FDczEx8 Discharge Coil
一、 Description
    This type of discharge coil js single - phase, cast resin insulated used indoors or outdoors connected with high voltage parallel connection capacitor group.  When the capacitor group cuts off from the system,it can take only five second to reduce the residual voltage of the capacitor group from .5Un to below 50V.When operating normal,the secondary winding is used as voltage indicator and the residual winding is connecced 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 large calibre of resistance to over voltage.It is a new product for superseding the oil type discharge coil.
二、 Type designation

三、 Construction
    The discharge coil,  FDCZE( X) 8/11/\/3 -1.7-l( W),  is casting resin insulated and fully enclosed type.The discharge coil, FDGZE( X)8/11/\/3 -1.7 - 1WG, is dry type and porcelain insulated.  There are all is made up of annular core. The prinary winding and secondary winding are installed concentrically on the same core limb