The Megger OTS100AF is a fully automatic insulating oil dielectric breakdown tester designed for laboratory use. It is line-powered and can perform accurate breakdown voltage tests on mineral, ester, and silicon insulating oils. The instrument has a test voltage range of 0 - 100 kV, with a resolution of 0.1 kV and an accuracy of ±1% ± 2 digits. It features a precision test vessel with electrode gap adjustment wheels to ensure repeatable results. The test chamber has an easy - clean surface and a drain for spilled oil, and is covered by a transparent, electrically shielded lid for safety. It is pre - programmed with a library of international breakdown test standards and also allows users to create custom tests. The results can be viewed on - screen, printed via an internal or external printer, and managed using the included PowerDB Lite software.