This type of discharge coiI is epoxy resin vacuum casting single phase, indoor semi-enclosed type product. lt is applicable to be used for the power system with AC frequency 50Hz and rated voltage 10kV. It is connected with high voltage parallel connection capacitor group. When capacitor group cuts off from the system, it can take only five seconds to reduce the residual voltage of the capacittor group to safe voltage. When opertlng is normaI, the secondary winding is used as voltage indicator. lf users have special requirements, it can have relay protection action with residual voltage winding.  

Type description

Construction

Thia discharge coil adopts iron core semi-casting type structure. The iron core is made up of high grade siIicon-steeI sheet. The product is smaII volume, lihgt weight, Iittle Ioad and strong abiIity of resistance to over voltage, convenient use and installation and needn't maintenance. lt is new product for superseding the oil-immersed type discharge coil.  

Service condition

installation position: indoor type;

ambient temperature: -5~+40°c;

altitude: not over 1000m;

no caustic gas, smoke and no dust of transmitting electricity character and blast at installation place;

no smart mechanism vibration in the installation site;

relative humidity: average relative humidity in the installation of every month is no more than 90%; average relative humidity pf every day is no more than 95%.

Technical data

the products are in accordance with DL/T653-2006 <specification of discharge coils for high voltage parellel connection capacitor order> stabdards;

load power factor: cosØ=0.8(lag);

the surface creepage distance: more than 300mm;

see form below for other technical parameters.