More and more precision equipment is applied in modern factories, and the manufacturing process relies more and more on IT technologies, all of these bring the requirement of power supply reliability. The load types in modern factories are complex and different loads may require different power conditions. It’s important to choose a suitable power supply for critical loads to ensure the manufacturing process. Meanwhile, due to the factory field condition, the power supply protection degree and system function are also important.

1. UPS system

2. Power distribution unit

3. Battery banks

4. Monitoring system

According to the load type, the critical equipment in modern factories can be divided into the following: 

1. Precision industrial equipment, such as semiconductor packaging machines, SMT machines, etc.

2. Process management system, such as DCS system, remote monitoring and control system, etc.

3. Factory IT systems, such as ERP, PLM, etc.

Figure 1 shows a modern factory.

Figure 1: Solution for the modern factory

The power source from the utility and the generator is controlled by the ATS (automatic transfer switch) and connected to the PDU (Power distribution unit). ATS will choose one of the sources to feed the connected equipment according to utility conditions and custom settings. We recommend the customer separate the PDU for industrial loads and the factory IT system. Generally speaking, UPS paralleling system is necessary for precision industrial load. In case of influence, the process management system can be separated by using an independent UPS system.

According to different conditions, the factory IT system can be powered by the same UPS system as a process management system or an independent UPS system. Similar to data centers, there are many growing loads in industrial applications, so the flexibility of the power supply system is becoming more and more important.