GE Multilin 469-P5-LO-A20-E

Description

GE Multilin 469-P5-LO-A20-E电机保护继电器技术参数中文介绍

GE Multilin 469-P5-LO-A20-E是一款专为中大型电机设计的电机保护继电器，配备增强型前面板，提供全面的电机保护与管理功能。以下是其核心技术参数的中文介绍：

1.469-P5-LO-A20-E 电源输入

• 直流电源（DC）：24-60 VDC
• 交流电源（AC）：20-48 VAC
• 频率范围：48-62 Hz
• 电源类型：支持宽范围直流或交流电源输入，适应不同工业供电环境。

2. 469-P5-LO-A20-E保护功能

• 过载保护：提供基于热模型的过载保护，支持多种过载曲线设置，适应不同负载特性。
• 缺相保护：检测三相电源缺相故障，防止电机因单相运行而损坏。
• 不平衡保护：监测电流不平衡度，保护电机免受因相不平衡导致的过热或振动。
• 接地故障保护：检测电机绕组接地故障，支持高阻抗接地系统。
• 堵转保护：在电机启动或运行过程中检测堵转故障，防止电机因过载而损坏。
• 欠载保护：适用于泵类等负载，防止因空载或欠载导致的电机损坏。
• 电压保护：提供过压/欠压保护，防止电压异常对电机造成损害。

3. 469-P5-LO-A20-E前面板设计

• 增强型前面板：
  • 大尺寸LCD显示屏：40字符液晶显示屏，支持本地查看诊断消息、跳闸记录和实时数据。
  • LED指示灯：多排LED指示灯，直观显示电机状态、输出状态和故障类型。
  • 数字键盘与编程键：提供复位、退出、菜单等操作按钮，支持本地参数配置和编程。
  • 可编程RS-232接口：波特率9600，可编程至19200，支持与上位机通信。
  • 抽出式手柄：可密封设计，防止未经授权的拆卸，提升设备安全性。

4. 输入/输出配置

• 模拟量输入：支持电阻温度检测器（RTD）等外部传感器输入，用于电机温度监测。
• 数字量输入：提供多个可编程数字输入，支持外部信号触发保护动作。
• 继电器输出：多组可编程继电器输出，支持跳闸、报警、控制信号输出。
• 模拟量输出：4-20 mA模拟量输出，支持电机运行状态监控。

5. 通信功能

• 通信接口：提供RS-485、RS-232等标准通信接口，支持Modbus RTU协议。
• 网络扩展：支持扩展以太网通信模块（需选配），实现Modbus TCP/IP或Ethernet/IP通信。
• 数据记录与传输：支持事件记录和故障录波，可通过通信接口上传至上位机系统。

6. 环境适应性

• 工作温度：-20°C至+60°C
• 存储温度：-40°C至+85°C
• 湿度：95%相对湿度（非冷凝）
• 防护等级：IP20（标准），适用于室内安装。
• 电磁兼容性（EMC）：符合IEC 61850、IEC 61000等标准，抗干扰能力强。

7. 认证与标准

• 国际认证：UL、CSA、CE认证
• 行业标准：符合IEC 60255、IEEE C37.90等国际标准
• 合规性：满足欧盟RoHS指令要求

8. 应用场景

• 工业电机保护：适用于风机、泵、压缩机、起重机等中大型电机。
• 电力系统：用于发电厂、变电站等场合的电机保护。
• 基础设施：适用于地铁、机场、水处理等领域的电机驱动系统。

9. 其他特性

• 固件升级：支持现场固件升级，功能可扩展。
• 自诊断功能：实时监测继电器硬件状态，故障时及时报警。
• 安全功能：支持密码保护和权限管理，防止未经授权的参数修改。

总结

GE Multilin 469-P5-LO-A20-E电机保护继电器凭借其增强的前面板设计、全面的保护功能、灵活的通信接口和强大的环境适应性，成为中大型电机保护领域的理想选择。其直观的操作界面和可靠的硬件设计，可显著提升电机系统的安全性和运行效率。

