access, further aggravating the imbalance.

This imbalance may seem insignificant, the harm is not small:

1, electrical appliances are affected: heavy phase voltage reduction, resulting in refrigerators, washing machines can not start; light phase voltage increase, may burn the TV, router;  

2, the transformer is designed according to the three-phase balance, out of balance when the heavy-load phase is easy to overload, resulting in additional losses, and in severe cases, even burned equipment, will also allow the neutral line to generate high current, increasing line losses;

3, the traditional adjustment by manual change line, not only to power outages, but also need to repeat the measurement, encountered in mountainous areas, large communities and other complex scenarios, the efficiency is extremely low and the effect is short-lived.

Second, the core principle: how to change the phase switch intelligent leveling load?

DX-PDS100-SPC/HX three-phase imbalance adjustment device (phase-change switch) of DX-PDS100-SPC/HX, the core of which is to make the three-phase loads equalize from imbalance through "real-time monitoring + automatic phase change".

The three-phase unbalance adjustment device (phase change switch) consists of intelligent phase change terminal and phase change switch unit. The intelligent phase-changing terminal monitors the three-phase current of the low-voltage outgoing line of the distribution substation in real time, reads the relevant real-time data and optimizes the calculation after exceeding the limit, and issues a phase-changing instruction. The phase-changing switch unit changes phase according to the instruction, realizing the phase sequence adjustment of user load and the balanced distribution of three-phase load.

DX-PDS100-SPC/HX type three-phase unbalance regulator (phase change switch) Functional features:

1. Super wide range of voltage regulation, can be continuously regulated; 

2. ultra-rapid regulating switching, only 2ms from electronic bypass to regulating operation;

3. Voltage regulation accuracy up to 0.5%, output voltage 220V/230V/240V optional;

4. Supports capacitive inductive fundamental reactive power compensation, and improves the power factor of the network side;

5. With harmonic voltage compensation, can compensate for 3rd, 5th, 7th and 9th harmonic voltage;

6. Front and rear louvered air ducts, high protection, suitable for outdoor use;

7. Support WiFi connection, convenient query;

8. It can be equipped with cloud platform, which can present the equipment data intuitively, monitor the status and view the records remotely, and centralize the management of multiple AVRs.