AVR adopts digital (DAVR), its performance is reliable, and has hard interface with ASS, DEH and DCS and communication interface with DCS. It has two redundant main controllers A and B, which receive signals from different PT and CT secondary sides respectively. The output signals are amplified by pulse amplifiers A and B respectively to form trigger pulses to control the thyristor rectifier. When the working system fails, it will automatically switch to the backup system.With two independent automatic channels. Each automatic channel has a rotor current closed loop function. The two automatic channels are used as backup for each other, and can automatically switch without disturbance in case of failure. Each channel is provided with an independent standby manual channel and meets the generator test requirements.In addition to the more complete control functions, the excitation control system also includes:There are two ways of automatic start and manual start;With self-diagnosis function for hardware and software, it can detect abnormal conditions in time and provide processing steps;It has the function of recording the transition state to provide the purpose of failure analysis and test analysis. The main controller has the function of periodically and cyclically recording control parameters, including at least 32 points of fault signal (or digital input) and 8 points of analog input (such as generator voltage, active power, reactive power and excitation current, etc.) , and the recorded items can be modified.During normal operation, the parameters are recorded all the time. The built-in display screen can easily display the test parameters and dynamic characteristics, and the recorded parameters can also be sent to the special maintenance tool through the communication interface to display the trend in a graphic way.AVR has at least the following limited protection functions:- Forced inverse time limit;- Overexcitation limit and protection;- Underexcitation limit and protection;- Maximum excitation current limit and protection;- VT disconnection protection;- V/H limit and protection, etc.;- Power System Stabilizer (PSS) (response frequency from 0.1~2Hz).AVR has the following basic functions: terminal voltage regulation, magnetic field voltage regulation, constant reactive power regulation, constant power factor regulation, reactive power compensation, etc.The AVR has an analog measurement port for the output signal of the regulator and an analog signal input port for the voltage addition point, so as to measure and set the AVR characteristic parameters. AVR has analog quantity measurement port of PSS output signal and analog quantity signal input port of PSS input point, in order to measure and set PSS characteristic.AVR meets the requirements of anti-electromagnetic interference test in GB/T17626 electromagnetic compatibility test and measurement technology. The AVR cabinet uses natural ventilation and is equipped with a cooling fan. The protective grounding and working grounding of the cabinet are separated. The protection class of the AVR cabinet is IP31. The AVR cabinet can operate normally when the ambient temperature is 45 degrees.The AVR adopts the DC regulated power supply of the device itself. The DC regulated power supply device itself is reliable and requires two independent external power supplies to run in parallel.

An automatic voltage regulator, commonly referred to as an AVR, is essentially a solid state electronic device used in diesel generators. The AVR is designed to facilitate automatic maintenance of the generator output voltage at a preset value, especially when the generator load changes or the generator operating temperature changes. Simply put, the AVR can be said to be an integral part of the alternator excitation system.Do you know? It is generally the alternator manufacturer that provides the automatic voltage regulator! After all, an AVR is essentially part of an alternator. Here, the model of AVR that comes with the alternator depends heavily on the type and the accessories mounted on the alternator.AVR placement in diesel generatorsGenerally speaking, automatic voltage regulators can be found in any of the places mentioned below -In the generator main control boxIn the alternator junction boxUnder the back cover of the alternator (usually in the case of small portable generator sets)How does the diesel generator AVR work?The main function of AVR is to control the generator output voltage. It does this by first detecting the voltage from the generator terminals and then comparing it to a preset stable reference to check for an error signal (if any). If there is a difference between the two, the ACR adjusts the field current by increasing or decreasing the current flowing to the exciter stator. This in turn ensures a lower or higher voltage at the main stator terminals.As you probably know by now, the AVR acts as a regulating device, ensuring that the generator's voltage output remains within a predefined range. Thus, it ensures that the generator voltage never drops to the point where it causes any connected electrical equipment or electrical equipment to fail. It also helps keep the generator safe from a low battery.Adjustment of the generator output becomes critical when the rpm of the generator changes - this mainly happens when the rpm of the generator engine changes, because the generator-to-engine gear ratio is fixed. A stable voltage during this time ensures the safe operation of both - the electrical equipment that powers it, as well as the generator battery.Types of Automatic Voltage RegulatorsAccording to the working principle and application, AVR can be roughly divided into the following categoriesContact type automatic voltage regulatorIn this type of AVR, the voltage regulator contacts vibrate relatively slowly, resulting in low voltage regulation accuracy. It is for this reason, and the relatively short service life, that contact AVRs are no longer used in generators.Transistor automatic voltage regulatorTransistor AVRs were developed with the development of semiconductor technology. This type of voltage stabilizer has the characteristics of high triode switching frequency, high adjustment accuracy, high reliability, and low radio interference.IC automatic voltage regulatorIC regulators, also known as integrated circuit regulators, have all the advantages of transistor regulators. In addition to this, it has the benefit of an ultra-small size, which reduces the need for any external wiring, which enhances its cooling.Computer controlled automatic voltage regulatorAs the name suggests, a computer-controlled regulator is primarily dependent on the total load current of the system in communication with the generator computer. Here, the engine computer ensures that the magnetic field circuit is opened and closed in time according to the set value, so that the electrical system operates normally.As AVR is an important part of diesel generators, it is highly recommended that you source from a reputable diesel generator manufacturer, this will ensure that you have accurate details about the part and can be assured of It is maintained and maintained.Frequently Asked Questions about Automatic Voltage Regulator (AVR)Does the AVR have a different design?While most AVRs look similar, sometimes they can vary in size and color. That said, all AVRs have surprisingly similar characteristics, so there's not much difference in functionality.What happens if the generator AVR fails?When the AVR of the generator fails, the generator will inevitably lose its excitation, resulting in a sharp drop in voltage. This could eventually cause the generator to shut down due to an undervoltage fault. If the generator is not equipped with undervoltage protection, it may continue to operate even after a drop, causing serious damage to the equipment.

