RadiSys CEQME2-610E-0使用配置手册

产品详细资料
零序补偿去除的影响注意：用于在Y侧获得30°相移的变换会自动去除这些信号中的零序电流。745总是从德尔塔绕组电流中去除零序电流。如果从三角洲侧绕组电流中去除零序分量，则绕组2的电流值将在不平衡条件下发生变化。考虑上述情况，将1×CT注入绕组2的A相。对于1×CT电流，零序值为1.0×CT或0.333×CT A的1/3。因此，I W2a'的值为（1.0–0.333）×CT=0.6667×CT A。如上所述，该值必须除以0.797的CT误差校正因子。因此，当仅在绕组2中注入1×CT时，A相的差分电流值为：去除零序电流的动作导致与引入B相和C相的零序值相等的电流。因此，这两个元件的差分电压为：现在，将1×CT施加到绕组1的A相，将相同的电流施加到A相的绕组2，但180°异相，以正确表示CT连接，A相元件中的总差动电流将为（0.57–0.84）×CT=–0.26×CT。以这种方式将电流注入绕组1和2的A相，会将（–0.57×CT+0.42×CT）=–0.15×CT的差动电流引入B相，将（0.0×CT+0.52×CT）=0.42×CT引入C相。
Effects of Zero-sequence Compensation Removal Note The transformation used to obtain the 30° phase shift on the Y-side automatically removes the zero-sequence current from those signals. The 745 always removes the zero-sequence current from the delta winding currents. If the zero-sequence component is removed from the Delta-side winding currents, the Winding 2 current values will change under unbalanced conditions. Consider the case described above, with the 1 × CT injected into Phase A of Winding 2. For the 1 × CT current, the zero-sequence value is 1/3 of 1.0 × CT or 0.333 × CT A. The value for I W2a' is therefore (1.0 – 0.333) × CT = 0.6667 × CT A. This value must be divided by the CT error correction factor of 0.797 as described above. Therefore, the value of differential current for Phase A, when injecting 1 × CT in Winding 2 only, is:The action of removing the zero-sequence current results in a current equal to the zerosequence value introduced into phases B and C. Hence, the differential current for these two elements is:Now, applying 1 × CT into Winding 1 Phase A and the same current into Phase A Winding 2, but 180° out-of- phase to properly represent CT connections, the total differential current in the Phase A element will be (0.57 – 0.84) × CT = –0.26 × CT. The injection of currents into Phase A of Windings 1 and 2 in this manner introduces a differential current of (–0.57 × CT + 0.42 × CT) = –0.15 × CT into Phase B and (0.0 × CT + 0.42 × CT) = 0.42 × CT into Phase C.
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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.

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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。

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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