Summary: what is ups uninterruptible power supply? Ups (uninterruptible power system), an uninterruptible power supply, is an uninterruptible power supply containing a storage device with a constant frequency of constant pressure as the main component of the reverse. It is mainly used to provide uninterrupted power supply to single computers, computer network systems or other electrical and electronic equipment。
What's the ups power source
Ups (uninterruptible power system), the uninterruptible power supply, is an uninterruptible power supply containing a storage device with a constant frequency of constant pressure as the main component of the reverse agent. It is mainly used to provide uninterrupted power supply to single computers, computer network systems or other electrical and electronic equipment. When the municipal electricity input is normal, ups supplies the municipal voltage to load use, when the ups is an exchange-market voltage stabilizer, and at the same time it recharges the in-house battery; when the municipal power is interrupted (accidentally out), ups immediately supplies the in-house battery power to the load to continue to supply 220v exchanges via reverse conversion, allowing the load to maintain its normal work and protecting the load and hardware from damage。
Ups function and function
Ups is an abbreviation in english of the uninterruptible power system (uninterruptible power system), which appears with the birth of computers and is one of the peripheral devices commonly used by computers. In fact, ups is an uninterruptible power source containing a storage device with a retrovert as its main component. Ups was considered only as a back-up power in its early stages of development. Subsequently, the electronic systems of equipment such as computers were disrupted due to problems in the quality of the grid, such as voltage surges, voltage peaks, voltage transients, voltage drops, persistent overpressure or underpressure or even interruption of voltage, resulting in serious damage to sensitive elements, loss of information, disk programmes, etc., and significant economic losses. As a result, ups has become increasingly valued and evolved into a system of electricity protection with the capabilities of voltage, voltage, voltage and so on。
A wide variety of ups power units, with output power ranging from 500 va to 3000 kva, are currently available on the market. When there is a municipal power supply to ups, the ups provides power to computers by applying a steady pressure on municipal electricity (220 v ± 5%). The ups at this time is an exchange market voltage stabilizer, and at the same time it recharges in-cell batteries. Depending on the design of ups, the range of ups adaptations varies, and changes in ups output voltages at > 10-15% are normally used by normal computers. When municipal electricity is abnormal or interrupted, ups immediately supplies in-house batteries to the computer system through reverse conversion to maintain normal operation of the computer system and to protect the computer's hardware and software from loss。
Classification and characteristics of ups
Ups power can be divided into two main categories, back-up and online, with an output wave pattern divided into square wave output and sine wave output. When the back-up ups power supply is properly supplied to the municipal power, the municipal power is provided directly to the load by means of a re-conversion switch by means of an exchange sidewalk, and the reversers in the machine are in a standstill. This ups power source is substantially equivalent to a market voltager with very poor pressure performance. Apart from an improvement in the volatility of municipal voltage, there has been little improvement in the adverse effects on the frequency of municipal voltage, wave malformations and interferences from the grid. Only when the municipal power supply is interrupted or less than 170 v is the battery supplied to the ups reverse agent and the load is provided with a steady voltage and steady frequency of communication power. The advantage of back-up ups power is that it is efficient to operate, has low noise and is relatively inexpensive, mainly in situations where there is low fluctuations in municipal electricity and low demand for electricity quality。
An online ups power source turns the municipal power exchange power into a direct current power source, which is then wiring, filtering and re-transmitting the direct power source, i. E., it normally provides a communication power to the load by means of a reverse transformer after the current. In the event of a disruption of municipal electricity, the storage battery will be converted to provide an exchange power source for the load in the reverse mode. Thus, for online ups power, under normal circumstances, whether or not there is a market power, it is always supplied by the ups reverser of the power to the load, thus avoiding all effects of voltage and interference with the municipal grid. It is clear that the power supply from ups on-line is significantly better than the back-up ups power supply, as it achieves a steady frequency of loads, a steady voltage of the power supply, and a zero conversion time when it is converted from municipal to battery power. The ups power belt load of the square wave output (the load is only 40-60% of the rated load) and cannot be carried with a sensory load. If the load is too large, the three-combination elements contained in a square output voltage voltage will increase the volume of the current in the current load and, in serious cases, damage the power filter capacity of the load. The relationship between the output voltage wave malformation and the load of the ups power source of the sine wave is not as obvious as the square wave output of ups power, and the load capacity is relatively strong and carries a microelectric sensory load. Regardless of the type of ups power source, when they are in the state of reverse power supply, failure rates for ups power sources are significantly increased unless, as a rule, they are not fully loaded or overloaded。
