




产品详情资料
瞬时型继电器是通过使用安装在起动器中的零序窗型电流互感器来实现的,其安装方式允许三相线路的所有三根导线用作电流互感器的初级导线。相电流增加到代数零,无论大小如何,除了接地的一次电流引起的电流外,没有二次电流流动。该系统提供接地电流的正向指示,消除错误跳闸,并允许瞬时继电器。如果需要与其他接地故障继电器进行时间协调,则时间过电流继电器可用于电流互感器布置。在电力系统允许的情况下,对于某些尺寸的电机,接地故障继电器可用作差动继电器的廉价替代品。差动继电器检测到的大多数相间绕组故障会导致同时发生相间接地故障,从而操作接地故障继电器。因此,接地故障继电器可用作差动继电器的廉价替代品。检测三相系统接地电流的另一种方法是使用三个独立的线路电流互感器,其中一个是instantaneous-type relays is made possible through the employment of a zero-sequence window-type current transformer installed in the starter in such a way as to permit all three conductors of the three-phase line to be used as the current-transformer primary. Phase currents add to algebraic zero, regardless of magnitude, and no secondary current flows except that induced by the primary current going to ground. This system gives positive indication of ground current, eliminates false tripping and permits instantaneous relaying. If time coordination with other ground-fault relays is necessary, time overcurrent relays may be used in the currenttransformer arrangement. For certain sized motors where the power system permits, ground-fault relays may be used as a less expensive alternative to differential relays. Most phase-to-phase winding faults detected by differential relays result in a simultaneous phase-to-ground fault, thereby operating the ground fault relay. For that reason, ground fault relays may be used as a less expensive alternative to differential relays. Another method of detecting ground currents in a three-phase system employs three separate line-current transformers, one
发货期:1-3个工作日,具体可联系客服
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。
主营产品各种模块/卡件,控制器,触摸屏,伺服驱动器。
优势:供应进口原装正品,专业停产配件,
发货快,货期精准,
主营品牌包括 ABB贝利、GE/FUANC、FOXBORO、英维思TRICONEX 、本特利BENTLY、A-B罗克韦尔、艾默生EMERSON 、OVATION、MOTOROLA、XYVOM、霍尼韦尔HONEYWELL 、力士乐REXROTH、KUKA、NI、DEIF、横河、伍德沃德WOODWARD、瑞恩、施耐德SCHNEIDER 、安川、 穆格MOOG、PROSOFT等品牌。
只卖库存产品;出完需订货!价格以客服说明为准!!订货货期以客服说明为准,有任何疑问请联繁客服! Limited stock, Contact US!
●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,
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