Our design approach is to isolate the components in a hermetically sealed module filled with either potting or oil - gas dielectric. Our proprietary oil - gas process is the preferred approach for voltages exceeding 7KV, for the following reasons:

• The natural wetting action of oil penetrates the pores of the materials it insulates, minimizing the possibility of surface creepage and corona.
• Adhesion of the dielectric is maintained despite repetitive temperature cycling.
• Convection currents set up by thermal gradients provide superior cooling to the components eliminating "hot spots" and increasing MTBF figures.
• Immunity to hostile environments such as high altitude.
• The modules are repairable down to the component level; thus; a complete failure analysis is possible if a unit is damaged in service.
• Resistance to shock and vibration is enhanced by the dampening action of the oil.
• A dielectric gas having insulating properties comparable to oil is used to provide for expansion and contraction in most configurations.
• In those cases where potting is required - ACT has developed numerous proprietary potting systems to meet specific application requirements.