The Megger range of automatic oil testers offer fully automatic testing with many advanced features. The design allows the operator to simply prepare an oil test vessel, load it with the sample oil, place it in the chamber and initiate the test sequence. The test set then carries out, the series of tests as specified in a large number of oil testing specifications. These define the sequence of tests including the stand and stir times, rate of voltage rise and number of tests resulting in a calculation of the average value of the oil breakdown strength. Withstand or proof testing can also be selected. This test subjects the oil to a preselected voltage for 1 minute to check for a breakdown.

The OTS60PB is a fully automatic, battery powered, portable oil test set. The test voltage is electronically controlled to the maximum of 60 kV. Designed for on site testing, the instrument is supplied in a rugged carrying case with a handle for ease of transportation. An internal rechargeable battery gives a large number of tests before recharging. A clear display shows a menu of test options and guides the operator through the set up program, illustrates the correct test electrodes and gap to use, shows the progress of each test and gives the results of the test sequence. The result can be set to give either a numerical average (with standard deviation where specified) or a pass/fail message. The display can be set to read in English, French, German, Italian, Spanish and Portuguese. An optional printer kit enables hard copies of results to be produced. Accessories, such as the battery charger, spare vessels, spare electrodes and a spacing gauge are located in an attached compartment. Stirring is carried out by a motor driven paddle stirrer.