FD（G）2、FD（Z）2放電線圈工作原理

• 本型放電線圈系單相戶內(nèi)、戶外裝置，環(huán)氧樹脂絕緣的全封閉產(chǎn)品與高壓并聯(lián)電容器組并聯(lián)連接，當電容器組與系統(tǒng)斷開后，能在5s 內(nèi)將電容器組上的剩余電壓由 2 Un 降至50V 以下。在正常運行時，二次繞組可以作電壓指示，剩余繞組接成開口三角，當電容器極間局部發(fā)生故障時，會產(chǎn)生零序電壓，驅(qū)動繼電保護裝置。本型放電線圈特點為體積小，重量輕、無局部放電、抗過電壓能力強、空載損耗小，空載電流小、防污能力強、使用安裝方便、免維護，是替代油浸式放電線圈的產(chǎn)品。
• This type of discharge coil is single-phase,cast resin insulated used indoors or outdoors connected with high voltage parallel connection capacitor group.When the capacitor group is cut off from the system,it can take only five second to reduce the residual voltage of the capacitor group from 2Un to below 50V.When operating normal,the secondary winding is used as voltage indicator and the residual winding is connected as split triangle.If the pole of capacitor partial breaks down,it would bring the zero sequence voltage to drive relay protection gear.The product is small,light,little partial discharge energy and high resistance to over voltge,It is a new product for superseding the oil type discharge coil．

  型號說明 model meanings

  結構 Structure
  　　FD(G、Z)2/11/ 3-1.7-1(w) 型放電線圈為樹脂絕緣全封閉結構，F(xiàn)D(G、Z)2/11/ 3-1 7-1WG 為戶外干式瓷絕緣結構，采用環(huán)型鐵芯。在同一個鐵芯柱上同心地裝有一次、二次線圈。
  　　The discharge coil,is casting resin insulated and fully enclosed type.The discharge coil is dry type and porcelain insulated.They annular core.The prinary winding and secondary winding are installed concentrically on the same iron-core pole.
  
  主要技術數(shù)據(jù) main technical characterisetics

  型號Type	額定一次電壓 Rated primary voltage (kV)	額定二次電壓 Rated secondary voltage （KV）	額定二次輸出及相應的準確級 Rated secondary output and combination accuracy classes(VA) cosφ=0.8(lagged)			剩余電壓繞 組額定輸出 Rated output of residual voltage winding(VA)	放電容量 Discharge capacity（Mvar）
  			0.2	0.5	1
  FD(G.Z)2/6.3/√3-1.7-1	6.3/√3	100/√3 或100 100/√3 or 100	20	50	100	100/3V 6P 50	1.7
  FD(G.Z)2/6.3/√3-1.7-1	6.3/√3
  FD(G.Z)2/11/√3-1.7-1	11/√3
  FD(G.Z)2/11/√3-2.5-1	11/√3						2.5
  FD(G.Z)2/11/√3-3.4-1	11/√3						3.4
  FD(G.Z)2/10-1.7-1	10	100	20	50	100		1.7
  FD(G.Z)2/10-2.5-1							2.5
  FD(G.Z)2/10-3.4-1							3.4
  FD(G.Z)2/6.3/√3-1.7-1 W(G)	6.3/√3	100/√3 或100 100/√3 or 100	20	50	100	100/3V 6P 50	1.7
  FD(G.Z)2/6.3/√3-1.7-1W(G)	6.3/√3
  FD(G.Z)2/11/√3-1.7-1W(G)	11/√3
  FD(G.Z)2/11/√3-2.5-1W(G)	11/√3						2.5
  FD(G.Z)2/11/√3-3.4-1W(G)	11/√3						3.4
  FD(G.Z)2/10-1.7-1W(G)	10	100	20	50	100		1.7
  FD(G.Z)2/10-2.5-1W(G)							2.5
  FD(G.Z)2/10-3.4-1W(G)							3.4

  
  外形及安裝尺寸圖 Outline and installation dimension