UPS (Uninterruptible Power System) is a kind of contain energy storage device to inverter as the main part of the constant pressure constant frequency uninterrupted Power supply. Mainly used to give single computer, computer network system or other power electronic devices provide uninterrupted power supply. When mains supplyicoil normal, UPS will input voltage supply utility to load after use, UPS is a communication at the same time, it also utility regulators to battery inside machine; When utility power interruption (accident immediately), UPS power, the built-in battery by inverter conversion method to load continue to supply 220V ac makes load maintain normal work and protect load software and hardware are not damaged.
UPS as protective power equipment, its performance parameters has an important meaning, and when the choose and buy should be our consideration of focus. Utility voltage input a wide range, the use of time.it is that strong ability to reduce battery discharge). ( Output voltage, frequency range small, shows strong ability of utility adjust, stable output. Waveform distortion rate to measure the output voltage waveform stability, and voltage stability show when UPS suddenly by zero load added to full load, output voltage stability.
And UPS efficiency and power factor, the conversion time etc. Are the important parameters of characterizing UPS performance to load, decided to protect ability and the utilization rate of utility. Performance is better, protection ability becomes stronger, generally speaking, the back-up type of load protect UPS the worst and the online interactive slightly superior, online type criterion almost solves all problems common power. Of course costs also with the enhancement and rising. Performance So the user in the choose and buy UPS, should according to the requirement of electric power load and load the importance degree of different, and choosing different types of UPS.
UPS role
Ups main play two action:
One is the emergency use, prevent suddenly loses power and affect the normal work, damage to computer;
2 it is to eliminate the surge, the time.it is instantaneous moments of high voltage, low voltage, wire noise and frequency offset, etc "power pollution", improve power quality, provides the high quality for the computer systems of power sources.
UPS classification
From the 1960s UPS the rotating generator with the development level of intelligence today - the motionless all electronic circuits, and continues. Mainstream UPS manufacturer had the APC, mountain pl, provide various levels of UPS meet different needs of user groups. At present, UPS is normally refers to motionless UPS, according to the working way classification can be divided into backup type, online interactive and online type three categories.
1. Backup type UPS: in normal mains supplyicoil directly by the utility to load power supply, when beyond the scope of work or utility power, through the switch to battery power inverter. Its features are: simple structure, small volume, low cost, but the input voltage output voltage stability, narrow range, have poor precision, and the output waveform switch time is generally square wave.
2. Online interactive UPS: in normal mains supplyicoil directly by the utility to load power supply, when utility when high or low voltage circuit, by UPS internal voltage output, when after power utility abnormal or switching, through to the battery inverter power supply. Its features are: have a wide range of input voltage, low noise, small size wait for a characteristic, but also exists switching time.
3. The on-line UPS in normal mains supplyicoil by adjustment.nowadays, to provide dc voltage rectifying the inverter, provide by inverter to load in alternating current, utility anomalies, inverter by byteris, inverter is always in the work of the state, ensure uninterrupted output. Its characteristic is, a very wide input voltage range without switching time, high precision and output voltage stability, especially suitable for power demand higher occasions, but the cost is higher. At present, the power is greater than UPS is almost 3KVA on-line UPS.
UPS according to output capacity 3KVA divided into small capacity size, and small and medium-sized capacity under 3KVA ~ 10KVA 10KVA cuhk capacity above. UPS way according to the input/output can be divided into three categories: single-phase input/output, single-phase three-phase input/single-phase three-phase input/output, three-phase output. For users, three-phase load distribution and the utility power distribution easy, each phase may in part load current, high power, and many use three-phase UPS single-phase three-phase input/output or input/output. The power-supply modes three-phase
From its principle, saying, UPS is an aggregate digital and analog circuits, automatic control inverter and free maintenance storage device in one of the power electronic equipment;
From the function for, UPS can anomalies in utility, effectively purify utility; Can a sudden interruption in the utility when certain time to continue such as computers, so you can supply equipment have plenty of time to deal with;
In part, from USES with the advent of the information society, UPS is widely used in from information collection, transmit, processing, storage to application of each link, its importance is along with the increasing importance of information applications increased.
From the basic application principle of speaking, UPS is a contain energy storage device to inverter for main components, the instability frequency output voltage of power protection equipment. Mainly by the rectifier, batteries, inverter and static switch etc. Several parts.
UPS as protective power equipment, its performance parameters has an important meaning, and when the choose and buy should be our consideration of focus. Utility voltage input a wide range, the use of time.it is that strong ability to reduce battery discharge). ( Output voltage, frequency range small, shows strong ability of utility adjust, stable output. Waveform distortion rate to measure the output voltage waveform stability, and voltage stability show when UPS suddenly by zero load added to full load, output voltage stability.
And UPS efficiency and power factor, the conversion time etc. Are the important parameters of characterizing UPS performance to load, decided to protect ability and the utilization rate of utility. Performance is better, protection ability becomes stronger, generally speaking, the back-up type of load protect UPS the worst and the online interactive slightly superior, online type criterion almost solves all problems common power. Of course costs also with the enhancement and rising. Performance So the user in the choose and buy UPS, should according to the requirement of electric power load and load the importance degree of different, and choosing different types of UPS.
UPS role
Ups main play two action:
One is the emergency use, prevent suddenly loses power and affect the normal work, damage to computer;
2 it is to eliminate the surge, the time.it is instantaneous moments of high voltage, low voltage, wire noise and frequency offset, etc "power pollution", improve power quality, provides the high quality for the computer systems of power sources.
UPS classification
From the 1960s UPS the rotating generator with the development level of intelligence today - the motionless all electronic circuits, and continues. Mainstream UPS manufacturer had the APC, mountain pl, provide various levels of UPS meet different needs of user groups. At present, UPS is normally refers to motionless UPS, according to the working way classification can be divided into backup type, online interactive and online type three categories.
1. Backup type UPS: in normal mains supplyicoil directly by the utility to load power supply, when beyond the scope of work or utility power, through the switch to battery power inverter. Its features are: simple structure, small volume, low cost, but the input voltage output voltage stability, narrow range, have poor precision, and the output waveform switch time is generally square wave.
2. Online interactive UPS: in normal mains supplyicoil directly by the utility to load power supply, when utility when high or low voltage circuit, by UPS internal voltage output, when after power utility abnormal or switching, through to the battery inverter power supply. Its features are: have a wide range of input voltage, low noise, small size wait for a characteristic, but also exists switching time.
3. The on-line UPS in normal mains supplyicoil by adjustment.nowadays, to provide dc voltage rectifying the inverter, provide by inverter to load in alternating current, utility anomalies, inverter by byteris, inverter is always in the work of the state, ensure uninterrupted output. Its characteristic is, a very wide input voltage range without switching time, high precision and output voltage stability, especially suitable for power demand higher occasions, but the cost is higher. At present, the power is greater than UPS is almost 3KVA on-line UPS.
UPS according to output capacity 3KVA divided into small capacity size, and small and medium-sized capacity under 3KVA ~ 10KVA 10KVA cuhk capacity above. UPS way according to the input/output can be divided into three categories: single-phase input/output, single-phase three-phase input/single-phase three-phase input/output, three-phase output. For users, three-phase load distribution and the utility power distribution easy, each phase may in part load current, high power, and many use three-phase UPS single-phase three-phase input/output or input/output. The power-supply modes three-phase
From its principle, saying, UPS is an aggregate digital and analog circuits, automatic control inverter and free maintenance storage device in one of the power electronic equipment;
From the function for, UPS can anomalies in utility, effectively purify utility; Can a sudden interruption in the utility when certain time to continue such as computers, so you can supply equipment have plenty of time to deal with;
In part, from USES with the advent of the information society, UPS is widely used in from information collection, transmit, processing, storage to application of each link, its importance is along with the increasing importance of information applications increased.
From the basic application principle of speaking, UPS is a contain energy storage device to inverter for main components, the instability frequency output voltage of power protection equipment. Mainly by the rectifier, batteries, inverter and static switch etc. Several parts.
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