6FC5210-0DA20-0AA1三相差動繼電器，三相過電流繼電器和多配置的接地故障繼電器
報警通道激活的常開或常閉觸點
差動繼電器模塊提供穩(wěn)定的雙繞組電力變壓器和發(fā)電機變壓器組短路和繞組匝間保護，繞組間的短路保護發(fā)電機
接地故障繼電器模塊根據(jù)原則選擇提供變壓器高壓和LV側(cè)保護：穩(wěn)定電流差動原理，高阻抗原理，剩余電流原理或中性電流原理
6FC5210-0DA20-0AA1三級過電流模塊提供電力變壓器和發(fā)電機和二級備用接地故障保護
短工作時間甚至在電流互感器飽和
操作特性的差動繼電器模塊很容易適應不同的應用
穩(wěn)定不必要的操作發(fā)生在保護區(qū)和變壓器勵磁涌流的故障
二次諧波抑制不需要的繼電器操作預防變壓器勵磁涌流
第五諧波抑制不需要的繼電器操作防止變壓器過勵磁。第五諧波抑制可以中止，如果第五諧波的基本頻率分量和危險的過電壓上升率過高
寬CT比校正范圍：準確的校正通過數(shù)字設(shè)置
沒有中間電流互感器的雙繞組電力變壓器保護的需要：數(shù)值向量組匹配的高壓和LV側(cè)
四重型輸出繼電器，斷路器跳閘和五個輸出繼電器信號
五可編程的外部控制輸入用于從氣體繼電器報警及跳閘信號，機油溫度傳感器和其他傳感器的變壓器輔助設(shè)備
集成電路斷路器失靈保護動作時間可調(diào)
差動繼電器和接地故障繼電器模塊提供了模擬和數(shù)字信號的綜合干擾記錄器功能：信號可用于觸發(fā)選擇
敏感的相電流和相位角顯示便于檢查勵磁電路連接和向量組的匹配
高免疫力電氣和電磁干擾使繼電器可用于惡劣環(huán)境中
高可用性和系統(tǒng)的可靠性，由于硬件和軟件的不斷監(jiān)督
強大的軟件支持繼電器參數(shù)化和閱讀的測量和記錄值和事件數(shù)據(jù)
成員的spacom產(chǎn)品族和ABB的配電自動化系統(tǒng)
CE標記根據(jù)EC指令EMC
穩(wěn)定的差動繼電器的SPAD 346 C是專為保護雙繞組電力變壓器和發(fā)電機變壓器組對繞組匝間短路，匝間故障，接地故障，并對故障發(fā)電機和電動機繞組間的短路和極。此外，繼電器可用于三繞組變壓器的保護，以提供的電力變壓器的短路功率75%是來自同一方向供給，為補償電抗器和短電纜線路的保護。
沒有插入變壓器為雙繞組電力變壓器的保護需要，為繼電器允許向量組的匹配，相電流的零序分量和CT比值校正消除進行數(shù)值。
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