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Hunterdon 120K VA Low Secondary DC voltage Vacuum Furnace or DC Power SupplyVRT (Variable Reactance Transformer) Hunterdon, 120 KVA VRT (Variable Reactance Transformer) Package consisting of (3) 40 KVA water cooled units. 460 volts primary 75 volt secondary.(3) DC supplies (8 VDC, 40 ADC). Mounted in enclosurePaschen's Law explains why lower voltage is required for the heating elements in a vacuum furnace [to prevent arcing]This supply transforms 460 V Primary to 8 V DC with 120 KVA of power with three transformersA new supply of this size is $30-50,000Additional Prep Fees May Apply