How to choose UPS power supply

Enterprise Data Center is now more and more important, how to ensure the stable operation of enterprise data Center has become a key factor, UPS is currently a lot of enterprises in the data Center standard accessories, then how to choose a suitable enterprise application of UPS power.

categories of UPS

In general, the UPS system is divided into three categories, for back-up, on-line interactive and online. Different vendors will provide different configurations of UPS, the customer according to their own goals, applications, and functional requirements, as well as their desire to differentiate their products, select the required ups. How to buy UPS uninterruptible power supply 1, the first to determine your data center equipment is the need for more powerful, Generally speaking, the power of PC or IPC is around 200W, the Mac is around 300W, the server is between 300W and 600W, the power value of other equipment can refer to the instruction manual of the device. Just buy as you want.

Second, you should understand the power rating of UPS there are two ways: apparent power (unit VA) and the actual output power (unit W), due to the existence of reactive energy so this difference, the conversion relationship between the two: apparent power * power factor = actual output power. So at the time of purchase to calculate good 3, UPS is usually divided into frequency machine and high frequency machine two kinds. The power frequency machine consists of thyristor SCR rectifier, IGBT inverter, bypass and frequency boost isolating transformer. Because of its rectifier and transformer operating frequency is 50Hz, the name is called Power frequency ups. Given these options, how do you choose your UPS configuration?

The enemy Baizhanbudai

When choosing UPS, you need your business needs, as well as knowing your budget and setting the capital and operating costs of the UPS system. You also need to understand the availability of ups, then the UPS system you choose should not be those that can tolerate only a few hours of downtime. Your UPS configuration should be selected to match your availability requirements, and your budget should be set based on the potential loss of data center downtime.

Cooling Infrastructure

Add a cold load to your facility according to the selected UPS system. For large data centers, even one or two percentage points of UPS efficiency can be converted into a lot of heat, and excess heat must be removed to protect the device. Does your existing infrastructure handle this load, or does your UPS need to be upgraded?

Space

UPS systems occupy valuable data center floor space, so ensure that the configuration you choose does not require additional space in your facility. Now the room can be said to be an inch of land one inch of gold, so the size of UPS is particularly important.

Redundancy

You have a temporary backup power system (UPS), so why not back up your backups? Redundancy is necessary if usability is a key consideration in the design. Additional backup UPS, can avoid single point of failure, thereby improving the reliability of the power system. A typical backup configuration is n+1 (for example, if you need six ups to run your data center, the n+1 design involves seven devices), others include 2N (one times the number of devices required), 2n+1, and so on. More redundancy can improve reliability or availability, but it also requires more equipment costs (higher capex), more ground space (depending on the configuration), and lower efficiency.

Design Complexity

Simple designs tend to be less prone to human error and independent failures, but they may also lack some of the features you would prefer to see in the UPS system. For example, a switch in an online interactive UPS system is a potential point of failure, and in a dual-conversion design, there is no such point of failure. In addition, complex designs may require more maintenance (or simply, higher maintenance costs) than simple designs.

Modular

    If you anticipate that your IT needs will grow, you should consider a modular approach. "Buy ahead" and buy more devices than you need now will cost you more capital spending, storage space and potential operating expenses. The modular approach allows you to add infrastructure when needed, avoiding the need to grow before the facility becomes waste.