The design concept has high reliability, adopts digital control technology and perfect protection circuit, and has good stability; the original imported IGBT module is used for power devices, which has strong overload and shock resistance capability; double transformation online design makes the output of ups as a pure sine wave power supply with frequency tracking phase lock, noise filtering, low distortion and no interference from power grid fluctuation, which can provide users with equipment More comprehensive protection. With strong load protection ability, the standard isolation transformer in the generator has strong anti-interference ability and provides more comprehensive and perfect protection for users' equipment. The minimum zero to ground voltage difference can meet the power supply requirements of precision instruments and equipment, and protect the safe operation of the equipment. Load compatibility is good, can adapt to a variety of different loads, to meet the needs of various applications. It has strong environmental adaptability and wide voltage input range of 304v ~ 456v, avoiding frequent switching to battery power supply, which is suitable for areas with poor power environment. The input frequency range of UPS is wide, which ensures the stable operation of all kinds of fuel oil generators. Battery optimization performance is high, and intelligent battery management technology is adopted to prolong battery life and reduce battery maintenance times. Advanced constant voltage charging technology, * Limited activation of battery, saving charging time and prolonging battery life. The charging current can be adjusted according to the specific situation. The protection is comprehensive and reliable, and it has the function of starting self diagnosis to avoid the fault risk caused by the hidden trouble of ups. It has output overload and short circuit protection, inverter over temperature protection, battery under voltage warning protection and battery charging protection. The stability and reliability of the system are greatly guaranteed. Advanced phase-locked synchronization technology and dual electronic static output switch ensure that ups will not disturb the load during the bi-directional switching operation of bypass power supply and inverter power supply, and when UPS fails, it can switch to bypass working state without interruption, and the utility power supply will continue to supply power to the load and provide alarm information. The humanized LCD display panel of network management can accurately display the ups working environment and working status information to the users, so as to facilitate the users to operate the ups. Through R232 interface and UPS intelligent monitoring software, it can communicate with computer, and various parameters of UPS can be clearly displayed on the communication interface. Connected with SNMP adapter, UPS has remote network management function. It can communicate and manage through various network operating systems through instant UPS data and power information. Energy saving and environment design adopts detachable modular design, which is easy to maintain and highly saves resources; intelligent fan speed control design is adopted, and the fan is intelligently turned on / off and speed regulated according to the load condition of each power component of UPS, ambient temperature and actual temperature rise, which has excellent heat dissipation performance, high energy saving and long fan life.
Can provide a stable voltage and frequency of the power supply called AC stable power supply, also known as AC voltage regulator. At present, what most domestic manufacturers do is AC voltage regulator. However, it seems that we did not expect that, like the economic development process in China, the technological development of voltage regulators around the world also has a tortuous process.
In the past, due to the limitations of technology, the industry has been taking the carbon brush voltage regulator as the main voltage stabilizing equipment, and regarded it as an important part of the voltage balance demand in industry and life. However, with the progress of technology, the shortcomings and problems exposed by the carbon brush regulator are gradually paid attention to by the industry. As a result, other voltage stabilizing devices which can better meet the needs of the society are more accepted and concerned by the market. Among them, contactless AC voltage regulator is an important representative object, so today we compare contactless AC voltage regulator and carbon brush AC voltage regulator to see what characteristics they have and which features we need to pay more attention to.
1. Contact wear
Contactless regulator: as the name implies, it has no contact, because the voltage is regulated by excitation induction, so there is no contact wear, no wear components, and its structure is similar to that of a generator.
Carbon brush type voltage regulator: with contacts, it uses the carbon brush to contact the ring transformer winding surface to adjust the voltage. During the sliding process of the carbon brush, there will be wear due to contact. The structure is similar to the DC motor of portable electric tools.
Carbon brush type voltage regulator: because its working mode is to use the carbon brush to slide and contact the coil surface, sparks (ARC) will be generated during this period, which will cause surge (surge) phenomenon, and the instantaneous surge will cause the control system failure of load equipment.
Contactless voltage regulator: because of its technical characteristics, there is basically no contact between contacts, so there is no spark.
3. Line loss voltage drop
Contactless voltage regulator: low line loss and voltage drop are achieved by using high magnetic beam closed slot silicon steel sheet and high purity oxygen free copper wire cladding wire, combined with high full slot wire laying technology and double-layer winding, so that the line loss and voltage drop can reach * small.
Carbon brush type voltage regulator: high line loss voltage drop ring type transformer is a single-layer multi turn winding with large line loss and high voltage drop.
4. Coil maintenance
Contactless voltage regulator: the induction coil has no wear components, and the coil has no maintenance problems
Carbon brush type voltage regulator: it needs maintenance and is very complex. The carbon brush will wear fast or slow because of its frequent use. The carbon brush needs to be replaced and maintained. If the contact surface of the ring transformer coil is worn, the arc will occur after the carbon brush is worn, resulting in uneven coil plane. During maintenance, unless the coil is reground, the carbon brush will be replaced soon after the carbon brush is replaced. Therefore, the maintenance cost of carbon brush will be very high.
5. Polarity switching
Contactless voltage regulator: when the input voltage is lower or higher than the rated voltage, there is no polarity switching problem.
Carbon brush type voltage regulator: when the input voltage is lower or higher than the rated voltage, the relay is used to switch the positive / negative polarity. When the polarity is switched, voltage drop and sudden wave will be generated. When the input voltage is in low voltage or high voltage for a long time, the use of this mode is no problem, but when the input voltage is in low voltage or high voltage frequently interleaved, it is easy to cause the fault of switching relay and transmission components.
6. Environmental pollution
Contactless voltage regulator: there are no pollutants in the structure, and the probability of environmental pollution is small.
Carbon brush type voltage regulator: as the carbon brush is mainly made of graphite in the product application, the carbon brush will cause wear in the process of use, which will produce carbon powder, and the wear situation often does not appear, which is not suitable for use in clean places.