- Protection, Automation & Control
- Protection & Control
- Digital Substation
- Energy Management
- Power Stability Control
- Software Kit
Transmission Line Protection
PCS-9721A/B Distribution Terminal Unit(DTU)
The distribution terminal unit is the general designation for various devices, such as a feeder terminal unit and a transformer terminal unit that are being used in the distribution feeder circuits.
PCS-9721A/B is a distribution terminal unit for switching stations, distribution rooms, and etc. With the many years of experience in such fields as relay protection devices, monitoring and control, as well as distribution automation, these products are made reliable and more advanced in technology.
The Distribution Automation System is designed with a hierarchy of architecture, containing two layers: The first layer, the master station, is mainly used for the operation of the low and middle voltage lines, devices, as well as the users of the whole distribution network and controlling power distribution. The second layer, the distribution terminal, is for conducting data acquisition, monitoring its condition, and fault detection. It also provides treatment to the middle and low voltage lines, station switch, power distribution transformer and capacitor of the distribution network.