RADISYS EPC-8A工控DCS系统

产品详细资料
继电器内置的坚固性不允许用户将接地输入分配给多个绕组。在EnerVista 745软件中，一个标志用文本通知用户：“已为另一个绕组选择接地CT输入'G#/#'”。在继电器固件上，显示“Input Function is Already Assigned”（输入功能已分配）文本。下表显示了用于典型变压器设置的接地输入：验证继电器的1 A或5 A标称电流是否与所连接CT的二次额定值相匹配。不匹配的CT可能导致设备损坏或保护不足。零序CT的位置，以便检测接地故障电流，如下所示。建议在零序CT上进行双绞线布线。重要提示：继电器的测量值高可达电流输入额定值的46倍。对于高于46×CT比率的电流，时间过电流曲线变为水平线。AC电压输入745有一个分压器类型的AC电压输入。没有内部保险丝或接地连接。可以使用大比例为5000:1的电压互感器。标称二次电压必须在60至120 V的范围内。3.2.7逻辑输入外部触点可以连接到16个逻辑输入。如图所示，这些触点可以是干触点，也可以是湿触点。也可以使用两种接触类型的组合。干触点的一侧连接到端子D11。这是+32 V直流电压轨。另一侧连接到所需的逻辑输入端子。当干触点闭合时，2.2毫安的电流流过相关电路
Robustness, built into the relay, will not allow the user to assign a ground input to more than one winding. In the EnerVista 745 software, a flag informs the user with the text: "Ground CT Input ’G#/#’ has already been selected for another winding". On the relay firmware, "Input Function is Already Assigned" text is displayed. The following table shows the ground inputs use for typical transformer setups:Verify that the relay’s nominal current of 1 A or 5 A matches the secondary rating of the connected CTs. Unmatched CTs may result in equipment damage or inadequate protection. The exact placement of a zero-sequence CT so that ground fault current will be detected is shown below. Twisted pair cabling on the zero-sequence CT is recommended. Note IMPORTANT: The relay will correctly measure up to 46 times the current input nominal rating. Time overcurrent curves become horizontal lines for currents above the 46 × CT rating.AC Voltage Input The 745 has one voltage divider type input for AC voltages. There are no internal fuses or ground connections. Voltage transformers up to a maximum 5000:1 ratio may be used. The nominal secondary voltage must be in the 60 to 120 V range. 3.2.7 Logic Inputs External contacts can be connected to the 16 logic inputs. As shown, these contacts can be either dry or wet. It is also possible to use a combination of both contact types. A dry contact has one side connected to terminal D11. This is the +32 V DC voltage rail. The other side is connected to the required logic input terminal. When a dry contact closes, a 2.2 mA current flows through the associated circuit
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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