Due to the fast-increasing requirement for information management in all kinds of industries, people are building more and more large data centers all around the world. Usually, the large data center is bigger than 500 m2 and the number of racks inside is a large number. The requirements for a power system include high power, high reliability, ease of upgrading and etc.

1. High-power UPS system

2. Power distribution unit

3. Battery banks

4. Telecom DC power system

5. Monitoring system

Figure 1 shows a sample diagram of the large data center. The main infrastructure includes UPS, PDUs, air conditioners, DC power, lightning protection, monitoring system and etc. Due to the high-reliability requirement, large data centers are usually built according to Tier 4.

Figure 1: Diagram of a larger data center

Due to the application of UPS and the redundant design of power distribution systems, the power reliability of modern large data centers is higher than ever. As loads of data centers are growing so fast that not only reliability but other issues we have to face. Energy saving, flexibility for upgrading, high power density, and intelligence, all of these aspects are becoming more and more important for modern data centers.

Figure Figure 2:  large data center

Figure 2 shows the large data center. The power source from the utility and the generator is controlled by the ATS (automatic transfer switch) and connected to the central PDU (Power distribution unit). ATS will choose one of the sources to feed the connected equipment according to utility conditions and customer settings. UPS, telecom DC power supply, TVSS, and other equipment are connected to the central PDU. We provide the leading technology of the LBS (Load bus synchronization) system to ensure the reliability of the system. The LBS system is considered to be the best configuration for the data center power solution. In the case of double power input loads, two UPS systems will feed with the double power source. STS is needed for the single power input loads to one of the sources automatically.

The modular UPS is very suitable for the requirements of the modern large data center. Besides the high reliability, modular UPS has the following advantages:

1. Modular design, decrease the initial investment of the customer.

2. Modular design, easy and flexible for system upgrading.

3. Very high system efficiency, and energy-saving technology.

4. Very high power density, saves precious space in the data center.