描述
产品简要说明
LMR-111D 700398.20是DEIF专为同步发电机并网保护设计的单功能保护继电器，核心特性包括：
失电保护：检测主电网电压异常并触发切换
快速响应：响应时间<30ms，保障系统稳定性
宽范围适配：支持AC 57V至690V输入电压
产品详细说明
1.核心功能解析
电压监测机制
双周期对比：周期1/2与周期4/5的电压差异超过阈值时触发保护
复位逻辑：RESET信号激活后，需等待200ms辅助电压稳定
输出控制设计
双转换触点：2个转换开关触点（NE/ND可选）
负载能力：支持阻性负载8A（250V AC/150V DC）
2.环境与可靠性
耐候性能
温度范围：-25°C至+70°C运行（温漂每10°C±0.2%满量程）
防护等级：IP40（外壳）/IP20（端子）
电磁兼容性
EMC标准：符合IEC/EN 61000-6全系列工业抗扰度要求
3.安装与维护
接线规范：
铜导线最大截面积2.5mm²（多股）
端子需密封防止误调
认证限制：
UL认证仅支持24V DC/110V AC电源
定制后UL标签自动失效
产品概述:LMR-111D 700398.20
LMR-111D是DEIF针对发电机组并网场景开发的高可靠性保护继电器，通过精准电压监测与快速响应机制，确保主电网失电时同步发电机的安全切换，适用于海上平台、分布式能源站等关键电力系统。
Product brief description
LMR-111D 700398.20 is a single-function protection relay designed by DEIF for grid-connected protection of synchronous generators.The core features include:
Power loss protection:detects abnormal voltage of main grid and triggers switching
Quick response:Response time<30ms to ensure system stability
Wide range adaptation:Supports AC 57V to 690V input voltage
Product details
1.Core function analysis
Voltage monitoring mechanism
Bicycle comparison:When the voltage difference between period 1/2 and period 4/5 exceeds the threshold,triggers protection
Reset logic:After the RESET signal is activated,wait for the auxiliary voltage to stabilize 200ms
Output control design
Dual conversion contacts:2 conversion switch contacts(NE/ND optional)
Load capacity:Supports resistive load 8A(250V AC/150V DC)
2.Environment and reliability
Weathering performance
Temperature range:-25°C to+70°C operation(temperature drift every 10°C±0.2%full scale)
Protection level:IP40(shell)/IP20(terminal)
Electromagnetic compatibility
EMC standard:complies with the full range of industrial immunity requirements of IEC/EN 61000-6
3.Installation and maintenance
Wiring specifications:
Maximum cross-sectional area ofcopper conductors 2.5mm²(multi-strand)
Terminals need to be sealed to prevent misalignment
Certification restrictions:
UL certification only supports 24V DC/110V AC power supply
After customization,UL tags will automatically fail
Product Overview:LMR-111D 700398.20
LMR-111D is a high-reliability protection relay developed by DEIF for grid-connected generator sets.Through precise voltage monitoring and rapid response mechanisms,it ensures the safe switching of synchronous generators when the main power grid loses power.It is suitable for key power systems such as offshore platforms and distributed energy stations.
