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This article mainly analyzes the relevant knowledge about how long the service life of the special UPS uninterruptible power supply for the computer room cabinet is. The content is detailed and easy to understand, and the operation details are reasonable, which has a certain reference value. If you are interested, you might as well follow the editor to have a look. Let's go deep into the knowledge of "how long is the service life of the UPS uninterruptible power supply for computer room cabinets?"

Preface

In order to improve the quality of the UPS power supply in the computer room, strengthen the daily management, and ensure that the UPS uninterruptible power supply equipment in the computer room is always in a good environment and the safe and stable operation of the equipment, let's take a look at how long the service life of the UPS uninterruptible power supply can reach. How to maintain UPS power supply and prolong the life of UPS power supply.

Many people wonder how long the service life of UPS uninterruptible power supply for computer room cabinets can reach. This depends on the operating environment, maintenance and maintenance, the company's attitude towards the old UPS, if inefficient, capacity is not enough, the operating environment is poor, such as high temperature, ash layer is too big, damp, etc., will shorten the life of UPS, maintenance and maintenance is not in place, will also shorten the life of UPS.

For example, fans and capacitors must be replaced within 5: 7. If the above is not a problem, UPS can be used all the time. The service life of lead-acid batteries is closely related to battery quality, environmental humidity, charging and discharging times and charging and discharging procedures. Ideal constant humidity 20-25 degrees, less frequent charge and discharge (no more than two or three times a month), regular battery maintenance, good battery and UPS quality for more than 15 years is OK, of course, the longer the use time, the remaining capacity will be reduced. The longest UPS I have ever seen has been used for over 15 years.

Normally, the service life of UPS power supply can reach 8-10 years, while the well-maintained UPS power supply can be used for more than 15 years, such as data centers in many parts of the United States have been used for about 20 years, and the UPS power supply has never been replaced. This has a lot to do with the battery, which is the core component of the power supply, so let's introduce the maintenance of the UPS power supply and how to extend the power life.

Maintenance of UPS Power supply

Uninterruptible power supply is a kind of constant voltage and frequency uninterruptible power supply with energy storage device and inverter as the main component. It is mainly used to provide uninterrupted power supply to a single computer, computer network system or other power electronic equipment. When the power input is normal, the UPS uninterruptible power supply will stabilize the voltage and supply it to the load. At this time, the UPS is an AC power regulator, and it also charges the battery in the machine. When the city power is interrupted (accidental power outage), UPS will immediately supply 220V AC power to the load through the method of inverter conversion, so as to maintain the normal operation of the load and protect the load software and hardware from damage. UPS uninterruptible power supply equipment usually provides protection against excessive voltage and low voltage.

The computer room alarm is divided into the following three levels:

Main alarm: including ventilation equipment group (mainly alarm of new fan and exhaust fan)

Serious warning: including air conditioning and environmental monitoring equipment group (precision air conditioning, computer room special cabinet air conditioning, temperature and humidity, water leakage monitoring, lightning arrester)

Emergency alarm: including fire fighting, power supply and distribution, UPS equipment group (fire system control box, UPS, battery, distribution switch status, power distribution cabinet, ATS status).

(1) the best maintenance conditions are: UPS computer room should be air-conditioned and anti-static floor room, lightning protection effect should be good, dustproof, moistureproof, sunscreen. The input voltage * * is within the design range, and the most reasonable range of load is 30% Mo 60%. Full load and overload use will affect the life of UPS. Maintain it at least once a year. But in reality, it is generally difficult for us to be so considerate, so some common sense of UPS power maintenance is particularly important.

Such as: prevent the accumulation of dust inside the chassis, regular maintenance of the battery inside the power supply, and so on, these maintenance common sense can greatly extend the service life of the UPS power supply and reduce the trouble of maintenance.

(2) maintain suitable ambient temperature: the important factor affecting battery life is ambient temperature. The ambient temperature required by battery manufacturers is between 20 and 25 ℃. Although the increase of temperature improves the discharge capacity of the battery, the price is that the life of the battery is greatly shortened. According to the test, once the ambient temperature exceeds 25 ℃, every 10 ℃ increase in ambient temperature will shorten the battery life by half. If it fails to meet the prescribed environmental requirements, the length of its life will vary greatly. In addition, the increase of the ambient temperature will lead to the enhancement of the internal chemical activity of the battery, resulting in a large amount of heat energy, which in turn will increase the ambient temperature, this vicious circle will accelerate to shorten the battery life.

