RadiSys 879-8103-002-A端子模块

产品详细资料
受限接地故障极性测试本程序验证现场CT（相位和接地）与继电器上相应相位和接地点CT端子的正确接线，以实现受限接地保护。在中性点接地的Y形连接绕组上，外部A相接地故障期间的故障电流分布决定了正确的接线。从下图中可以看出，If故障电流以Ig的形式通过Y形接地中性点，可以通过向a相（W2）和G1/2端子注入单一电流来模拟。该测试的程序如下所示： 在继电器中选择D/Y30°变压器类型，并为相位和接地绕组输入设置相同的CT比。所选择的变压器类型确保G1/2接地输入与绕组2（Y形）相关联。 仅启用受限接地故障保护，并在继电器实际值下监测接地差动电流。 如上图所示，连接单个电流源，将电流注入接地G1/2端子的G10和串联的绕组2相A端子。 验证接地电流和A相电流同相 验证接地差动电流是否为零注意：如果在同一方向的两个继电器端子（相位和接地）上看到外部相间接地故障电流，则限制接地故障保护的CT的极性和接线是正确的。受限接地故障保护的响应基于中性电流和接地电流矢量差产生的接地差动电流的大小
Restricted Ground Fault Polarity Test This procedure verifies the correct wiring of field CTs (phase and ground) to the corresponding phase and ground CT terminals on the relay for the purposes of the restricted ground fault protection. The correct wiring is determined by the distribution of fault current during external phase A to ground faults on wye-connected windings with grounded neutral. From the figure below, the I f fault current travels through the wye-grounded neutral as I g and can be simulated by injecting a single current into the phase A (W2) and G1/2 terminals.The procedure for this test is shown below:  Select the D/Y30° transformer type into the relay and set the same CT ratio for both phase and ground winding inputs. The selected transformer type assures the G1/2 ground input is associated to winding 2 (wye).  Enable the restricted ground fault protection only and monitor the ground differential current under the relay actual values.  Connect the single current source to inject current into G10 of the ground G1/2 terminal and to the connected in-series winding 2 phase A terminals as shown on the figure above.  Verify the ground current and phase A current are in phase  Verify the ground differential current is zero Note The polarities and wirings of the CTs for the restricted ground fault protection are correct if the external phase-to-ground fault current is seen on both relay terminals (phase and ground) in the same direction. The response of the restricted ground fault protection is based on the magnitude of the ground differential current resulting from the vector difference of the neutral and ground currents
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。

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发货快，货期精准，

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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