Ups matching load
Some upss express their output power as watt (w) or kilowatt (kw), e. G. 500w, 1kw, etc.; others indicate their output power size, e. G. 3000va, 5kva, etc. The normal conversion relationship of va to w is 0. 8 times va, e. G. 3 kva = 2. 4 kw. Ups is for cable load power, and each ups has a specific output power. For example, a 3kva ups with a maximum output power of 3kva or 2. 4kw requires that the total power consumed by the equipment on this ups cannot exceed 2. 4 kw. Usually the equipment indicates power consumption (or rated power) at which point the rated power of all equipment receiving ups should not add up to the output power of ups, which is usually called ups output power matching the load power. However, some devices have a start-up power of 3-5 times the rated power (e. G. Printers with a rated power of 200 w are converted to 5 x 200 w = 1,000 w when calculating load matching). External computer equipment other than printers usually has a start-up power slightly greater than the rated power, so it is preferable to match it with a load of 80% of the ups output power when considering matching。
The standard ups does not add to the battery, when its output power matches the full load power (i. E. Full load), the power supply is generally calculated from the time the municipal power is interrupted for approximately 6-10 minutes (the specific value is recorded in the ups description for each model). If the load-consuming power is only half of the ups output power (the custom is called half-load or 50% load rate, such as 1000 w ups access to 500w load), the power can be provided for 12-25 minutes, and ups power time at different loads can be calculated by doubling the time of halving the load. The correct use of ups power sources not only reduces the possibility of ups failure but also effectively prolongs its useful life。
The usual use of usp power should be noted as follows:
(1) the use of ups power sources shall be carried out in strict compliance with the relevant provisions of the manufacturer's product description to ensure that the line of fire and the order of the zero line in which ups is connected to the municipal electricity supply is in accordance with the requirements。
(2) the main purpose of ups is to prevent the loss of computer information and the destruction of hard drives as a result of sudden power outages, but some equipment works without fear of sudden outages (e. G. Printers, etc.). In order to save ups energy, printers may consider direct access to municipal electricity without going through ups. In the case of a network system, consider ups only to power the host (or server) and its related parts. This ensures that ups will be able to use both the most important equipment and save investment。
(3) do not overload ups. The maximum load of ups power should be 80% of its nominal load (e. G. Ups of 1000w, matching load by 80% load rate of 800w: ups of 1000va by 80% converted to 800w before matching load by 80% load rate of 640w). If overloaded, in a reverse state, they often result in a reverse triode penetration. In addition, during the use of ups, sensory loads such as solar lamps are strictly prohibited and can only be connected to purely electric or smaller electric capacity loads。
(4) switches should be kept in the order of the switch: ups should be activated first, and later (preferably with a delay of 1-2 minutes to get the ups fully operational) and then the load of the power switch should be activated in one place: the sequence is the opposite: turn off the load power switch one by one, before turning off ups. Ups is to be open for long periods of time, while the load of computers, etc., is to be turned on at each time, and when it is finished, it is sufficient to turn off the load of power switches such as the computer。
(5) do not shut down and turn on ups power frequently。
It is generally required to wait for at least six seconds before the ups power is turned on, otherwise the ups power may be in a “start failure” state, i. E. The ups power is in an abnormal state of unmarketed and irreversible output。
(6) there is a risk that the electrical energy in the cells within ups will be depleted or nearly depleted for some reason. In order to compensate for battery energy and improve battery life, ups is required to perform a timely, long-term continuous charge (usually not less than 48 hours, with or without load) to avoid failure due to battery failure. New ups acquired or stored for a long time should be charged for 12 hours before use. Long-term storage of unused ups, charged for 12 hours every 3 months, and every 2 months in high temperature areas. Ups is used without charge and can damage batteries。