(3) regular charge and discharge: the floating charge voltage and discharge voltage of the UPS power supply have been adjusted to the rated value when leaving the factory, and the discharge current increases with the increase of the load, so the load should be adjusted reasonably in use, such as controlling the number of electronic equipment such as microcomputers. In general, the load should not exceed 60% of the rated load of UPS. In this range, the discharge current of the battery will not be overdischarged. Because UPS is connected with municipal power for a long time, in the environment of high quality power supply and few power outages, the battery will be in a floating charging state for a long time, which will lead to the decrease of the activity of mutual conversion between chemical energy and electric energy, accelerate aging and shorten the service life. Therefore, it is generally necessary to discharge completely every 2-3 months, and the discharge time can be determined according to the capacity and load of the battery. After a full load discharge, recharge for more than 8 hours according to the regulations.

(4) making use of communication function: most large and medium-sized UPS have operable performance such as communication with microcomputer and program control. Install the corresponding software on the microcomputer, connect the UPS through the serial / parallel port, and run the program, you can use the microcomputer to communicate with UPS. Generally, it has the functions of information query, parameter setting, timing setting, automatic shutdown and alarm. Through information query, you can obtain information such as city power input voltage, UPS output voltage, load utilization rate, battery capacity utilization rate, internal temperature and city power frequency; through parameter setting, you can set the basic characteristics of UPS, battery maintenance time and battery depletion alarm and so on. Through these intelligent operations, it is greatly convenient for the use and management of UPS power supply and its storage battery.

(5) timely replacement of waste / broken batteries: large and medium-sized UPS power supplies are equipped with batteries ranging from 3 to 80, or even more. These individual batteries are connected by circuits to form a battery pack to meet the needs of UPS DC power supply. In the continuous operation and use of UPS, due to the difference in performance and quality, it is inevitable that the performance of individual batteries will decline and the storage capacity can not meet the requirements. When one or some of the batteries in the battery pack are damaged, the maintenance personnel should check and test each battery to eliminate the damaged battery. When replacing a new battery, you should strive to buy the same type of battery from the same manufacturer, and prohibit the mixed use of acid-proof battery and sealed battery and batteries of different specifications.

The method of prolonging the Life of UPS Power supply

There are many ways to extend the life of UPS power supply, among which it is mainly related to the storage battery. Here are a few simple tips.

1. The use of AC voltage regulator: after using UPS power supply, there is no need to add AC voltage regulator. If it must be added, it should be added to the front stage of the UPS power supply, that is, the city electricity first through the AC voltage regulator, and then through the UPS power supply, and then to the load.

two。 The reasonable load should be controlled between 50% and 80%. Practice has proved that the output load of UPS power supply is controlled at about 60%, and its reliability is *. When the UPS power supply is overloaded or the inverter fails, the UPS power supply will be transferred to bypass mode. At this time, the UPS power supply does not have a backup function, and the power used by the load is supplied directly through the power system.

3. Try not to overload operation: try to run within the range of less than rated power, because overload power operation will not only affect the life of the load product, but also affect the life of the UPS power supply. In general, the load of online UPS power supply should be controlled at 70%-80%, while the load of backup UPS power supply should be controlled at 60%-70%. Note that overloading is not good either, though it is not as serious as overloading.

4. Do not use diesel generator: UPS power supply should not be powered by diesel generator, because its frequency is often sudden and unstable, affecting the normal operation of UPS power supply.

5. Boot and shutdown sequence when using UPS power supply: the correct turn-off sequence should be to turn on the UPS power supply to power it, and then turn on each load, so as to avoid the damage caused by the instantaneous current shock to the UPS when starting, and in the reverse order when shutting down, you should first turn off each load * turn off the UPS. When the power supply is interrupted by UPS, you should save your own data and data as soon as possible and then turn off the computer, otherwise using UPS power to work may cause excessive discharge of UPS, thus shortening the service life of UPS.

6. Charging skills of UPS power supply: after purchasing a new UPS power supply, plug the UPS power supply into the 220V city power grid and charge for at least 12 hours to ensure that the battery is fully charged. Otherwise, the actual available capacity of the battery will be much lower than the nominal capacity of the battery. If the UPS power supply is not used for a long time. It should be turned on for 24 hours every 2 to 3 months to fully charge and keep the UPS power supply in the working state of the inverter for 2 to 3 minutes to ensure the normal life of the battery. Once the UPS power supply is connected to the municipal power supply, it begins to charge the battery pack and continuously press the boot button for more than 1 second to start up, that is, turn on the inverter.

7. The UPS power supply should not be idle for a long time: the excessive discharge of the battery and the long-term open-circuit idle of the battery can increase the internal resistance of the battery and deteriorate the charging and discharging performance. For the UPS power supply which has been idle for a long time, let the UPS power supply charge the charging circuit in the machine for 12 hours before restarting, and for the backup UPS power supply, let the UPS power supply work in the inverter state for 2 minutes every other month to activate the battery. In addition, it is also necessary to strictly control that the charging current of the battery must not exceed the allowable charging current of the battery. Because the excessive charging current will shorten the service life of the battery.

