DTU Power Distribution Feeder For RMU , High Intensity Remote Interface Unit

DTU power distribution network feeder automation device with high intensity and low cost and easily installation

DTU power distribution network feeder automation device is used for terminal monitoring for RMU, small switching station,can connect with master station and realize the electrical signal gathering and control from multi-lines, fault detection, fault area location, isolation and non-fault area power restore to improve power supply reliability.

DTU power distribution network feeder automation device is with a hardware platform of 32 bits of microprocessor of high-performance, is with embedded real-time operation as a software development platform, also with characters of high stability and reliability , high performance,high intensity and low cost and easily installation.

DTU provides enough communication interface( 4 technical grade RS232 Serial ports, 2 of them can be equipped as RS485 ports,2 pieces of 10M Ethernet port,1 piece of USB port),main processor adapts technical grade 32 bits of high-performance processing chip, with specialized maintenance software, also can be remotely kept maintenance by specialized network, such as each CPU module is realized by bus. Main CPU module is as master station to control the whole communication process, the gathering CPU Module is as subsequent station, the communication rates is above 9600bps. Several device constitutes Ethernet bus through inner embedded industrial grade switch to make sure data processing and data exchange with sufficient bandwidth.

The TYHD-DTU distribution automation remote terminal (hereinafter referred to as the distribution terminal) is a new generation of power distribution terminal based on the latest generation of automated remote terminal technology.

Operation Condition:

1) Ambient temperature: -40°C ~ +70°C

Maximum daily temperature difference of 25 ° C

2) Relative humidity: 90% (25°C)

3) Earthquake resistance: Ground horizontal acceleration 0.3g

Ground vertical acceleration 0.15g

Simultaneously acting three sine waves

Safety factor 1.67

4) Maximum daily temperature difference: 25°C

5) Sunshine intensity (wind speed 0.5m/s): 0.1W/cm2

6) Maximum wind speed: 35m/s

7) Maximum ice thickness: 10mm

8) Installation location: indoor and outdoor opening and closing station, power distribution room, knife lock chamber, box change, switch

The power distribution terminal is divided into a core measurement and control unit area, an operation panel area and a wiring terminal area according to functions, and an internal operation panel area is built in the battery. If you need to install communication equipment such as fuse box and carrier, the power distribution terminal can be equipped with a communication box.

Functional description:

Each analog telemetry board can acquire 16 AC analog quantities. The AC analog quantity is isolated by the voltage/current transformer and converted into a voltage signal. After filtering and AD sampling, it is sent to the MCU for processing. Through the debugging software, the three remote sampling information can be flexibly configured and configured to realize the data calculation processing and monitoring function of the high-voltage side ring network cabinet or the low-voltage side distribution .

Distance/local rotary switch operation:

There is type test report for it, test items as following: