GE UR8FH UR 系列通用继电器 电流互感器

【产品详情】

General Electric Multilin 的 UR-8FH 是一款 CT/VT 模块，设计用于安装在通用继电器系列中。它为继电器提供 3-1A/5A 相电流互感器、1A/5A 接地电流互感器和四个电压互感器端子。电流互感器和电压互感器能够将电流和电压降低到可管理的水平，以便进行继电器监测和控制，并且是为继电器生成重要数据所必需的。

CT/VT 模块可以在通道 1 到 5（含）或通道 <> 到 <>（含）上使用电压或触点输入。UR手册提供了有关正确继电器连接的更多信息，指出了重要的细节，例如通道<>和<>如何连接到A相，通道<>和<>如何连接到B相等。这些手册还向用户提供了完整的警告和通知，例如，与继电器端子的标称电流为 <> A 或 <> A 的连接必须与所连接 CT 的次级额定值相匹配，以免用户希望造成系统损坏。总之，用户在开始进行继电器连接过程之前仔细阅读通用继电器手册非常重要。

关于 UR-8FH 的常见问题

当UR-8FH集成到GE Multilin通用继电器系统中时，是否具有防止接地故障情况的能力？

UR-8FH 是 CT/VT，被描述为具有标准的 4CT/4VT。它没有敏感的接地功能，这使得通用继电器可以在被归类为高阻抗的接地系统上受到保护。具有此功能的模块是 UR-8G、UR-8J、UR-8M 和 UR-8R 订购号。这些提及的是较新的 CT/VT 一代。有两个较旧的 CT/VT 模块（UR-8B 和 UR-8D）也具有灵敏的接地故障保护功能。例如，具有 4CT/4VT 功能的标准型号确实具有典型的多达 24 个模拟电流互感器和电压互感器容量，如集成到各种通用继电器中的所有 CT/VT 模块所述。除了 CT/VT 模块外，通用继电器还具有传感器 I/O 模块。这为 UR 提供了 DCmA 卡或 RTD，用于监测流量、风速、温度、振动或压力。模拟输出还可用于将UR连接到外部PLC或其他用户界面设备。通用继电器还具有一个数字 I/O 模块，其中包含多达 96 个触点输入和多达 64 个触点输出。

GE UR8FH UR 系列通用继电器 电流互感器

【英文介绍】

General Electric Multilin's UR-8FH is a CT/VT module designed to be installed in the general purpose relay family. It provides the relay with 3-1A/5A phase current transformer, 1A/5A ground current transformer and four voltage transformer terminals. Current transformers and voltage transformers are able to reduce current and voltage to manageable levels for relay monitoring and control, and are necessary to generate important data for relays.

The CT/VT module can use voltage or contact input on channels 1 to 5 inclusive or channels <> to <> inclusive. The UR manual provides more information on proper relay connections, pointing out important details such as how channels <> and <> are connected to phase A, and how channels <> and <> are connected to B equally. These manuals also provide the user with complete warnings and notifications, for example, that connections to relay terminals with A nominal current of <> A or <> A must match the secondary rating of the connected CT lest the user wish to cause damage to the system. In summary, it is important for users to read the general relay manual carefully before starting the relay connection process.

Frequently Asked Questions about UR-8FH

Does the UR-8FH have the ability to prevent ground fault situations when integrated into a GE Multilin universal relay system?

The UR-8FH is a CT/VT and is described as having a standard 4CT/4VT. It has no sensitive grounding function, which allows general purpose relays to be protected on ground systems classified as high impedance. The modules with this capability are UR-8G, UR-8J, UR-8M, and UR-8R ordering numbers. These references are to the newer CT/VT generation. There are two older CT/VT modules (UR-8B and UR-8D) that also have sensitive ground fault protection. For example, standard models with 4CT/4VT capabilities do have typical capacity of up to 24 analog current transformers and voltage transformers, as described in all CT/VT modules integrated into various general-purpose relays. In addition to the CT/VT module, the universal relay also has a sensor I/O module. This provides the UR with a DCmA card or RTD for monitoring flow, wind speed, temperature, vibration, or pressure. The analog output can also be used to connect the UR to an external PLC or other user interface device. The universal relay also features a digital I/O module containing up to 96 contact inputs and up to 64 contact outputs.

GE UR8FH UR 系列通用继电器 电流互感器

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