描述
GE D20C TERMINATION产品详情
GE D20C TERMINATION是通用电气（GE）公司推出的一款高性能终端匹配器，属于D20系列工业通信模块，专为电力系统自动化、轨道交通、石油化工等严苛工业环境设计。该产品主要用于解决信号传输中的反射问题，通过精确匹配传输线特性阻抗，确保数字信号（如GOOSE、SV、MMS）或模拟信号（如4-20mA电流环）的稳定传输，广泛应用于变电站自动化、分布式控制系统（DCS）、过程自动化等场景。
一、产品定位与核心功能
1.目标应用场景
电力系统自动化：
用于智能变电站中合并单元（MU）、智能终端（IT）与保护测控装置间的光纤以太网通信，消除长距离光纤传输（如数百米至数千米）的信号反射，确保GOOSE报文（快速跳闸信号）和SV采样值（电流电压数据）的实时性。
轨道交通信号系统：
在列车控制网络（如TCN、ETBN）中，匹配列车总线或车辆总线的特性阻抗，防止信号反射导致的通信中断，保障列车运行安全。
石油化工过程控制：
用于分布式控制系统（DCS）中现场仪表（如压力变送器、温度传感器）与控制器间的4-20mA模拟信号传输，消除长电缆（如1km以上）的信号畸变，提高测量精度。
2.核心功能
终端阻抗匹配：
提供精确的终端电阻（如75Ω、120Ω、150Ω可选），与传输线特性阻抗完全匹配，消除信号反射，避免信号过冲、振铃或衰减。
多协议支持：
兼容IEC 61850（GOOSE/SV）、Modbus TCP、Profibus-DP、CANopen等工业通信协议，适用于混合协议网络。
宽温工作能力：
工作温度范围-40℃至+85℃，适应户外变电站（极寒/酷暑）或井下（高温高湿）等极端环境。
高可靠性设计：
采用无源器件（纯电阻网络），无电子元件老化问题，MTBF（平均无故障时间）>50年，满足电力系统“免维护”需求。
GE D20C TERMINATION Product Details
The GE D20C TERMINATION is a high-performance terminal matcher from General Electric(GE).It belongs to the D20 series of industrial communication modules and is designed for harsh industrial environments such as power system automation,rail transit,and the petrochemical industry.This product primarily addresses reflection issues in signal transmission.By precisely matching the characteristic impedance of transmission lines,it ensures stable transmission of digital signals(such as GOOSE,SV,and MMS)or analog signals(such as 4-20mA current loops).It is widely used in substation automation,distributed control systems(DCS),and process automation.
I.Product Positioning and Core Functions
1.Target Application Scenarios
Power System Automation:
It is used for optical Ethernet communication between merging units(MUs),intelligent terminals(ITs),and protection and measurement and control devices in smart substations.It eliminates signal reflections over long fiber optic transmission distances(e.g.,hundreds to thousands of meters)and ensures the real-time delivery of GOOSE messages(fast trip signals)and SV sampling values(current and voltage data).Rail Transit Signaling Systems:
In train control networks(such as TCN and ETBN),this device matches the characteristic impedance of the train bus or vehicle bus,preventing communication interruptions caused by signal reflections and ensuring safe train operation.
Petrochemical Process Control:
This device is used for 4-20mA analog signal transmission between field instruments(such as pressure transmitters and temperature sensors)and controllers in distributed control systems(DCSs),eliminating signal distortion over long cables(e.g.,over 1km)and improving measurement accuracy.
2.Core Functions
Terminal Impedance Matching:
This device provides precise terminal resistance(optional:75Ω,120Ω,or 150Ω)to perfectly match the characteristic impedance of the transmission line,eliminating signal reflections and preventing signal overshoot,ringing,or attenuation.
Multi-Protocol Support:
Compatible with industrial communication protocols such as IEC 61850(GOOSE/SV),Modbus TCP,Profibus-DP,and CANopen,making it suitable for mixed-protocol networks.Wide Operating Temperature Range:
The operating temperature range is-40°C to+85°C,making it suitable for extreme environments such as outdoor substations(extremely cold/hot)and underground mines(high temperature and humidity).
High Reliability Design:
The use of passive components(pure resistor network)eliminates the risk of electronic component aging and offers an MTBF(mean time between failures)of over 50 years,meeting the maintenance-free requirements of power systems.
ABB Model: GBU72 3BHE055094R0002 Model: 3BHE055094R0002 GBU72 Model: GBU72 Model: 3BHE055094R0002 Model: 3BHE031197R0001 Model: 3BHB030310R0001 Model: 73BHE055094R0002 GBU72 Model: 73BHE055094R0002 Model: GBU72 Model: ABB PCS6000 PRODUCT FAMLIY ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101
