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Distribution Terminal Unit (DTU）

Model：
DTU

Overview：
The distribution automation terminal adopts advanced digital signal processing technology, high-speed industrial network communication technology, multi-CPU integration technology, an embedded industrial chipset, and a multi-task real-time operating system. It has strong stability, high reliability, good real-time performance, wide environmental compatibility, and powerful functions. It is suitable for detection and control needs in switchgear and ring main unit occasions in the distribution system. It is a new generation of microcomputer-based distribution automation remote terminal devices that integrates telemetry, telesignaling, remote control, protection, and communication functions.

Peculiarity

Powerful hardware and software platform: 4U standard chassis, popular modular front plug-and-play structure, circuit design versatility, interchangeability, maintainability, and convenient technology upgrades. A main control board can achieve an ‘a(chǎn)lgorithm’ + ‘communication’ function, the system architecture is simple and reliable.
The device adopts multi-level isolation and good shielding measures, from the box to the design of the printed board, and the selection of devices is fully considered a variety of anti-interference measures; the application of mature surface mount technology, the production process strictly followed the requirements of the IS09000: 2000 version of the procedure, so that the whole machine has excellent electromagnetic compatibility performance, and the site of the operation of the high-reliability, the group of the screen does not require any external anti-interference measures to simplify the design and operation and maintenance.
Strong three-remote resources: In only a 4U and 19-inch core unit, it supports up to 16 circuits: each circuit contains 3 remote measurements, 7 remote signals, and 2 remote controls.
Flexible and configurable functions: The device maintenance tool software provides three configuration functions: device channel configuration, fixed value parameter setting, and forwarding point table configuration. Through these three configuration functions, various engineering applications can be completed through configuration without modifying the program, greatly improving the reliability of the device.
Good maintainability: The device maintenance tool software is divided into four parts: common, engineering, production, and development, and provides comprehensive maintenance functions for personnel of different roles.
Perfect fault recording function: The device supports more than 64 sets of cyclic storage for recording waves. When fault recording, it records 4 cycles before the fault and 8 cycles after the fault, and the number of recording points is 128 points/cycle, and the recording waves of 2 circuits can be completed simultaneously. The starting conditions of the recording wave function include over-current faults, line voltage loss, zero-sequence voltage, sudden change of zero-sequence current, etc., and the starting condition parameters can be set remotely and locally. The recording wave accuracy and format meet the requirements of the national grid specification.
High-resolution humanized man-machine interface: 160 X 160 graphical full Chinese display interface, with a friendly man-machine interface and rich display content.

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