High Voltage Test Fixture (HVTF) Rated to 230°C – A unique Teflon sample holder for bulk ceramic Devices. This sample holder is meant to be used at room temperature, used with silicone oil, or be placed in a chamber. The HVTF is made of high-temperature Teflon and is able to withstand exposures of up to 180°C continuous or 250°C for short periods, making it ideal for both high-voltage and high-temperature testing. The HVTF seperates into two parts. The sample is placed in a chamber in bottom half of the fixture. A copper electrode fixed in the bottom of the chamber contacts the electrode on the bottom of the sample. A 25KV cable connects the copper contact to an external 25KV electrical connector. The bottom chamber is sealed so it may be filled with insulating oil to protect the sample from the arcing that may occur in "openair". The top half of the fixture fits over the bottom half, sealing the chamber. The top half of the fixture has an unclamped copper electrode that is held in place against the top sample electrode by gravity. This contact is free to move up or down to allow for varying thicknesses of sample.