产品详情资料
当阶段I0>>启动时,可以禁用阶段I0>的反时间功能,在这种情况下,运行时间由阶段I0>>确定。低通滤波器抑制模块测量的相电流和接地故障电流的谐波。图1显示了作为频率函数的信号抑制。过电流和接地故障继电器模块SPCJ 4D28配备了一个相位不连续保护单元,用于监测小和大相位电流。这些电流之间的差值通过表达式∆I=(Imax Imin)/Imax x 100%计算得出。当测量电流低于0.1 x in时,不使用相位中断保护。如果电流差超过该阶段的设定启动电流∆I,则相位中断保护阶段启动。如果相位不连续情况的持续时间超过该级的设定运行时间t∆>,则该级运行时会发出一个运行信号,该信号可路由至所需的输出继电器。同时,显示屏上的红色操作指示灯代码点亮。
The inverse time function of stage I0> can be inhibited, when stage I0>> is starting, in which case the operate time is determined by stage I0>>.A low-pass filter suppresses the harmonics of the phase currents and the earth-fault current measured by the module. Figure 1 shows the signal suppression as a function of the frequency The overcurrent and earth-fault relay module SPCJ 4D28 is provided with a phase discontinuity protection unit which monitors the minimum and maximum phase currents. The difference between these currents is calculated from the expression ∆I = (Imax-Imin)/Imax x 100%. The phase discontinuity protection is not in use when the measured currents fall below 0.1 x In.The phase discontinuity protection stage starts, if the current difference exceeds the set start current ∆I of the stage. Should the duration of the phase discontinuity situation exceed the set operate time t∆> of the stage the stage operates issuing an operate signal, which can be routed to the desired output relay. At the same time a red operation indicator code is lit on the display.
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质保:质保期一年!
主营产品简介
专注于DCS、PLC、机器人控制系统、大型伺服四大系统领域。
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●使用前:
在操作和维护,安装设备之前,请阅读并严格遵守安全相关的信息。
Read and strictly follow safety-related information before operatingmaintainingand installing equipment.
●使用者要求:
必须从事安装,组装或维护设备等相关工控电气机械以及其他相关技术的人员。
Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.应用范围:
应用于品牌本系列工业以及生产生活自动化设备产品。
Used in the brand of this series of industriaand production automation eauipment products
适用于场景:系统集成,非标定制,产线升级改造,原设备电气替换等等。
Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.
●操作人员:
应该由本品牌专业培训操作员来安装、操作和维修设备。专业人员具有技术能力强,熟悉安全信息和安全实施:
熟悉设备的安装加工、操作和维护:熟悉处理所有的潜在危险情况。
Equipment should be installed,operated and maintained by trained operators from the brand
●危险情况
警告
.请注意使用人员的人身安全。
●除了产品特性以及功能,还需了解产品的使用寿命环境。
●充分学习产品使用手册,否则非专业人员可能会造成人身危险。
Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.
●服务行业
适用水泥,木业,石业,橡胶,石油,化工,发电,环保,水处理,制冷,交通,钢铁,食品,饮料,船舶,制冷等行业
Applicable to cementwood,stone,rubber,petroleumchemical, power generation,