What is the meaning of UPS bypass

UPS is accompanied by the birth of the computer and appeared, as a computer peripheral equipment, UPS is a kind of containing energy storage device, inverter as the main components, voltage stabilization and frequency stabilization output power protection equipment, it can solve the existing power outage, ground voltage, high voltage, sudden wave, noise and other phenomena, so that the computer system operation is more safe and reliable. Now it has been widely used in computer, transportation, banking, securities, communications, medical, industrial control and other industries, and is rapidly coming into the family. how many types of UPS Usually we distinguish UPS according to the design of the architecture of the three kinds of UPS, that is, backup, on-line and on-line interactive. The output waveforms of UPS are square wave, sine wave and step wave. Pure utility power is the standard sine wave, is the most ideal waveform; square wave of the amount of high harmonics more, will affect the work of precision instruments; step wave is a special form of square wave, which is between the square wave and the sine wave, this waveform output UPS is suitable for the power supply requirements are not particularly stringent loads to use. UPS according to the capacity distinction for small UPS: 10KVA below; medium-sized UPS: 10KVA above, 100KVA below; large UPS: 100KVA above. A wide range of UPS in the battery-powered state is not very different, all for the inverter output, the main difference lies in the state of the utility state of the work. At this time, the online type is still the inverter output, there is an independent charging circuit; online interactive (or online interactive or online interactive) for the direct output or utility coupled to the transformer output, this time the inverter for the charger; backup type for the direct output or utility coupled to the transformer output, the inverter does not work at this time there is a separate charging circuit. A UPS can be used for at least 3 years. Users in the selection of UPS power supply, should be based on their own requirements to determine the selection criteria, choose the most suitable for the use of UPS, rather than the cheapest or the most high-grade. In general, the importance of the information handled by the load equipment, the requirements of various power equipment on the quality of the power supply, installation and space requirements and their economic budget and other factors should be considered, but also the weight and size of the UPS is appropriate. In general, users should consider three factors: namely, technical performance, service warranty and product price. Step 1: First confirm what type of UPS you need on China's current power situation, UPS is a very necessary power protection equipment, different users of the UPS type of demand is also different, such as: important equipment must be selected with excellent performance, high safety factor of the on-line types of machines, on-line UPS function is complete, can resist a variety of infringements from the grid, such as high voltage, spikes, surges, noise interference, etc., the output is pure, and the output can be used as a power source for the power grid, and the power source can be used as a power source for the power grid. On-line UPS has perfect function, which can resist all kinds of aggressions from the power grid, such as high voltage, spike, surge, noise interference, etc., and output pure power to protect your load at all times. Network users in addition to the choice of online type, you can also consider online interactive UPS. online interactive UPS, although there are many types of UPS, the quality of good and bad, but like Santak's Inter series of UPS, through the power supply software to monitor the network environment, management of the network power supply, is also very suitable for network use. Individuals and home users can consider choosing a backup model, backup UPS is inexpensive, lightweight, is the ideal partner for personal computers. It has a conversion time of less than 10 milliseconds when switching from mains to battery power, and PCs have capacitors for storing electrical energy and can tolerate a conversion time of less than 20 milliseconds for a power outage, so it won't affect the normal use of PCs. Step 2: Determine the value of UPS power (VA) you need List all the devices to be protected, not forgetting monitors, mainframes, external hard disks, and so on. The voltage and power data for each device can be found on its back panel, multiply the two to obtain the (VA) volt-ampere value. Some devices use watts (W) to indicate power requirements; multiply the wattage by 1.4 to get an approximate VA value. Summarize the VA values for all components; add 30% of the summed value to the reserved expansion capacity in case of a system upgrade. Step 3: Determine the standby time required by the load equipment When the power is off, the load equipment only needs to be stored and shut down, it is recommended to choose a standard UPS When the power is off, the load equipment still needs to operate for a long period of time, you should choose a long-lasting type of UPS Step 4: It is very important to choose a good brand of UPS for the following reasons: a UPS of a good brand has a guarantee of product quality. After-sales service is thoughtful and timely. A UPS has a service life of at least 3 years, so it is best to choose a brand that can provide 3-year warranty service. In addition, the size of the sales and maintenance service network coverage is also a factor to be considered when buying, which can ensure timely maintenance and repair of the product. Good brand UPS manufacturers cherish the reputation of the product, the commitment to the user's word. Normal start-up procedures due to the general load in the start-up moment there is an inrush current, and UPS internal power components have a certain range of safe working area, although we have a certain margin in the selection of devices, but the excessive inrush current will shorten the service life of the components, or even cause damage to the components, and therefore try to minimize the damage caused by the inrush current when in use. General UPS in the bypass work is more resistant to impact, we can use this feature in the following way when the power on, first send the utility to the UPS, so that it is in the bypass work, one by one to open the load, the first open the load of the impact current is larger, and then open the load of the impact current is smaller, and then the UPS panel power on, so that it is in the inverted state of work. Never turn on all the loads at the same time when powering on the UPS, and do not power on the UPS with a load. Shutdown order shutdown order is as follows, first turn off the load one by one, and then the UPS panel shutdown, so that the UPS is in the bypass work and the charger continues to charge the battery pack, if you do not need the UPS output, the UPS will be completely shut down, and then the input utility can be disconnected. The use of backup UPS backup UPS in the case of normal utility power, are bypass power supply, only by the input fuse protection, such as the user does not pay attention to this point, and overloaded, although the utility state UPS can continue to work, but when the utility power abnormalities to the battery inverter work, it will be due to overload protection and shutdown. Serious damage to the UPS will be caused by the above situation will cause output interruption, bringing some losses to the user. Therefore, in the use of backup UPS should pay special attention not to overload. The use of long-lasting UPS long-lasting UPS due to the use of external battery packs to extend the power supply time, so the external battery is good or bad directly affects the discharge time of the UPS. Therefore, in the use of long-lasting UPS should pay special attention to the use of batteries and maintenance, on the use of battery maintenance please refer to the content of the future. Due to the long-lasting UPS external battery and UPS host is separate, connected to each other by the battery cable, generally normal use will not have any problems, but when the user in the installation (Santak C Series 3K or more machines must be installed by professionals) or move the machine will need to be reconnected, in the connection due to the following issues: ① Battery connected to the correct polarity of the voltage;