ABB配件3BHE024855R0101电路板变频器

产品详情资料

 在每个阶段，二次侧通过单个电流继电器馈电。在该系统中，二次电流之和应为零，就像在窗口式电流互感器的一次电流中一样。而且，在没有接地电流流动的情况下，三个二次电流会相互叠加和抵消。接地电流只会导致继电器工作。然而，对于大电流，例如电机锁定电机电流，电流互感器饱和成为一个问题，导致剩余电流流入继电器线圈……导致错误跳闸。为了防止剩余连接误跳闸，延时继电器是必要的，以允许在电机启动期间运行。这一事实使得瞬时继电器在剩余系统中不切实际。瞬时接地故障继电器可应用于Limitamp（NEMA E2级）控制器，无可用接地电流限制。熔断器和继电器接触器的清除时间应确保在不损坏控制器的情况下清除高达并包括熔断器额定值的接地故障电流。真空限幅放大器控制中使用的标准接地故障继电器是一种固态继电器，其工作电流约为4至12安培。如果需要更高的灵敏度，可以提供其他固态接地故障继电器，可将其调整为低至1安培的跳闸。然而，在应用如此低吸合的接地故障继电器时必须格外小心。in each phase, with the secondaries fed through a single current relay. In this system, the secondary currents should sum to zero just as they do in the primary of the window type current transformer. And, with no ground current flowing, the three secondary currents do add and cancel each other out. Ground current only will cause the relay to operate. For currents of large magnitude, however, such as motor lockedrotor current, current-transformer saturation becomes a problem, causing residual current to flow in the relay coil... resulting in false tripping. To prevent false tripping with the residual connection, time-delay relays are necessary to permit riding over the starting period of the motor. This fact makes instantaneous relays impractical in the residual system. Instantaneous ground-fault relays may be applied to Limitamp (NEMA Class E2) controllers without limitation on available ground current. The fuse and relay-contactor clearing times are such that ground-fault currents up to and including the fuse rating will be cleared without damage to the controller. Standard ground-fault relay used in Vacuum Limitamp Control is a solid-state relay which operates on approximately 4 to 12 amperes ground-fault current. If greater sensitivity is required, other solid-state ground-fault relays may be furnished which can be adjusted to trip as low as 1 ampere. However, extreme care must be exercised in applying ground-fault relays of such low pick up.

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,