DEIF Type 879.521 DEIF

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)

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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)