Capacitors (Supplies reactive current)

 

“As capacitors are the major component of a Power Factor Correction System, many hours of testing and evaluation have been invested in their selection and physical mounting within the cubicle”

Capacitors are highest quality German Manufacture mineral oil impregnated (or Dry Type) in cylindrical Aluminum cans complete with overpressure disconnection device and discharge resistors (to meet AS3000). Capacitors are self-healing polypropylene film with maximum 65°C case temperature rating. Rated current is 1.5 times maximum in the presence of 10% Overvoltage and Harmonics. Power Loss is <0.25 Watts per kVAr

Detailed Specifications of Capacitors:

  • Standards
    • IEC 831 1+2/88, VDE 560-46+47 3/95
  • Overvoltages
    • +10% (8 hours daily)
    • +15% (30mins daily)
    • +20% (up to 5 mins)
    • +30% (up to 1 min)
  • Overcurrent
    • 1.3In
    • 1.5 In with 10% Overvoltage , 15% over capacitance and harmonics included, continuous operation.
  • Test Voltages
    • Terminal/ Terminal – 2.15 Ucn AC 2 Seconds
    • Terminal/ Casing – 4800 VAC, 2 Seconds
  • Temperature
    • Category -25/D ( max. 55°C) To IEC 831
    • Max Case Temp. 65°C
  • Inrush Current
    • maximum 200 Times
  • Rated Current Rated Capacitor Voltage – Ucn:
    • Standard – 440Volts (& 480 Volts)
    • Detuned – 525 Volts

Capacitors are mounted in a separately ventilated cubicle, away from reactors, contactors and any heat generating equipment.