What is an isolation transformer? An isolation transformer refers to a transformer with electrical isolation between the input winding and the output winding. The isolation transformer is used to avoid accidental contact with live objects at the same time. The isolation of the transformer is to isolate the respective currents of the primary and secondary windings. In the early days, it was used in the power industry in European countries, and it was widely used in the electronics industry or industrial and mining enterprises, machine tools and mechanical equipment in general circuit control power supplies, safety lighting and indicator lights. 2. Why use isolation transformers must first understand my country’s power supply system. When supplying low-voltage users, my country’s power supply system generally adopts a three-phase system. Live wire), the other is the neutral wire, which is at the same position as the earth. When the human body touches the hot bottom plate, it will cause current to pass through the human body and form a loop with the earth, causing electric shock hazards. If you use an isolation transformer, it will be safer, because the primary and secondary exchange energy through a magnetic field, and there is no physical hard connection. Low potential, will not cause electric shock hazard. 3. The role of the isolation transformer The main role of the isolation transformer is to completely insulate the electrical on the primary side and the secondary side, and also isolate the circuit. In addition, the high-frequency loss of its iron core is used to prevent high-frequency clutter from entering the control loop. Using an isolation transformer to suspend the secondary to the ground can only be used in occasions where the power supply range is small and the line is short. At this time, the capacitance current of the system to ground is too small to cause personal injury. Another very important role is to protect personal safety and isolate dangerous voltages.

The first step: power connection. Connect the regulated power supply to the electricity supply. Step 2: Turn on the power. When the load is not connected, press the main power switch, and then turn on the DC output switch of the power supply to make the power output work normally (some simple adjustable regulated power supplies have only the main power switch and no independent DC output switch). At this time, the current working voltage and output current are displayed on the digital indicator of the power supply. Step 3: Set the output voltage. By adjusting the voltage setting knob, the digital voltmeter displays the target voltage, and the voltage setting is completed. For the power supply with adjustable current limiting function, there are two sets of adjustment systems to adjust the voltage and current respectively. It must be clearly distinguished when adjusting. Generally, the potentiometer for adjusting the voltage has the word "VOLTAGE", and the potentiometer for adjusting the current has the word "CURRENT". Many entry-level products use low-cost coarse/fine dual-knob settings. In the case of dual-adjustment knobs, we first turn the fine-adjustment knob to the middle position, then set the approximate voltage through the coarse-adjustment knob, and then use the fine-adjustment knob. Accurate correction. Step 4: Set the current. Press the "Limit" button on the power panel and hold it down. At this time, the ammeter will display the current value.Adjust the current knob to make the current value reach a predetermined level. Generally, the current limit can be set at 120% of the commonly used maximum current. Some power supplies do not have a dedicated adjustment key for current limiting. The user needs to short-circuit the output terminal according to the requirements of the manual, and then set the current-limiting level according to the short-circuit current with the current-limiting knob. The simple adjustable regulated power supply has no current setting function and no corresponding knob. Step 5: Set OVP for overvoltage protection. Overvoltage setting refers to further limiting an upper limit voltage within the adjustable voltage range of the power supply itself, so as to prevent the power supply from outputting excessively high voltage during misoperation. Generally, the overvoltage can be set to the level of 120% of the usual maximum working voltage. Overvoltage setting requires a flat-blade screwdriver to adjust the potentiometer recessed in the panel, which is also a design to prevent misoperation. When setting the OVP voltage, first adjust the operating voltage of the power supply to the target overvoltage point, and then slowly adjust the OVP potentiometer to make the power supply protection act exactly, and the OVP setting is now complete. Then, turn off the power, lower the operating voltage, and it will work normally. To set the working voltage, refer to the third step above. Different power settings have different OVP methods. The sixth step: communication interface parameter setting and remote control operation setting. For local control applications (panel operation), turn off the remote control operation. The communication interface should be set according to the communication requirements, and the local application does not need to be set. For the use of the regulated DC power supply, I will share with you here. The regulated DC power supply adopts the IGBT module adjustment mode. The specific characteristics of high efficiency, high precision and high stability are mainly used in scientific research institutions, laboratories and electronic products. It is used when high-efficiency power supply is required for testing.

