描述
一、核心功能与定位
类型：馈线管理继电器，属于GE MULTILIN 650系列，专为电力系统馈线保护与控制设计，支持快速故障检测、保护动作及自动化控制。
核心功能：
过流保护：提供瞬时和延时过流保护，支持相电流、中性点电流、接地/灵敏接地电流的监测，支持多种时间曲线（如IEEE/ANSI、IECA/B/C、用户可编程曲线）。
方向元件：可编程方向功能，适用于相电流、中性点电流及接地方向检测，支持零序电压、接地灵敏电流或双重极化条件。
电压保护：监测相/辅助过电压、欠电压、中性点及负序过电压，确保系统电压稳定性。
频率保护：三个独立频率单元，支持欠频/过频保护，适用于甩负荷场景。
断路器失灵保护：检测断路器跳闸失败时触发再跳闸，支持两级电流与延时配置，具备拉弧电流检测功能。
自动重合闸：支持4次独立时间设置的合闸操作，可动态调整保护参数。
同期检查：算法优化断路器合闸条件，监测电压幅值、相角及频率差。
二、技术参数
硬件规格
结构形式：19英寸机架安装，支持24-48V直流供电。
通信接口：冗余RS485、以太网（10/100BASE-TX），支持Modbus、Profibus等协议。
输入/输出：16-32个数字输入、8-16个数字输出，支持可编程模拟输入。
存储容量：3组独立保护定值组，支持本地或远程编辑。
组态与扩展
组态工具：兼容EnerVisto软件，支持联锁逻辑与开关顺序配置。
人机界面：图形化HMI提供实时监视、测量及报警功能。
环境适应性
防护等级：未明确标注，但符合工业级设计标准。
工作温度：推测支持-20°C至70°C（参考同类产品）。
三、核心应用场景
电力系统保护
变电站馈线保护、断路器失灵跳闸、同期并网控制。
工业自动化
工厂配电网络监测、电机过载保护、故障隔离。
能源与交通
火力发电厂机组保护、轨道交通供电系统监控。
1.Core functions and positioning
Type:Feeder management relay,belongs to the GE MULTILIN 650 series,specially designed for power system feeder protection and control,supporting rapid fault detection,protection action and automated control.
Core functions:
Overcurrent protection:Provides instantaneous and delayed overcurrent protection,supports monitoring of phase current,neutral point current,ground/sensitive ground current,and supports a variety of time curves(such as IEEE/ANSI,IECA/B/C,user programmable curves).
Direction element:Programmable direction function,suitable for phase current,neutral point current and ground direction detection,supporting zero-sequence voltage,ground sensitive current or double polarization conditions.
Voltage protection:Monitor phase/auxiliary overvoltage,undervoltage,neutral point and negative sequence overvoltage to ensure system voltage stability.
Frequency protection:Three independent frequency units,support underfrequency/overfrequency protection,suitable for load-shelving scenarios.
Circuit breaker failure protection:Triggers trigger and trip again when the circuit breaker trip fails.It supports two-stage current and delay configurations and has arc pull current detection function.
Automatic reclosing:supports 4 independent time closing operations,and can dynamically adjust protection parameters.
Concurrent inspection:The algorithm optimizes the circuit breaker closing conditions and monitors the voltage amplitude,phase angle and frequency difference.
2.Technical parameters
Hardware specifications
Structural form:19-inch rack mounted,supports 24-48V DC power supply.
Communication interface:redundant RS485,Ethernet(10/100BASE-TX),supports Modbus,Profibus and other protocols.
Input/output:16-32 digital inputs,8-16 digital outputs,supporting programmable analog inputs.
Storage capacity:3 independent protection fixed value groups,supporting local or remote editing.
Configuration and extension
Configuration tool:Compatible with EnerVisto software,supports interlock logic and switch sequence configuration.
Human-computer interface:Graphic HMI provides real-time monitoring,measurement and alarm functions.
Environmental adaptability
Protection level:Not clearly marked,but it meets industrial-grade design standards.
Operating temperature:It is speculated that it supports-20°C to 70°C(refer to similar products).
3.Core application scenarios
Power system protection
Substation feeder protection,circuit breaker failure tripping,and grid-connected control at the same time.
Industrial automation
Factory distribution network monitoring,motor overload protection,fault isolation.
Energy and Transportation
Thermal power plant unit protection and rail transit power supply system monitoring.
