Capacitor unit is single phase with 2 bushings having live connection or one bushing with live steel case. Three phase capacitor units are internally delta or star connected with 3/4 bushings. It consists of small elements which are wound on state of art Automatic winding machine. Elements are made of 2 or 3 layers of polypropylene film as dielectric with alluminium foil as electrode. These elements are stacked, connected together with series and parallel arrangement Stacked capacitor with warpped layers of paper insulation is inserted into a steel container and it is vacuum dried at certain temperature in vacuum plant. Unit is impregnated with oil and then steel container is hermetically sealed.
Features
- Impregnated by non-PCB, bio-degradable low viscosity capacitor oil
- Capacitors are protected by internal elements fuses or by external unit fuse (Fig.1 & 2)
- Mild or Stainless steel tank with polyurethane light gray paint finish after shot blasting for resistant to severely corrosive atmospheres
- Wet process - porcelain bushing glazed for high strength and durability and hermetically sealed to the capacitor tank.
- Internal discharge resistors that reduce terminal voltage at 75 Volts or less within ten minutes after capacitor has been disconnected.
- Aluminum nameplate containing required IS/IEC/IEEE data.
- Capacitor meets all the parameters as per IEC-60871-2014 part 1 to 4 & IEEE 18:1012.
- BIL upto 200KV peak.
