The OTS PB and OTS AF insulating oil test sets are a range of automatic oil test sets that perform accurate breakdown and withstand voltage tests on mineral, ester, and silicone insulating liquids. All models have precision, shatter-proof test vessels that are easy to clean and provide repeatable results, whether they are used in the field or laboratory. They also have a transparent, shielded lid and a large test chamber, giving you easy access to the test vessel and allowing you see what is happening within the test chamber.

Test results are identified either by a serial number or asset ID and are time and date stamped. The units come with PowerDB Lite, Megger's asset and data management software, at no extra cost, giving you an excellent tool for downloading and printing results. They units also have an internal printer, so you can have a hard copy of your results. The instruments also have USB drives for easy transfer of test results and an external USB printer. The AF model also includes a barcode scanner.

These test sets have been designed with your safety in mind so that during a test, you can terminate at any time by pressing any button on the keyboard and this will remove the high voltage immediately and abort the test. The transparent lid also provides ample visibility within the chamber, yet is protected and electrically shielded by a screen with multiple links to instrument ground.

All of the current test standards worldwide are pre-loaded in the instrument for convenient automatic operation, however should a new test standard or an existing standard be amended, there are 3 custom tests that can be configured to the new requirements. This enables testing to continue to cover the short period while Megger updates the test procedure files. New updated files are then downloaded by the user and installed into the test instrument via a USB drive.