A power regulator is a power supply circuit or power supply device that can automatically adjust the output voltage. According to the electrical phase, it can be divided into two types: single-phase regulator and three-phase regulator (3 Phase SCR IGBT type Contactless Automatic voltage regulator SBWZ series), it can convert the fluctuating piezoelectric grid voltage into a stable voltage for the load end, so that various circuits or electrical equipment can work normally under the rated working voltage. To avoid equipment damage caused by unstable voltage fluctuations, the regulator can extend the service life of the load end. The voltage regulator is designed and manufactured using international advanced compensation technology, which can be matched with any nature load.
According to the working mode, the voltage regulator can be divided into three mainstream regulators: non-contact regulator (electronic regulator), purifying AC stabilized power supply, and carbon brush regulator (with contact regulator). The power of the regulator determines the size of the load. If the load power is greater than the output power of the regulator, it will not only cause damage to the regulator but for some low-quality (without load protection) regulators, the damage will not only affect the quality of the product produced by the load but also Will cause damage to the device.
The voltage regulator is composed of a voltage regulator circuit, a control circuit, and a servo motor, when the input voltage or load changes, control The circuit performs sampling, comparison, and amplification, and then drives the servo motor to rotate to change the position of the carbon brush of the voltage regulator. The coil turns ratio is automatically adjusted to maintain the stability of the output voltage. The larger-capacity regulator also uses the principle of voltage compensation.
Since some electrical appliances contain coil components, eddy currents that impede the current will be generated in the early stage of energization. The eddy currents will weaken the instantaneous voltage when the appliance is started, resulting in a slow start, and will strengthen the instantaneous voltage generated after the circuit is broken, which may cause spark damage Circuit. At this time, a voltage regulator is needed to protect the normal operation of the circuit.
When the input voltage or load changes, the control circuit samples, compares, and amplifies, and then drives the transformer device to change the power supply position, and automatically adjusts the coil turns ratio to maintain the stability of the output voltage.
In addition to the function of stabilizing the voltage, the voltage stabilizer is also composed of a voltage stabilizing constant voltage, a control circuit, and a servo motor. When the input voltage or load changes, the control circuit performs sampling, comparison, and amplification, and then drives the servo motor to rotate to change the position of the carbon brush of the voltage regulator. The coil turns ratio is automatically adjusted to maintain the stability of the output voltage. (For more information on the structural characteristics of the voltage regulator, please see-Constant Voltage Regulator: AC Regulator Characteristics and Installation Environment Conditions)
1. Connect to the city power (according to the left-right zero-fire wiring standard stipulated by the state)
① The diameter of the input conductor of the access equipment must be guaranteed ≥ 25mm2 copper core wire
②The input and output line card screws of the access device must be tightened
③ The input and output lines must not be reversed
④The front end of the equipment cannot replace the air switch with a leakage protector
2. Access load
The load power cannot exceed the maximum power of the regulated power supply: for example 50KVA. The general load rate is 50KVA?.8=40KW
①All line interfaces of the output line must be connected tightly, otherwise, the line will be heated due to the large current, which will affect the effective power.
3. Turn on the regulated power supply (it is strictly forbidden to turn on the load first and then turn on the regulated power supply)
① Please make sure that the computer monitor is turned on when the power supply is turned on.
② The input voltage should be measured between 304V-456V before starting.
③Check the output voltage meter that comes with the machine should be 380V.
4. Do not use excessively high loads;
5. Please use enough wires;
6. Please carefully connect the input voltage and the output of the equipment;
7. The output voltage of the instrument and the voltage regulator should be unified;
8. Please choose the same input voltage switch as the power supply voltage;
9. If the fuse is burnt out, please check the load equipment;
10. Use fuses of the same rating, not non-rated fuses or wires;
11. Install in a dry and ventilated place.
The difference between the single-phase voltage regulator and the three-phase voltage regulator is the input and output voltage and the number of access lines. The internal structure and amount are also different. In use, the single-phase voltage regulator is only for power supply of single-phase electrical appliances, while the three-phase voltage regulator can provide regulated power supply for the three-phase voltage regulator, and can also make special requirements for the factory at the time of production. powered by.
The three-phase fully-compensated power stabilizer is the advanced technology imported from Shuo Gong Electric to absorb Western Europe and is designed to stabilize the AC voltage. When the voltage fluctuation of the external power supply network or the load change causes the voltage fluctuation, it can automatically maintain the stability of the output voltage.
Three-phase voltage regulators are usually used in large industrial equipment with an input voltage of 380V. The household voltage is 220V, which is a combination of live lines and neutral lines. Therefore, the general household voltage regulator is to choose a single-phase regulator rather than a three-phase regulator. Therefore, three-phase electricity generally refers to industrial electricity. The input and output wiring of the three-phase voltage stabilizer is generally connected by three live wires. Wiring methods include three-phase three-wire, three-phase four-wire, three-phase five-wire, etc.
The characteristics of the three-phase voltage regulator are good efficiency and excellent characteristics: the use of high magnetic flux, low iron loss silicon steel sheet makes a no-load loss, no load current is minimized, and the highest efficiency in full load use makes the regulator play a high efficiency Yes, reduce power loss.
