1. first confirm on the type of UPS

        In terms of China's current situation of the power, UPS is a very essential power protection equipment. Demand of different types of UPS users is also different, such as: key equipment requires to use high-performance, on-line models of high security, on-line UPS is fully functional, and can resist the power line from a variety of violations, such as high-pressure , spikes, surges, noise interference, etc., the output of pure power can always protect your load.

        In addition to using on-line, Internet users can also consider online interactive UPS.

Personal and home users may opt into back-up type model. The backup-type UPS is cheap, thin, light, and is the ideal partner for personal computers. The time is less than 10 milliseconds for the conversion from power supplr to battery power, while the PC machine has stored energy of the capacitor, tolerable outage of less than 20 ms conversion time, hence it will not affect the normal use of PC .

2. identify the UPS power (VA) Value

        Lists out all the equipment needed to protect, do not forget display, host, external hard disk drives. Each device voltage and current data can be found on its back, while the two can be multiplied to obtain (VA) volt-ampere values. Some devices use watts to multiply 1.4 can obtained the approximate number of volt-ampere.

        The value of all components of the VA will be concluded to summary; the aggregate value plus 30% of the reserve to expand the capacity can prepare for the use of system upgrade.

3. Identify standby time for the load equipment

        When out of power, the device only needs to complete archiving, shut down operations, the proposed selection is standard UPS;

        When out of power, the load equipment need to conduct long-term operation, the proposed selection is long-acting UPS.

4. additional function selection

        In order to improve system reliability, it is recommended to adopt hot backup UPS system, and consider hot backup in series or parallel hot backup. Small-capacity UPS (1 ~ 2KVA) can also use redundant switches. Can choose to use remote monitoring panel to achieve the remote monitoring and control of UPS's work; can choose to use monitoring software to achieve between the computer and intelligent UPS management; can choose to use the network adapter to achieve a network UPS management (based on SNMP); In some rainy and thunder-frequent region, it can equipped with lightning protection devices. It should also consider the possibility of network use and protection of the peripherals, as more and more complete peripherals (such as printers, scanners), which is part of the equipment and also need protection. It must be considered that whether they have cable surge protection and data-line surge protection, and whether in the unmanned systems can be able to automatic shutdown. In addition, because multi-user put commercial desktop of UPS by their side, so the product design, manufacturing process need also to be considered.

5. choose a good brand UPS supplier

        Product quality provided by suppliers must be guaranteed; and after-sales service should be thoughtful and timely. A UPS service life should be at least three years, so the best option is to choose a brand that can provide 3-year warranty. In addition, network coverage of sales and maintenance can guarantee the timely maintenance of the product.