Introduction to Technical Parameters of GE Multilin 469-P5-LO-A20-E Motor Protection Relay in Chinese

GE Multilin 469-P5-LO-A20-E is a motor protection relay designed specifically for medium to large motors, equipped with an enhanced front panel that provides comprehensive motor protection and management functions. The following is a Chinese introduction to its core technical parameters:

1. Power input
DC power supply: 24-60 VDC
AC power supply: 20-48 VAC
Frequency range: 48-62 Hz
Power type: Supports wide range DC or AC power input, suitable for different industrial power supply environments.
2. Protection function
Overload protection: Provides overload protection based on thermal models, supports multiple overload curve settings, and adapts to different load characteristics.
Phase loss protection: detects three-phase power supply phase loss faults to prevent motor damage due to single-phase operation.
Unbalance protection: Monitor the degree of current imbalance and protect the motor from overheating or vibration caused by phase imbalance.
Ground fault protection: detects motor winding ground faults and supports high impedance grounding systems.
Locked rotor protection: Detect locked rotor faults during motor start-up or operation to prevent motor damage due to overload.
Underload protection: Suitable for pumps and other loads to prevent motor damage caused by no-load or underload.
Voltage protection: Provides overvoltage/undervoltage protection to prevent damage to the motor caused by abnormal voltage.
3. Front panel design
Enhanced front panel:
Large LCD display screen: 40 character LCD display screen, supporting local viewing of diagnostic messages, trip records, and real-time data.
LED indicator lights: Multiple rows of LED indicator lights, visually displaying motor status, output status, and fault types.
Numerical keyboard and programming keys: provide reset, exit, menu and other operation buttons, support local parameter configuration and programming.
Programmable RS-232 interface: baud rate 9600, programmable up to 19200, supports communication with upper computer.
Pull out handle: sealable design to prevent unauthorized disassembly and enhance equipment safety.
4. Input/output configuration
Analog input: Supports external sensor inputs such as resistance temperature detectors (RTDs) for motor temperature monitoring.
Digital input: Provides multiple programmable digital inputs and supports external signal triggered protection actions.
Relay output: Multiple sets of programmable relay outputs, supporting tripping, alarm, and control signal output.
Analog output: 4-20 mA analog output, supporting motor operation status monitoring.
5. Communication function
Communication interface: Provides standard communication interfaces such as RS-485 and RS-232, and supports Modbus RTU protocol.
Network Expansion: Supports the expansion of Ethernet communication modules (optional) to achieve Modbus TCP/IP or Ethernet/IP communication.
Data recording and transmission: supports event recording and fault recording, and can be uploaded to the upper computer system through a communication interface.
6. Environmental adaptability
Working temperature: -20 ° C to+60 ° C
Storage temperature: -40 ° C to+85 ° C
Humidity: 95% relative humidity (non condensing)
Protection level: IP20 (standard), suitable for indoor installation.
Electromagnetic compatibility (EMC): Compliant with standards such as IEC 61850 and IEC 61000, with strong anti-interference ability.
7. Certification and Standards
International certifications: UL, CSA, CE certification
Industry standards: Complies with international standards such as IEC 60255 and IEEE C37.90
Compliance: Meets the requirements of the EU RoHS directive
8. Application scenarios
Industrial motor protection: suitable for medium and large motors such as fans, pumps, compressors, cranes, etc.
Power system: used for motor protection in power plants, substations, and other occasions.
Infrastructure: Suitable for motor drive systems in areas such as subways, airports, and water treatment.
9. Other characteristics
Firmware Upgrade: Supports on-site firmware upgrade and expandable functionality.
Self diagnostic function: Real time monitoring of relay hardware status and timely alarm in case of faults.
Security feature: Supports password protection and permission management to prevent unauthorized parameter modification.
summarize
The GE Multilin 469-P5-LO-A20-E motor protection relay, with its enhanced front panel design, comprehensive protection functions, flexible communication interface, and strong environmental adaptability, has become an ideal choice for the protection of medium and large motors. Its intuitive operating interface and reliable hardware design can significantly improve the safety and operational efficiency of the motor system.