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VME-U10B 381-641697-5备件工控模块

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VME-U10B 381-641697-5备件工控模块

类目:RELIANCE
型号:VME-U10B 381-641697-5
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进一步说明这一点,下图显示了相位A和C中的电流如何相加形成相位“B”。再一次,如果其中一个相位的极性相差180°,则平衡系统上产生的矢量的大小将相差1.73倍。在三线电源上,此配置将始终有效,并且将正确检测不平衡。在单相情况下,继电器的插入CT处始终存在较大的不平衡。例如,如果相位A丢失,相位A将读取零,而相位B和C都将读取相位C的大小。如果另一方面,相位B丢失,则在供电时,相位A与相位C将相差180°,并且相位B的矢量相加将等于零。GE Power Management 469 Motor Management Relay limits(电机管理继电器限值)不是一门黑白科学,设置保护继电器热模型有一定的艺术性。热极限的定义对不同的制造商来说意味着不同的事情,而且通常情况下,信息是不可用的。因此,重要的是要记住电机保护热建模的目标是:在不影响电机正常和预期运行条件的情况下热保护电机(转子和定子)。469热模型提供了集成的转子和定子加热保护。如果冷却时间常数与电机数据一起提供,则应使用它们。
 illustrate the point further, the diagram below shows how the current in phases A and C sum up to create phase 'B'. Once again, if the polarity of one of the phases is out by 180°, the magnitude of the resulting vector on a balanced system will be out by a factor of 1.73. On a three wire supply, this configuration will always work and unbalance will be detected properly. In the event of a single phase, there will always be a large unbalance present at the interposing CTs of the relay. If for example phase A was lost, phase A would read zero while phases B and C would both read the magnitude of phase C. If on the other hand, phase B was lost, at the supply, phase A would be 180° out-of-phase with phase C and the vector addition would equal zero at phase B. GE Power Management 469 Motor Management Relay limits are not a black and white science and there is some art to setting a protective relay thermal model. The definition of thermal limits mean different things to different manufacturers and quite often, information is not available. Therefore, it is important to remember what the goal of the motor protection thermal modeling is: to thermally protect the motor (rotor and stator) without impeding the normal and expected operating conditions that the motor will be subject to. The 469 thermal model provides integrated rotor and stator heating protection. If cooling time constants are supplied with the motor data they should be used.

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DCSPLC、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,