Wide AC power input range: In the tolerable input range, when the poor AC input power supply can still work normally, all components have been specially selected to resist instantaneous high voltage and large current.
Adopt new process technology and precise machining and adopt aluminum conductor material that is easy to dissipate heat. With this product, it can achieve smaller volume, lighter weight, and maximum capacity. Adopt high-efficiency and wide safety range of industrial-grade components can withstand harsh temperature, humidity, vibration, and dirty environment. Modular design is adopted in the interior, all components are standardized, and the main structure coil part, as long as the interior is kept clean, no maintenance or maintenance is required.
Single-phase voltage regulator generally refers to 220V input and output. The general input and output lines are the neutral lines and the live line, and then the ground wire is added. The three lines are used as the input and output phase numbers. Single-phase voltage regulators are generally used for appliances with lower power. Such as household appliances, office appliances, small experimental equipment, etc.
For users, when the choice of voltage regulator comes, the average user will choose a regulator that is larger than the actual power. The harm caused by the insufficient power regulator will not only affect the work efficiency of the load-side equipment And quality, not only will burn out the voltage regulator, but also more likely to burn out the precision equipment at the load end. Therefore, when choosing a voltage regulator, you should choose the most suitable voltage regulator in terms of power according to the actual use.
1. The voltage stabilizer should be placed in a ventilated, dry, free of direct sunlight and corrosive gases;
2. The power selected by the voltage regulator should be greater than the total power of the electrical equipment;
3. The voltage regulator switch should not be used as the main switch of the equipment. The voltage regulator switch should be turned on first. After the power supply is output, connect different power-using equipment from small to large power in turn, and then turn from large to small when shutting down. Turn off, and finally turn off the regulator switch;
4. The switch of the voltage regulator should not be turned on frequently, and the time interval of each turn on should be greater than 10 seconds, otherwise, it is easy to cause false protection of the voltage regulator, or even damage.
SBWZ three-phase non-contact voltage regulator is a fast automatic voltage regulator based on DSP CPU control, fast AC sampling, effective value correction, zero current conversion, and fast compensation and stability technology. It consists of isolation transformer, SCR module, CPU control unit, and safety protection. The perfect combination of SCR switch technology and transformer realizes true non-contact control, safety, high efficiency, energy-saving, and environmental protection. It is an advanced automatic AC regulator. design. The SBWZ series is ideal for applications in electrical equipment, such as production lines, elevators, automation equipment, laser equipment, industrial robots, and medical equipment. Air conditioners, various household appliances in the factory, transportation systems, telecommunications systems, railway systems, medical equipment, commercial lighting, etc.
AVS-2000 / AVS-2000PLUS / AVS-2000PRO is a series of the latest generation of automatic voltage regulators, they are designed as reliable power protection devices, suitable for common household electrical equipment such as freezing, coolers, refrigerators, beverage coolers, etc. High-quality products include a series of related products, such as AVS PRO series Automatic Voltage Stabilizer and other automatic regulators of different specifications. TVs, audio systems, computers, fans, and lights. The latest circuit design is based on an advanced MCU control circuit. It detects the input mains voltage and automatically boosts or lowers the voltage to 220V with an accuracy of 8%. The current-based zero-crossing switch technology ensures a fast response to the voltage regulation response.
The efficient toroidal transformer makes the AVS series compact in size and reliable in performance. In most rural areas of the world, this regulator is the ideal power protection for our daily appliances.
1. When the voltage regulator is used in an inductive load, because the inductive load has a large instantaneous starting current, it is generally about 3-5 times the rated current and often exceeds 9 times the operating current. Therefore, if the regulator is equipped with an inductive load, The power reserve must be considered. If there is a margin, a sufficient margin must be reserved to avoid the immediate damage to the regulator caused by the inrush current generated when the load is turned on. If the whole plant uses a voltage stabilizer when starting the machine, it should avoid starting high-power inductive loads at the same time, so when purchasing a voltage stabilizer, there should be 1.5 times the reserved capacity. The reserved amount for a single machine should be 3 times.
2. Pay attention to whether the voltage value of the commercial power supply exceeds the input voltage range specified by the selected regulator.
3. Before purchasing the machine, we must consider the future business expansion, whether it is necessary to add equipment, and whether the voltage regulator needs to reserve expansion capacity
4. Regardless of whether it is a stand-alone device or a complete plant, it is necessary to reserve a certain reserved capacity for the purchased voltage stabilizer to avoid the load factor of the regulator being 100%. The load factor of the regulator is generally 90%. The shape and structure of the automatic voltage stabilizer are desktops, wall-mounted, dual-use and floor-mounted, etc., and different styles should be selected according to the installation location, main use, and installation capacity.
5. Insiders reminded that when choosing a voltage regulator, they should also pay attention to choose products with high brand awareness because these manufacturers have reliable quality and good service; at the same time, whether the manufacturers have good after-sales service, such as product quality implementation of three guarantees, etc., It is also an important factor that consumers should pay attention to.