GE Multilin 489-P5-LO-A20-E 模拟输出继电器

Description

低电压4-20 mA模拟输出继电器489-P5-LO-A20-E技术参数中文介绍

一、产品概述
489-P5-LO-A20-E是一款由GE Multilin生产的发电机管理继电器，属于Multilin 489系列。该继电器设计用于发电机系统的保护与控制，具备高可靠性、长寿命及全面的保护功能，适用于工业、船舶、化工等领域的发电机管理场景。

二、489-P5-LO-A20-E 核心参数

1. 控制电源输入
   • 电压范围：
     • DC：20-60 VDC
     • AC：20-48 VAC（频率48-62 Hz）
   • 兼容性：支持直流与交流双模式供电，适应不同电源环境。
2. 电流互感器（CT）输入
   • 次级电流：5 A（相位CT次级）
   • 用途：通过监测发电机电流实现过载、短路等保护功能。
3. 模拟输出
   • 输出范围：4-20 mA
   • 功能：可连接至PLC、SCADA等系统，用于远程监控发电机状态（如电流、电压等）。
4. 显示与操作界面
   • 显示屏：40字符LCD显示屏，支持实时数据显示、诊断信息及设置点查看。
   • 操作面板：
     • 状态LED指示灯
     • 数字键盘及输入按钮
     • 程序端口接口
     • 控制键与编程键
   • 安全设计：底部配备可铅封的抽出式手柄，防止未经授权的访问。

三、489-P5-LO-A20-E 通信与接口

1. 通信协议：
   • 支持Modbus RTU、DNP 3.0协议，通信速率最高达19200 bps，兼容主流工业通信标准。
2. 输入/输出接口：
   • RTD输入：12个，用于温度监测（如轴承温度）。
   • 输出继电器：6个，实现控制逻辑输出。
   • RS485通信端口：2个，支持多设备级联。
   • VT输入：4个，用于电压互感器信号接入。
   • 模拟输入/输出：4个隔离的4-20 mA通道，支持双向信号传输。
   • 数字输入：7个可分配通道，适配开关量信号。

四、电气参数

1. 运行频率：25、50或60 Hz，兼容全球电网标准。
2. 参数范围：
   • 频率：0.00-90.00 Hz
   • 零线电压：0-25000 V
   • 功率因数：0.01-1.00（超前/滞后）
   • 无功功率（Mvar）：额定电压的-2.00至2.00倍

五、489-P5-LO-A20-E 保护功能

1. 核心保护：
   • 过载保护、短路保护、欠压保护、过压保护
   • 相位不平衡、反相序、逆功率保护
2. 附加功能：
   • 振动监测（可选）
   • 轴承温度保护（通过RTD输入）

六、环境适应性

1. 防护等级：IP65，防尘防水，适用于恶劣工业环境。
2. 结构：紧凑设计，尺寸为21.6 cm（长）× 22.4 cm（宽）× 25.2 cm（高），重量约10 kg。
3. 安装方式：控制室安装，支持快速维护与更换。

七、软件与可编程性

1. Enervista 489PC软件：支持继电器参数配置、故障记录分析及固件升级。
2. 远程编程：通过通信接口实现远程参数调整，降低运维成本。

八、应用场景

• 发电机组保护：中小型发电机组的过载、短路、接地故障保护。
• 工业自动化：与DCS/SCADA系统集成，实现发电机状态实时监控。
• 能源管理：优化发电机运行效率，延长设备寿命。

九、优势总结

• 高可靠性：采用工业级元器件，适应宽温、高湿、强电磁干扰环境。
• 灵活性：支持多种电源输入与通信协议，适配不同系统架构。
• 易用性：直观的显示屏与操作面板，简化调试与维护流程。
• 

Introduction to Technical Parameters of Low Voltage 4-20 mA Analog Output Relay 489-P5-LO-A20-E in Chinese

1、 Product Overview
489-P5-LO-A20-E is a generator management relay produced by GE Multilin, belonging to the Multilin 489 series. This relay is designed for the protection and control of generator systems, with high reliability, long lifespan, and comprehensive protection functions, suitable for generator management scenarios in industrial, marine, chemical, and other fields.

2、 Core parameters of 489-P5-LO-A20-E

Control power input
Voltage range:
DC：20-60 VDC
AC: 20-48 VAC (frequency 48-62 Hz)
Compatibility: Supports dual mode power supply of DC and AC, adapting to different power environments.
Current Transformer (CT) Input
Secondary current: 5 A (phase CT secondary)
Purpose: To achieve overload, short circuit and other protection functions by monitoring the generator current.
Analog Output
Output range: 4-20 mA
Function: Can be connected to PLC, SCADA and other systems for remote monitoring of generator status (such as current, voltage, etc.).
Display and operation interface
Display screen: 40 character LCD display screen, supporting real-time data display, diagnostic information, and setpoint viewing.
Operation panel:
Status LED indicator light
Numerical keypad and input buttons
Program port interface
Control keys and programming keys
Security design: The bottom is equipped with a lead sealable pull-out handle to prevent unauthorized access.

3、 489-P5-LO-A20-E Communication and Interface

Communication protocol:
Supports Modbus RTU and DNP 3.0 protocols, with a communication speed of up to 19200 bps, compatible with mainstream industrial communication standards.
Input/output interface:
RTD input: 12, used for temperature monitoring (such as bearing temperature).
Output relays: 6, to achieve control logic output.
RS485 communication ports: 2, supporting cascading of multiple devices.
VT input: 4, used for voltage transformer signal access.
Analog input/output: 4 isolated 4-20 mA channels, supporting bidirectional signal transmission.
Digital input: 7 assignable channels, compatible with switch signals.

4、 Electrical parameters

Operating frequency: 25, 50, or 60 Hz, compatible with global grid standards.
Parameter Range:
Frequency: 0.00-90.00 Hz
Zero line voltage: 0-25000 V
Power factor: 0.01-1.00 (lead/lag)
Reactive power (Mvar): -2.00 to 2.00 times the rated voltage

5、 489-P5-LO-A20-E protection function

Core protection:
Overload protection, short circuit protection, undervoltage protection, overvoltage protection
Phase imbalance, reverse phase sequence, reverse power protection
Additional features:
Vibration monitoring (optional)
Bearing temperature protection (input through RTD)

6、 Environmental adaptability

Protection level: IP65, dustproof and waterproof, suitable for harsh industrial environments.
Structure: Compact design, with dimensions of 21.6 cm (length) x 22.4 cm (width) x 25.2 cm (height), and a weight of approximately 10 kg.
Installation method: Control room installation, supporting quick maintenance and replacement.

7、 Software and programmability

Enervista 489PC software: supports relay parameter configuration, fault record analysis, and firmware upgrade.
Remote programming: Implementing remote parameter adjustment through communication interfaces to reduce operation and maintenance costs.

8、 Application scenarios

Generator set protection: Overload, short circuit, and grounding fault protection for small and medium-sized generator sets.
Industrial automation: Integrated with DCS/SCADA system to achieve real-time monitoring of generator status.
Energy management: Optimize the operational efficiency of generators and extend equipment lifespan.

9、 Summary of Advantages

High reliability: Industrial grade components are used to adapt to environments with wide temperature, high humidity, and strong electromagnetic interference.
Flexibility: Supports multiple power inputs and communication protocols, adapting to different system architectures.
Usability: Intuitive display screen and operation panel, simplifying debugging and maintenance processes.