As we all know, in rural areas, the stability of voltage has always been a problem. Under unstable voltages, there are countless messes. Therefore, the use of the voltage regulator is very important, let's take a look at the knowledge of the voltage regulator.
8 precautions for the use of voltage regulators
1. Do not use excessively high loads;
2. Please use enough wires;
3. Please carefully connect the input voltage and the output of the equipment;
4. The output voltage of the instrument and the voltage regulator should be unified;
5. Please choose the same input voltage switch as the power supply voltage;
6. If the fuse is burnt out, please check the load equipment;
7. Use fuses of the same rating, not non-rated fuses or wires;
8. Install in a dry and ventilated place.
How to choose a voltage regulator
1. Please determine the range and frequency of the 220V voltage jump in your home, and then purchase a voltage stabilizer. For example, if the voltage of your home is being pulled to about 80V, and the input range of your voltage regulator is between 140V-230V, it will certainly not play the role you want. Therefore, the voltage stabilizer should be selected according to the power supply range of the use environment. It is recommended to select a broadband regulator.
2. Rated power. Please determine the total power of the equipment you need to regulate. When choosing a regulator, your regulator's rated power should be higher than 30% of the total power of all equipment. You must know that the heat generated by the full load will increase the loss of components. If the overload operation is performed, the required current is too large, and the voltage is bound to be pulled down.
3. Automatic pressure regulation function and precision. When buying a regulator, try to choose the automatic voltage regulator function, although the price may be slightly higher. But it is more cost-effective than the economic loss caused by burning your machine. Old voltage regulators use the principle of relay switching when the voltage changes. At the moment of switching, the current will have a slight floating impact. Therefore, the higher the accuracy, the smaller the current impact.
4. When buying a voltage regulator, it is recommended that you choose a regulator that is three times larger than the actual power. Because in the actual work of the voltage regulator, it is necessary to overcome the surge shock of the commercial power supply and the starting shock of the inductive load (such as refrigerator, air conditioner, motor and motor). The pressure regulator should have a larger margin than the transfer type automatic voltage regulator. Check the appearance quality and processing technology, the operation of the buttons and switches should be flexible and reliable, the parts should not be loose and shake the machine parts, there should be no The sound of objects rolling, otherwise there is a foreign object in the machine.
5. Reasonable selection of the total rated output of the automatic voltage regulator, total capacity = total power of household appliances × 3. The shape and structure of the automatic voltage regulator are desktop, wall-mounted, dual-use and floor-mounted, etc., and different styles should be selected according to the installation location, main use, and installation capacity.
Regulator installation steps
First, connect the voltage regulator input to the power distribution board, and install a fuse that meets the power guarantee rate of the instrument on the user power distribution board to ensure the safety of electricity use.
Second, connect the power supply of the electrical equipment to the output terminal of the instrument. Note that the rated input voltage of the electrical equipment should be consistent with the output of the voltage regulator, and do not connect it wrong.
Third, first turn on the power switch of the regulator, and the work indicator light is on. Observe whether the indicated value of the voltmeter is normal. When the output voltage is normal, turn on the power switch of the electrical equipment, the voltage regulator can automatically adjust the voltage and supply power normally.
Fourth, when the electrical equipment is not used for a long time, please turn off the power switch of the electrical equipment to reduce power consumption and extend the life of the regulator.
Fifth, the voltage regulator must not be overloaded. When the mains voltage is low, the output capacity decreases, and the load on the regulator should be reduced accordingly.
Sixth, when choosing electrical appliances such as refrigerators, air conditioners, water pumps and other equipment with motors running, a voltage stabilizer with a capacity of more than 3 times should be selected to avoid equipment starting current exceeding the voltage stabilizer fuse current or overcurrent protection circuit breaker current The fuse of the voltage transformer blows or the circuit breaker trips or the voltage drop is too large to work.
Seventh, the wire connected to the voltage regulator should have enough load surface to prevent heat generation and reduce voltage drop. Voltage stabilizers with a capacity of 2KVA or more are connected by terminals. A single copper wire should be selected, and the terminal screws should be tightened as much as possible to prevent the connection from heating.
Eighth, whether it is a single-phase or three-phase regulator, after connecting all input and output lines, you should first turn off the power switch of the load, then turn on the regulator, check the output voltage is normal, and then turn on the power switch of the load .
Summary: The above is the contents of the 8 major precautions for the use of voltage regulators and the purchase techniques of voltage regulators. I hope to help you effectively. For more information, please pay attention to this website.
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