由SD-ZB□系列剩余電流動作保護繼電器和零序電流互感器組合，構成接地故障保護裝置，適用于TN、TT和IT電網系統(tǒng)。通過接地電流互感器檢測出接地零序漏電電流，經剩余電流動作保護繼電器與設定值的比較和判別，及時發(fā)出動作信號，接通或斷開報警回路，以避免事故的擴大，從而保證人員及設備的安全。
   The combination of SD-ZB□ series residual current transformer and zero sequence current protection relay forms ground fault protection device, it applies to TN,TT and IT power system. Via the ground current transformer to detect the ground leak current, the current protection relay compares the sensed current with the setting value and issues operating signal timely, make or break the alarm circuit, to avoid the accident, ensure the safety of personnel and equipment.


關鍵詞：漏電脈沖繼電器品牌、漏電脈沖繼電器接線圖、接地故障繼電器接線圖、剩余電流繼電器工作原理


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