Weak current College】 【ensure UPS running good notes】.

<br> Currently, the introduction of many varieties of UPS, different products from different countries and manufacturers. These UPS works, the design of specific lines. In particular, some manufacturers to commercial needs, often a sign of the integrated circuit model wiped out .. All these factors to the use and maintenance of the UPS bring certain difficulties. Nevertheless, for some common UPS use rules will still be able to find some commonality. Following on the correct use and maintenance of the UPS in a number of clues for your .reference. <br> <br> A note the load on the UPS <br> <br> In order to guarantee the UPS properly, it is important to run UPS cannot be overloaded. For the vast majority of UPS, when they are in .the inverter power supply status, General requirements for its load characteristics is a pure resistive or capacitive. When the load is capacitive, its power factor requirements greater than about 0.8. Therefore, for those who live inductive load of users, it should be noted that .adjustments in the total reactance of the load, as much as possible to meet the conditions of the power factor greater than 0.9. Otherwise, the UPS actual affordable load power will be declined. Manufacturers recommended: UPS boot load best control in UPS rated output power .of less than 80%. For sine wave output of the UPS, the UPS when the load is less than the rated output power of 30% of its output voltage waveform distortion factor will increase slightly. Practice has proved: for the vast majority of UPS ., the UPS load control at rated output power of 30% -60% range is what works best. Therefore, those on the AC input wave form may require users should be aware of this. <br> <br> 2 UPS to keep away .from sources of heat <br> <br> Environmental effects of temperature on the UPS is important. The study found that UPS within the battery in 10 ℃ -25 ℃ environment to benefit. When the ambient temperature rises, the battery itself is inherent in .the "save life" will be gradually reduced. For example: APCSmart-UPS5KVA battery life expectancy in the ambient temperature of 20 ° c to 25 ° c for 5 years, and the temperature is 45 ° c the life of only 1-1.5 years .. So, UPS should avoid close to heating, heat, and also to avoid direct sunlight. <br> <br> Ambient temperature or too low, if the temperature is too low for less than 5 ° c can cause the battery release significant reduction .of power. In addition, keep clean UPS work environment is also important. When the UPS in the muddy environment, floating in the air of the harmful dust once inside the UPS, its internal devices cause corrosion or short circuit, thus affecting the normal operation .of the UPS or even damage to the UPS. <br> <br> Three battery usage and maintenance <br> <br> UPS a very important part is the battery, it can be said that the battery is the center of energy of ups .. Today, the vast majority of small power UPS are used without maintenance sealed battery. Superficially the battery does not need to maintain, but improper use, not to do regular maintenance will also be a problem. According to the figures indicated that because of battery .failure UPS does not work for approximately 30% ratio. Therefore, the correct use and maintenance of good battery is critical. To that end users use the batteries need to be aware of the following points: <br> <br> A, excessive discharge .of batteries and battery long way inactive, will make the batteries inside large amounts of lead sulphate and adsorbed to battery cathode to form the so-called cathode "Kraft", the result is a battery, the battery can recharge and discharge performance deterioration. Current .popular M-type seal lead-acid battery life is approximately 3-5 years. <br> <br> B, for the present, when the majority of UPS battery every time after discharge, can use UPS internal batteries charging circuit for floating charge .on the battery. In order to ensure the battery be replaced saturated charging status, General needs charging time of 10 to 12 hours. Charging time enough to cause the battery is in charging is not sufficient. When the battery's actual available capacity is far lower than .the nominal capacity of battery. For UPS, when commercial power supply voltage is lower than 200V, would not be possible to use UPS internal charging circuit charge on the battery are saturated. <br> <br> C, some users use lower UPS actual .load power or increase the battery capacity to prolong the battery's discharge time. <br> <br> D, when the UPS batteries in using one of the following circumstances encountered in, to the resurrection of the rechargeable battery discharge characteristics should be used in charging .solutions to. The so-called balanced charge is put each battery cells connected in parallel, using unified charging voltage for charging operation. Need a balanced on the battery charge is: <br> <br> (1) excessive discharge allows battery terminal voltage .below the battery allows discharge voltage. M for 12V lead-acid battery, the discharge end voltage 10.5V around; <br> (2) battery, the battery unit Terminal voltage difference between more than 1V or so; <br> (3) .long-term standing without battery (including new purchases of battery); <br> (4) replace the electrolyte batteries. <br> <br> Four correct use of the UPS <br> <br> In order to guarantee the UPS and .the belt load correctly and physical security, and correctly use the UPS is also very important. First of all, UPS power long initial use or put some time after time, you must first access the AC UPS its charging circuit, UPS battery for charging. .On low power UPS, usually charging time of 10 hours or so. Question battery capacity reaches saturation before put in normal use. Secondly, to determine the commercial power supply voltage fluctuation range and selected UPS input voltage ranges. In the connect UPS to note that .UPS input must be grounded and Earth resistance not more than 4 Ω. <br> <br> In addition, UPS and shutdown procedure must be correct. UPS internal power symbol has a rated current, the current is too large to cause the power component .life shorten or even destroyed. Therefore, you should turn on power, UPS power switch, and then one by one open load switch. Open load from impulse current large loads to impact current small load one by one. All the load must not be opened .at the same time, much less load on the system. When you shut down one by one off load first, and then shut down the UPS switches, and finally close UPS mains switch. Similarly, you can't take a load off. < .br> <br> From here we can see that the user is using UPS, the UPS work better many issues that need attention. Except as mentioned above, you also need to note the lightning and strong radio interference, and other possible interference UPS good .run. <br> <br> <br> <br> <br>.