Capacitor switching forms part of the VolTrak system, this is controlled by a microprocessor that switches contactors using the BCD method depended on voltage & phase angle, we have employed the latest in microprocessor controls to do this and as a result can offer superior voltage asymmetry but have stuck with traditional technology for capacitor switching for the following reasons:

• If a thyristor fails in Hay , Horsham or Hanmer springs  where are you going to get a new one ?

• By limiting the current at switch-on  this relieves stress on the contactor and capacitor, we offer a 3 year warranty on contactor failure for this reason.

• It is proven technology that we have used since 1998 with no maintenance issues

•  Contactors are simple to replace, available everywhere, easy to fault find. 

• If all contactors are energized converter is fully loaded,  if one is energized its only partially loaded...SIMPLE!
  

We can offer and have used the thyristors method in the past with no problems, but  the contactor method when applied correctly is a lot easier to fault find and far more forgiving with regards to adverse conditions.. but dont take my word for it  ask one of our customers !!


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