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How do you choose the right high-power regulator?

PostTime: 2021/9/7 16:00:41   Views: 685   Source: RED EVERYDAY ELECTRICAL

The high-power regulator we often say mainly refers to the three-phase AC regulator above 50KVA, mainly including compensation regulator, contactless regulator and oil immersed regulator. Next, let's see how to choose a suitable high-power regulator?

For those who have used high-power voltage regulators, I believe they will not be confused about any choice, because the previous experience of voltage stabilizing equipment is the basis for your rational choice; If you are a novice user of voltage stabilizing equipment, you need to make careful equipment selection. No matter what type of voltage stabilizing equipment, we need to choose according to the actual needs. Only the voltage stabilizer selected in this way is the equipment that is really suitable for us.

First, we need to determine the nature of your actual load?

Secondly, what is the power of the load?

Third, how about the use environment?

Fourth, the local voltage range?

Finally, according to these current conditions, you can select a high-power regulator suitable for your own load equipment.

The voltage of your load, the power of the load and the nature of the load are the basic factors for us to choose a high-power regulator. Only through the voltage stabilizing equipment with appropriate load can you output a stable and suitable voltage for your equipment. There are many types of voltage stabilizing equipment on the market. Only the voltage stabilizer suitable for everyone can reflect the good connotation of use. If you are a friend with special requirements for voltage stabilizing equipment, you can customize special voltage stabilizing equipment in a formal voltage stabilizer production organization.

Which high-power regulators can meet your use standards? According to your own understanding of voltage stabilizing equipment and your actual requirements for voltage stabilizing use, it is the guarantee for you to choose rational voltage stabilizing equipment.

1. Capacity safety factor


AC regulated power supply takes the output apparent power (kVA) as the nominal rated capacity, but generally, the load is not purely resistive, that is, the power factor cos ¢ 1, and the actual active power output by the regulator kW = capacity (kVA) × COS¢。 Therefore, in the actual selection, the regulated power supply shall be reasonably selected according to the specific conditions such as the rated power, power factor and load type of electrical equipment, and the output power shall be left with appropriate margin, especially the margin shall be larger in the selection of impact load. The specific selection safety factor is shown in the table below


Load nature equipment type safety factor selection regulated power supply capacity


Pure resistive load incandescent lamp, resistance wire, electric furnace and other equipment 1.25 ~ 1.5 times the total load power


Inductive and capacitive load fluorescent lamps, fans, motors, water pumps, air conditioners, computers, refrigerators, etc. 2 ~ 3 ≥ 2 ~ 3 times the total load power


In the environment of large inductive and capacitive loads (such as motors and computers), the starting current of the load should be considered to be particularly large (up to 5 ~ 8 times of the rated current), so the capacity of the voltage regulator should be 2.5 ~ 3 times of the load power.


For example, one three-phase motor is 2.2kW and one motor is 5.5kW. When voltage regulator is selected, the capacity is ≥ (2.2kW + 5.5kW) × 2.5 = 19.25 KVA, that is, at least three-phase sjw-20 KVA voltage regulator shall be selected.


2. Output capacity curve of non compensated regulated power supply


When the input phase voltage of the self coupling voltage regulator (single-phase 0.5kva ~ 3KVA, 10K horizontal and below, three-phase 9KVA and below) is lower than 198v, the output capacity begins to decrease; When the input phase voltage is equal to 160V, it drops to 50% of the rated capacity of the regulator. Therefore, at the low end of the power supply voltage, special attention should be paid to reducing the load derating, so as not to overload and burn the voltage regulator;


The self coupling voltage regulator can output 220V and 110V at the same time. However, even if it is all output by 110V, the load carried by the voltage regulator shall not exceed 50% of the rated capacity, otherwise it is overloaded.


Most computers are 350W now,. It is recommended that you choose 8000w

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