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Three-phase capacitors for reactive power factor requirements in medium-voltage networks

The three-phase capacitor CHDTP is a cost-effective solution for reactive power requirements in medium-voltage networks. 

The capacitors consist of a thin dielectric polypropylene film wound together with electrodes of aluminum foil. Discharge resistors are built-in.

A bio-degradable hydrocarbon compound with excellent electrical properties is used as the impregnation fluid. The container is made of surface-treated high-quality steel and the bushings and terminals are of the highest quality and reliability.


  • Open-rack, metal enclosed or pole mounted capacitor banks
  • Power factor correction for motors and load centers 
  • Suitable for heavy-duty operation in all climatic conditions

Why Hitachi Energy?

  • Excellent track record on reliability
  • Usable in the most demanding applications
  • Folded foil electrodes reduce partial discharge generation
  • Unit tank is constructed from a high-grade 304 stainless steel providing excellent corrosion resistance
  • Seams are fully TIG welded

Brief performance data

CHD (three-phase)   
Power Up to 500 kvar
Voltage range 1-20 kV
Frequency 50-60 Hz
Current Maximum 110 A
Dielectric Polypropylene film
Impregnant Non-PCB
Discharge resistors Built-in
Losses ≤ 0.2 W/kvar including resistors
Operating temperature -10/+50°C
Location Indoor or outdoor
Altitude ≤ 1,000 m above sea level

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