The voltage regulator is the fourteenth batch of energy-saving products in the electromechanical industry. The contact voltage regulator is essentially an autotransformer whose output voltage can be adjusted. Voltage regulators with different capacities have different coil DC resistances, but they are usually very small. 0.4 Euro cannot be used as a basis for judging whether it is burned out. It has a wide range of applications, and is generally used in places such as voltage regulation, temperature control, speed regulation, dimming, and power control.1. The carbon brush of the voltage regulator must ensure a certain thickness;2. The carbon brush has already touched another turn of the coil before the carbon brush has completely removed the turn of the coil that has been in contact;3. At least two turns must be bridged during movement;4. There is always a short circuit between turns during the operation of the voltage regulator. The thicker the thickness of the carbon brush, the more short-circuit turns. Therefore, the thickness of the carbon brush of the voltage regulator varies according to the diameter of the voltage regulator;5. Because the short-circuit between turns will cause short-circuit circulating current, it is necessary to control its size, so the turn voltage of the voltage regulator is generally below 1V. Common high-power voltage regulators have a turn voltage of 0.8-0.9V, and low-power is even smaller, generally ranging from 0.4-0.7V. If the turn voltage is too high, the stability of the voltage regulator will be poorer and it will easily burn out.

Which brand of 220V voltage regulator is good?Shenzhen SST Power Company Limited has a good brand, a well-known domestic brand, stable quality, worry free after-sales, and more than ten years of production technology experience.Shenzhen SST Power Company Limited produces 220V contactless voltage regulator. The advantages of contactless voltage regulator are: no noise, no contact, no mechanical wear, zero maintenance, long service life, LCD display working voltage, clear at a glance, real-time monitoring of working status, voltage stabilization accuracy of up to 1%, voltage stabilization speed of up to 40 milliseconds. This is a high-end voltage regulator with high cost performance. It is suitable for household voltage stabilization, air conditioning, computers, generators, lighting and other electrical equipment that need voltage stabilization.1、 Product introductionSingle phase intelligent contactless voltage regulator is a high-end product developed and produced by our company. Intelligent contactless voltage regulator uses integrated circuit to control several thyristor voltage zero crossing on-off in a specific order to change the size and polarity of compensation voltage. It is the perfect combination of thyristor AC switching technology and transformer technology. Using thyristor (thyristor) instead of machinery and carbon brush to control voltage regulation is an advanced product leading the development direction of high-power power power regulator. It is an energy-saving green environmental protection product with all protection functions, very reliable operation and strong adaptability. It has the advantages of good stability, high efficiency and high precisionPerformance characteristics● CPU intelligent control, digital circuit, stable and reliable● large screen LCD display and humanized man-machine operation interface● no contact, no wear, maintenance free and long service life● the voltage stabilization speed is as fast as 20ms, and can be connected to various types of generators and household appliances● efficiency up to 98%, power consumption ≤ 1%, power saving and money saving● strong anti-interference and purification ability, making the output power completely pure● it has overvoltage, undervoltage, short circuit, phase loss and automatic bypass protection functions; Optional RS232 and RS485 communication ports can realize remote communication monitoring of voltage regulator.● CPU intelligent control, digital circuit, stable and reliable● large screen LCD display and humanized man-machine operation interface● no contact, no wear, maintenance free and long service life● the voltage stabilization speed is as fast as 20ms, and can be connected to various types of generators and household appliances● efficiency up to 98%, power consumption ≤ 1%, power saving and money saving● strong anti-interference and purification ability, making the output power completely pure● it has overvoltage, undervoltage, short circuit, phase loss and automatic bypass protection functions; Optional RS232 and RS485 communication ports can realize remote communication monitoring of voltage regulator.

Shenzhen SST Power Company Limited- focuses on the design, sales and manufacturing of high-end power supply system. It is committed to providing high-quality and reliable power protection solutions for all electrical equipment and data processing processes with important missions, so as to ensure the operation safety of electrical equipment, improve its productivity and availability, and prolong its service life. The products sell well in more than 40 countries and regions in the world, such as Europe, America, Japan, Australia, Southeast Asia, the Middle East and North Africa. With its high-quality product quality and excellent after-sales service, it has won high praise from customers in all walks of life in the world. At present, the intelligent equipment has developed into a well-known professional power company with perfect R & D, manufacturing, sales and technical support services in Chinese mainland. While serving employees, customers and society, the company realizes win-win with partners from all walks of life!