描述
产品简要说明
Type 879.521是DEIF专为高可靠性电力保护设计的智能差动继电器,核心特性包括:
自适应差动算法:动态抑制区外故障误动
多通道冗余:光纤/电缆双模式输入
紧凑型设计:适配标准控制柜安装
产品详细说明
1.功能架构与算法
差动保护逻辑
判据设计:
基于电流相位与幅值的双重判据(符合IEC 60255-80标准)
灵敏度调节:
最小动作电流可设至0.1In(In=1A/5A可选)
智能诊断模块
谐波分析:
实时监测5次、7次谐波含量(抑制谐振过电压)
通道同步:
光纤/电缆双通道冗余设计(切换时间<5ms)
2.**硬件设计亮点
环境适应性
防护等级:
IP67(防水防尘)
工作温度:
-40°C至+85°C(宽温设计)
接口配置
输入输出:
6路高速数字输入(兼容脉冲信号)
2路光耦隔离输出(触点寿命10万次)
3.**运维与诊断
状态指示:
LED面板显示运行状态(就绪/报警/故障)
数据记录:
内置事件日志(容量1000条,支持USB导出)
Product brief description
Type 879.521 is a smart differential relay designed by DEIF for high reliability power protection.The core features include:
Adaptive differential algorithm:Dynamically suppressing faults outside the zone
Multi-channel redundancy:fiber/cable dual mode input
Compact design:adapted to standard control cabinet installation
Product details
1.Functional architecture and algorithms
Differential protection logic
Criteria design:
Double criterion based on current phase and amplitude(compliant with IEC 60255-80 standard)
Sensitivity adjustment:
Minimum operating current can be set to 0.1In(In=1A/5A optional)
Intelligent diagnostic module
Harmonic analysis:
Real-time monitoring of the harmonic content of 5 times and 7 times(suppressing resonant overvoltage)
Channel synchronization:
Fiber/cable dual-channel redundant design(switching time<5ms)
2.**Hardware design highlights
Environmental adaptability
Protection level:
IP67(waterproof and dustproof)
Operating temperature:
-40°C to+85°C(wide temperature design)
Interface configuration
Input and output:
6 high-speed digital inputs(compatible with pulse signals)
2-channel optocoupler isolation output(contact life 100,000 times)
3.**Operation and maintenance and diagnosis
Status indicator:
LED panel displays running status(ready/alarm/fault)
Data record:
Built-in event log(capacity 1000,support USB export)