Low Voltage Equipment
Nokian Capacitors has manufactured self healing dry type low voltage capacitors since 1980. Today Nokian Capacitors manufactures low voltage units having rated voltages from 200V to 1000V for both frequencies 50Hz and 60Hz. For example, they can have the following
applications:
  • Delta or star connected 3-phase units to be used for power  factor correction in all kind of
         capacitor banks including detuned and tune filters.
  • 1-phase units to be used e.g. in heating installations
  • Capacitor units for special applications (trains etc.)
    • In the design  and  manufacturing of
         the new cool type capacitor unit (C-and N-series) the latest  knowledge in raw materials
         and processing has been utilized. While choosing  raw materials and manufacturing
         processes the quality of the  end products has been the first priority.

    As a proof of our continuous commitment to quality, Nokian Capacitors was awarded the Quality Certificate ISO 9001 in December 1993 which is followed-up with twice yearly audits. Capacitor units have been type tested according to IEC 831-1 and IEC 831-2 and they have CE-conformity marking and UL and CSA approval.

    Because the high temperature of the plastic insulation material is known to lead to its premature ageing, one of the main targets in the design of the new cool type capacitor unit was to find a construction having a low temperature rise which has been reached by the following means:

  • Losses of the elements have been minimized by mean of winding design and using short solid  copper  terminals.
  • Losses of the wiring have been minimized using solid copper busbars and thick copper wires  with low current density for
         internal connection in the capacitor unit.
  • Elements assembled in the steel container using a spacer to separate elements from each other.
  • The split design of the container allows much better colling due to a 40% increase in the cooling surface.

    • Safety has been also an important guideline in the design the main safety features being:

  • The capacitor is completely encased in steel container
  • The capacitor unit has been provided with two level protection comprised of individually  fused elements and non-flammable
         filling around the elements in larger capacitor units which displaces oxygen and absorbs energy in failure situations.
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