DAT Series Distribution Automatic Terminal

    Introduction

    DAT series are based on the distributed modular design method and synthetical analysis on the information acquisition and control requirements of the distribution network. The terminals adapt measurement and control circuits of high reliability, high speed antigumming and industrial field bus network technology to carry out real-time supervision over switching stations, loop network cabinets, pole switches, distribution transformers, capacitors and other primary devices in 10kV power line. This equipment features easy installation and wiring, simple debugging, expansive network, high reliability and measuring accuracy.

    DAT series distribution network terminals are suitable for real-time monitoring over switching stations, loop network cabinets, pole switches, distribution transformers, capacitors and other primary devices in 10kV power line of distribution automation system. It can also be used for real-time monitoring of distribution automation in the fields such as industry districts, minings, ports, metros and electric railways, etc.

    Product Category
  • DAT-1S distribution automation terminal
    Mainly used for supervision over out/in lines or single line of switching station and distribution substations with main functions of real-time monitoring, fault identification, fault isolation and power restoration. Featuring small size and simple installation.
  • DAT-1P distribution automation pole terminal.
    Installed on overhead wire poles mainly for monitoring pole switches.
  • DAT-1L loop network cabinet/ large user automation terminal
    It is a kind of monitoring terminals for ring network cabinet and large users with a maximum measuring capacity of 8 lines.
  • DAT-1LA centralized distribution terminal
    Suitable for distribution substations and switching station with a remote measuring capacity of more than 8 lines. The centralized organizing method is commonly used.
  • DAT-1T distribution transformer monitor terminal
    Mainly used for monitoring distribution transformers.
  • DAT-1C communication management unit
    Mainly used for protocol process.
    Functions
  • Remote supervisory: event resolution 4ms
  • Telemetering: measure the analog of the current, voltage, active power, reactive power, power factor, and frequency, etc .
  • Remote control: capable of receiving remote instructions to trip or close and cooperate with the main station to accomplish fault isolation, line reclose, network reconstruction and load transfer, etc.
  • Harmonic wave analysis: with DSP technology, precise harmonic wave analysis can be made on each analog input value of power network (1-15 times).
  • Statistics: switches statistic of on-line monitoring, and quality statistics of electric energy (time of voltage loss, time of over/under voltage, frequency deviation, etc.) and accumulation of electric energy of pulse.
  • Time calibration: capable of receiving and responding time checking instructions from and to the main stations to keep accordance with system clock, so that make event logs comparable.
  • Sequence of events (SOE): time and sequence of state value changes.
  • Setting modification or recalling remotely or locally: FTU (Feeder Terminal Unit)/DTU(Distributed Terminal Unit) can receive designated setting from the control center or local display equipment, as well as recall the current setting of FTU at any time. The maintenance functions include parameter setting, working state display, and system diagnosis.
  • Local operations: providing local trip/close interface to operate in case of communication fault.
  • Communication: connecting main stations and local devices with CANBUS or standard RS232/RS485/RS422 .
  • Acquisition of electric energy: get active and reactive electric energy by accumulating the active power and the reactive power acquired.
  • Self-diagnosis and self-recovery: capable of operation self-test and giving alarm in case of fault.
  • Fault identification: capable of calculating fault current according to current and setting acquired, and initiatively report fault and features to the main station for fault isolation.
    Features
  • AC, DC and battery is suitable for various power supplies of distribution networks, assuring high reliability of power supply.
  • Unified hardware platform, based on dual-CPU and high speed DSP, FFT acquisition arithmetic, assuring accuracy of data acquisition.
  • Unique remote control design and control modes, assuring accurate and reliable execution of remote control.
  • Simple maintenance, supporting remote on-line maintenance .
  • Ultra large-scale EPLD technology, lower power consumption and improved reliability.
  • Strong anti-interference against common mode, different mode, radiant electromagnetic field and electrostatic interferences, etc.
  • Supporting various communication modes, such as wired, wireless, optical fiber .
  • Abundant communication protocols, such as IEC600870-5-101, DNP3.0,MODBUS, CAN2.0B and IEC1334. It can also be expanded if necessary.

    Engineering Application

    These products have already been used in the distributed automation systems in Chongqing, Suzhou,SangHai,NanJing, Luoyang, Dalian and Nanchang,etc.