8. Battery management skills Valve-regulated lead-acid batteries (VRLA) used in many UPS power sources have been called maintenance-free batteries from the beginning, which gives users a misunderstanding that such batteries are both durable and do not need maintenance at all. Under this misdirection, many users have not carried out maintenance and management since they installed the battery. When the battery in the UPS power supply encounters the following situations, the battery should be equalized: when the terminal voltage is lower than the specified standard voltage of the battery due to excessive discharge. The discharge calibration voltage is 10.5V for 12V small sealed lead-acid battery, 21V for 24V battery and 85V for 96V battery. The battery is not recharged in time after discharge; a battery that has been idle for a long time. Power outage, continuous floating charge of the battery, the discharge of nearly half the capacity of the battery. In view of this situation, Burke developed a battery automatic management software to effectively solve the problems caused by this problem.

① battery automatic management software, the city power normal 3-4 months to the battery charge and discharge management, discharge 20%, all charge and float automatically switch, fully activate lead acid molecules, greatly extend the battery life. Our factory makes a test that the battery discharges 20%, leaving 80% can cycle 1500-2500 times, and the battery 100% discharge 10.5V termination voltage can only cycle 300 times and the life is terminated.

During ② discharge, each battery pack is constantly detected, the voltage, current and temperature of each battery are monitored, and the battery voltage is adjusted according to the battery temperature to compensate.

③ battery discharge log to prevent battery failure diagnosis

The ④ charging current is 0.1 C, and the current can be set from 1 to 100A.

9. Do a good job of real-time monitoring: at present, intelligent UPS power supplies have operable performance characteristics such as communication with microcomputers and program control. Install the corresponding software on the microcomputer, connect the UPS power supply through the serial / parallel port, and run the program, you can use the microcomputer to communicate with the UPS power supply. Generally, it has the functions of information query, parameter setting, timing setting, automatic shutdown and alarm. Such as Winpower. Then through the special serial port control cable, the UPS power supply is connected to the computer, and then through the communication between RS232 and RS485, the UPS power supply has no municipal power input and shuts down automatically when the power supply is low. And it can simultaneously monitor multiple UPS power supplies connected to a serial port.

10. Reasonable selection of UPS power installation location a good installation location is very important, the place to put UPS must have good ventilation effect, away from water, combustible gases and corrosives, the ambient temperature is kept between 040 ℃, if disassembled and used at low temperature, there may be water droplet condensation phenomenon. Once the ambient temperature exceeds 25 degrees, every 10 degrees increase will shorten the battery life by half. At present, the batteries used in UPS power supply are generally maintenance-free sealed lead-acid batteries with a design life of 5 years.

The UPS power supply should not be placed on the side, and the air inlet and outlet should be kept unobstructed; when the load is connected to the UPS power supply, the load should be turned off first, then the wiring should be turned on, and then the load should be turned on one by one. It is strictly forbidden to connect inductive loads such as electric and photocopiers to the UPS power supply to avoid injury. When the UPS power supply is connected to a special socket with an overcurrent protection device, the power outlet used should be connected to the protective ground end; the UPS power output may be charged regardless of whether the input power cord is plugged into the municipal power outlet or not. In order to make the UPS power supply have no output, it is necessary to turn off the switch and then cancel the city power supply.

11. Precautions for correct installation of UPS power supply: you should also pay attention to safety when connecting the output power supply to the UPS. Because the output voltage and current of the UPS are relatively large, you should also pay attention to safety to prevent the occurrence of electric shock when connecting the output power supply. When replacing the battery, first turn off the UPS power supply and disconnect from the city power, use a screwdriver with an insulated handle, and do not put tools or other metal objects on the battery. When connecting the battery cable, it is normal to have small sparks at the joint, which will not cause harm to personal safety and UPS power supply. Do not connect the positive and negative poles of the battery short or reverse. When replacing the battery, it is not suitable to replace the battery individually, it is best to replace it as a whole. In addition, the combination of batteries with different amperes and different brands is prohibited.

twelve。 Regular maintenance: this is for the battery inside the UPS power supply, as the core components of the UPS power supply, we should protect it more carefully and maintain it regularly. If the local power is not cut off for a long time, we must regularly (three months) artificially interrupt the power supply and discharge the UPS power supply with load. Because the power has not been cut off for a long time, you always think that it is working normally, but in fact, once the power is off, it can only provide a short delay or no delay at all, because the UPS battery is in a floating charging state for a long time.

About "how long is the service life of UPS uninterruptible power supply for computer room cabinets?" this is the end of the introduction, more relevant content can be searched for previous articles, hope to help you answer questions, please support the website!

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