描述
一、产品概述
型号:RXIDK 2H 1MRK000838-HA
系列:ABB RXIDK系列(早期高压保护继电器)
核心定位:
专为高压/中压配电系统(如35kV、66kV或110kV电网)设计,提供过电流、方向性、接地故障等保护功能。
适用于输电线路、母线分段、变压器等设备的保护与控制。
典型应用场景:
传统火力发电厂、水电站的出线保护。
工业大型企业的自备电厂及高压配电系统。
城市电网的老旧变电站改造项目。
二、硬件规格
1.保护功能
过电流保护:
速断保护:瞬时切除严重短路故障(动作时间≤30ms)。
定时限过流:按固定时间延时动作(如0.3s、0.5s、1s可调)。
反时限过流:支持IEC 60255标准曲线(非常反时限、极端反时限),适应不同负载特性。
方向性保护:
通过功率方向元件区分故障方向,适用于环网供电或多电源系统(如双电源切换场景)。
接地故障保护:
零序电流保护:检测单相接地故障(灵敏度可调至0.05A)。
零序电压保护:配合零序电流实现接地故障综合判断。
其他保护:
低电压/过电压保护:监测电压异常(如电压崩溃或过压,动作阈值可设)。
频率保护:检测系统频率偏离(如49Hz-51Hz范围外动作,防止频率崩溃)。
2.测量功能
电气参数监测:
三相电压、电流有效值(精度±0.5%)。
有功功率、无功功率、功率因数(精度±1%)。
频率(精度±0.02Hz)、电能计量(kWh/kVarh,适用于简单计费场景)。
故障记录:
可存储最近8次故障事件(包括故障类型、动作时间、故障电流/电压值)。
3.输入/输出(I/O)配置
数字输入(DI):
8路可编程DI,支持110V DC或220V DC(无源触点)。
典型用途:断路器位置、手车位置、保护动作信号、闭锁信号等。
数字输出(DO):
6路可编程DO,额定250V DC/125V AC,5A(继电器触点)。
典型用途:跳闸、合闸、报警、信号复归等。
模拟输入(AI):
2路可编程AI,支持0-5V或4-20mA信号(需外接传感器)。
典型用途:温度、压力等非电气量监测(如变压器油温监测)。
4.通信接口
串行接口:
1个RS-232/RS-485端口,支持Modbus RTU协议(速率9600bps至19200bps)。
用于连接本地监控终端或上位机系统。
扩展通信:
可通过选配模块支持IEC 60870-5-101/103协议(需确认具体型号配置)。
5.人机界面(HMI)
显示屏:
单色LCD显示屏(分辨率约128×64像素),显示保护动作信息、测量值及设置参数。
按键:
4个功能按键(上、下、确认、返回),用于菜单导航和参数修改。
三、软件功能
保护定值管理:
支持多套定值组(如正常运行定值、检修定值),可现场切换或远程修改。
事件记录与故障分析:
记录故障波形(需选配故障录波模块)或关键参数,辅助事故排查。
逻辑编程:
支持简单逻辑编程(如与、或、非逻辑),实现定制化保护策略。
四、物理特性
尺寸:
标准19英寸机架安装(宽度约144mm,高度约177mm,深度约220mm)。
重量:
约3.5kg(含外壳及接线端子)。
防护等级:
IP30(防尘,防止直径大于2.5mm的固体异物进入)。
工作温度:
-10℃至+55℃(工业级环境适应性)。
1.Product Overview
Model:RXIDK 2H 1MRK000838-HA
Series:ABB RXIDK series(early high-voltage protection relay)
Core Positioning:
Designed for high-voltage/medium-voltage distribution systems(such as 35kV,66kV or 110kV power grids),providing overcurrent,directionality,ground fault and other protection functions.
Applicable to the protection and control of transmission lines,busbar sections,transformers and other equipment.
Typical application scenarios:
Outgoing line protection of traditional thermal power plants and hydropower stations.
Self-provided power plants and high-voltage distribution systems of large industrial enterprises.
Old substation reconstruction projects of urban power grids.
2.Hardware specifications
1.Protection function
Overcurrent protection:
Quick-break protection:Instantaneous removal of severe short-circuit faults(action time≤30ms).
Time-limited overcurrent:Delayed action according to a fixed time(such as 0.3s,0.5s,1s adjustable).
Inverse time overcurrent:supports IEC 60255 standard curve(very inverse time,extremely inverse time),adapting to different load characteristics.
Directional protection:
The power direction element is used to distinguish the fault direction,which is suitable for ring network power supply or multi-power supply system(such as dual power supply switching scenario).
Ground fault protection:
Zero sequence current protection:detect single-phase ground fault(sensitivity can be adjusted to 0.05A).
Zero sequence voltage protection:cooperate with zero sequence current to realize comprehensive judgment of ground fault.
Other protections:
Low voltage/overvoltage protection:monitor voltage anomalies(such as voltage collapse or overvoltage,the action threshold can be set).
Frequency protection:detect system frequency deviation(such as action outside the range of 49Hz-51Hz to prevent frequency collapse).
2.Measurement function
Electrical parameter monitoring:
Three-phase voltage and current effective value(accuracy±0.5%).
Active power,reactive power,power factor(accuracy±1%).
Frequency(accuracy±0.02Hz),energy metering(kWh/kVarh,suitable for simple billing scenarios).
Fault record:
The latest 8 fault events can be stored(including fault type,action time,fault current/voltage value).
3.Input/output(I/O)configuration
Digital input(DI):
8 programmable DI,supporting 110V DC or 220V DC(passive contacts).
Typical uses:circuit breaker position,trolley position,protection action signal,lock signal,etc.
Digital output(DO):
6 programmable DO,rated 250V DC/125V AC,5A(relay contact).
Typical uses:tripping,closing,alarm,signal reset,etc.
Analog input(AI):
2 programmable AI,supporting 0-5V or 4-20mA signals(external sensor required).
Typical uses:non-electrical quantity monitoring such as temperature and pressure(such as transformer oil temperature monitoring).
4.Communication interface
Serial interface:
1 RS-232/RS-485 port,supporting Modbus RTU protocol(rate 9600bps to 19200bps).
Used to connect to local monitoring terminal or host computer system.
Extended communication:
IEC 60870-5-101/103 protocol can be supported through optional modules(specific model configuration needs to be confirmed).
5.Human-machine interface(HMI)
Display:
Monochrome LCD display(resolution of about 128×64 pixels),displaying protection action information,measurement values and setting parameters.
Keys:
4 function keys(up,down,confirm,return)for menu navigation and parameter modification.
III.Software functions
Protection setting management:
Support multiple sets of setting groups(such as normal operation setting,maintenance setting),which can be switched on-site or modified remotely.
Event recording and fault analysis:
Record fault waveform(optional fault recording module required)or key parameters to assist in accident investigation.
Logic programming:
Supports simple logic programming(such as AND,OR,NOT logic)to achieve customized protection strategies.
4.Physical characteristics
Dimensions:
Standard 19-inch rack installation(width about 144mm,height about 177mm,depth about 220mm).
Weight:
About 3.5kg(including housing and wiring terminals).
Protection level:
IP30(dustproof,prevent solid foreign objects with a diameter greater than 2.5mm from entering).
Operating temperature:
-10℃to+55℃(industrial grade environmental adaptability).
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