BAUR’S Model DPA 75 Automatic Insulating Oil Tester is suitable for establishing the dielectric strength of transformer oils and other insulating liquids. It is available from Power Parameters .
Dielectric rigidity tests are conducted at test voltages ranging from 0kV to 75kV rms with voltage rise rates selectable between 0.5kV/ and 5 kV/sec. Three test vessels with electrodes in accordance with IEC and ASTM requirements are available. Electrode spacing is adjustable by means of verniers and an in-built temperature sensor as well as magnetic stirrer are included. Up to 5 test sequences are freely programmable by the user in addition to 13 standard test programs in accordance with ASTM, VDE, IEC, JIS and other standards.
Limitation of current (4mA) and rapid switch-off time (1ms) permit multiple breakdown measurements on silicone oil samples. The DPA 75 is suitable for both field and laboratory work as it is available with a battery option. It also has an RS 232 interface for PC communication and calibrations as well as an optional 24 digit matrix printer.