西门子模块6ES7241-1CH32-0XB0
西门子模块6ES7241-1CH32-0XB0
3WL 非自动空气断路器,高达4000A(DC)
3WL非自动空气断路器型式适用于直流应用场合。 外部保护装置DIGmat S100为SENTRON3WL非自动空气断路器提供可调过载和短路保护。
这取决于分流电阻和 DIGmat S100 脱扣器件的测量链。 分流电阻提供有 1000A、2000 A 和 4000 A 型(也可根据客户要求提供其它型号), 符合标准 DIN 43703,精度等级 0.5。
额定电流 In时的测量回路电压为 60 mV DC。 .
测量回路电压是初级电流的线图像。
DIGmat S100脱扣装置监测所提供的一次电流的图像,并且将它与在该装置上设定的脱扣特性曲线进行比较。 DIGmat S100 上的参数设置也适用于直流反馈。 因此也适用于反向负载。
可通过以下变量确定和说明脱扣特性
曲线:
过载保护:
设定范围IR = 0.4 ... 1.0 In
该曲线具有一个I2t 特性。
可以在2s和10s之间选择脱扣时间tRtR 定义为6 ×IR.
短路保护:
设定范围Ii = 1.25 × IR 不**过大值 4 × In
如果**过设定值,会在 50ms 内脱扣。
In= 断路器额定电流
IR= 可调过载释放的设定电流值
tR=过载脱扣器的*脱扣时间
Ii=可调短路释放的瞬时脱扣电流
苛刻的应用场合要求智能化的解决方案。SENTRON 断路器可保护单一机器或整套设备、隔离系统,并可与维护人员通讯。
SENTRON 3VA Molded Case Circuit Breakers
One system. For any application.
Requirements are increasing for cost-effective and energy-efficient operation of the electrical power distribution. Whether in industrial applications, buildings, or infrastructure: As a modular, highly variable system, the range of 3VA molded case circuit breakers provides thoroughly reliable operator and plant protection while supporting every process phase – from planning to the operation of electrical power distribution.
Comprehensive certification. bal use.
3VA molded case circuit breakers are available in several series with IEC approval as well as in series that comply with the IEC60947 and the UL489 standards. The system offers the best preconditions for machine and switchgear manufacturers. They can use all the functions of the molded case circuit breakers for plants that are operated in Europe and in North America and be completely confident of full compliance with the standards.
Further information:
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西门子模块6ES7241-1CH32-0XB0