Uninterruptible power supply must pay attention to anti-pollution

Communications industry are UPS (uninterruptible power supply voltage regulator) the application of large,laptop battery ,as the core of the whole power supply room, UPS is a problem first and foremost reliability, then it is safe, green, energy-saving, if set aside to talk about green and energy security are meaningless. A standard power supply system of the engine room including transformers, diesel generators, low-voltage distribution cabinets, DC Switching Power Supply, UPS, fujitsu laptop battery, the most important are the power supply unit UPS. Computers are UPS load, and UPS-to-city electric power grid, it is a load. Harmonic pollution caused severe damage to power Ideal UPS should be on the grid are presented purely resistive, that is to say, UPS power factor of 1 are the best, so its power grid, there is no pollution. However, the reality is, we generally use UPS for 50Hz low-frequency silicon-controlled rectifier, hp f1739a, for the city of electricity produced many a harmonic feedback pollution. Before all users are governance before the harmonic pollution problem, as we, like the discharge of sewage treatment plant. Harmonic great harm, it does not Work, but occupied by a large number of grid KVA (transformer unit) resources. Harmonic voltage distortion resulting in increased harmonic increases made to match UPS and generators produce a lot of questions. Usually require power generators are UPS 2 ~ 3 times,omnibook xe battery, otherwise it will be difficult to start the UPS, and even lead to the user switches often inexplicably tripping. Harmonic components are extremely complex, harmonic power factor improve governance is far from being that simple. Lot of people think you add some nice compensation capacitor,hp f2024b , hp f2024a, but only as a linear motor as the load in terms of. For UPS rectifier type nonlinear load, a simple capacitor compensation will prove counterproductive, may lead to further distortion. IGBT is superior to the traditional pulse modulator Currently on the market about UPS harmonic pollution treatment modalities, there are: 6-pulse rectifier + input filter; 12-pulse rectifier; 12-pulse rectifier + input filter; active filter. These methods have a common disadvantage, that is the first pollution control. UPS are used because of thyristor rectifier structure, omnibook xe3 battery, will inevitably result in harmonic pollution, then users are forced to spend large sums of money to govern harmonic pollution. If UPS does not produce or produce very little harmonic pollution, and that users need to spend money to govern it. Eaton Powerware offers full-line UPS using IGBT (insulated gate-type power tubes) rectifier way up from the fundamental current harmonic pollution curbed its down to 3%. For the field of UPS, this structure is the ultimate management of harmonic solutions. Now a lot of users are used to rectifier pulses to evaluate the quality of UPS, they will ask to IGBT rectifier is the number of pulses. Say easy, IGBT rectifier using pulse width modulation manner, IGBT carrier frequency to reach 8300Hz, pulse 8300 can be referred to as the rectifier, but this is certainly better than a lot of 12-pulse rectifier. If the oscilloscope to observe the UPS input voltage and current waveforms, will see the waveform is very pure sine wave, the power grid without any feedback from pollution,hp 346970-001 , hp hstnn-db02 , it is the active harmonic governance. IGBT power components as a sophisticated power electronic components, nearly 20 years of history, hp hstnn-ub02 , hp dp390a, all of the current global manufacturers have put it as inverter components. Eaton Powerware Corporation from 2000 it used to start rectifier, now from 8 to 1100 volt-ampere volt-ampere of the UPS used IGBT rectifier and IGBT inverter. Based on the performance of our country is different from the UPS is divided into 3 categories, like clothing, as there is a materials and secondary commodities. UPS is the best use of IGBT Rectifier UPS, its input voltage range to ± 25% or more,hp pp2100 , presario r3000 battery, input power factor at 0.95 to more than the total input current harmonic distortion is less than 5%. Powerware online UPS all belong to the ranks of the best grade. UPS effectively help users to reduce power consumption Today's computers and servers 10 years ago are very different, very high power density blade servers have been very popular, presario x6000 battery,pavilion zv5000 battery server commonly used dual power supply. And UPS power supply system is also commonly used 1 +1 redundant parallel, therefore, UPS brought a single load are very low. In this way, we can see that UPS full load efficiency of users there is no practical significance, because in reality no one will use UPS full load to 50% can be pretty good. Therefore UPS light load efficiency when the machine instead of a more meaningful for everyone. Powerware UPS at full load can reach 95% of the machine efficiency, 50% at a time when the load can still reach 95%, and even at 25% load efficiency when the machine is still up to 94%. Powerware UPS up to 95% of the whole premise of efficiency are already guaranteed the UPS input power factor is greater than 0.99,pavilion zv6000 battery,pavilion dv1000 battery enter the harmonic distortion of less than 3%, and when only 50 percent load, it can reach 95%. And similar products can only be achieved if the same indicators, but also need to add a large number of options such as input filters, 12-pulse rectifiers and so on, each additional option will further reduce the overall efficiency of UPS. Therefore, the 12-pulse rectifier, the efficiency will be reduced 2%, active power filter system efficiency would reduce the 4%, so much in the actual measurement of the machine 12 pulses UPS efficiency of less than 88%. UPS in the procurement of a lot of people only concerned about the price of the UPS itself, pf723a , hp 367759-001,hp ev087aa not knowing the use of UPS cost is much higher than the value of its own. For example, one of the UPS Units 200KVA its purchase price in about 50 million, but it was a year of electricity 200 × 24 × 365 = 1752000 yuan, or 1.75 million yuan, UPS is the annual electricity 3 times its price. If we make a comparison, the 9395 Series 1 Units Powerware 200KVA UPS machine efficiency of 95 percent, pm579a , pavilion dv4000 battery, while a 12-pulse rectifier efficiency is only about 88 percent. At the 10-year life cycle of the UPS, the Powerware UPS to save electricity by 200 × 0.07 × 24 × 365 × 10 = 122 million. Power will be distributed by the form of heat, so the user had to pay for many electricity users HVAC, and UPS for users unknowingly saved more than 200 worth of electricity. At present, some UPS manufacturers to adopt energy-saving bypass mode, which bypass the principle is that if at a certain voltage range, UPS power supply directly through the bypass, when the UPS is highly efficient, but at the expense of efficient load safety price. Since this time the UPS rectifier inverter does not power supply, power grids in a variety of transient interference with direct load,pavilion dv2000 battery , hp hstnn-lb31,UPS does not isolate the role. And when the city when the electric power, UPS switch is interrupted. Only when in-line double conversion UPS mode, it can provide a full range of power supply load protection. If the load is based on the cost of security in exchange for high-performance, I think nobody will be recognized. Have a little reminder, that is, a lot of users at UPS false start did not load after the test, because then they can not find the fake high-power load. Powerware UPS can provide its own Analog false load testing, we call it EASY LOAD patented technology, UPS internal can produce a full load test. Similarly,hp f4486b ,hp cgr-b1870ae, we can make full battery discharge test. So, this way we can test out the system all the aspect, because the elimination of UPS internal wiring is not strong, loose, such as potential pitfalls.
UPS because once the formal run into inconvenient downtime after the overhaul. Powerware this test function can be found hidden danger for users,hp pavilion dv8000 battery , while saving more than 50,000 yuan false load leasing, the cost of electricity and cable connection.