It may seem unlikely that there could be a connection between an ancient Greek mathematician, a renaissance genius and the mundane subject of earth resistance testing but, as we’ll see shortly, there most certainly is! And the connection itself is...

Although recommended procedures for battery testing are well documented, test engineers are sometimes unclear about the details. This results in a significant number of calls to our helpline so we’re devoting this item to providing answers for some of...

In principle at least, measuring the ratio of a transformer is a straightforward task – simply connect an AC supply to the transformer and measure the voltages on the primary and secondary. This can be done with no more equipment than a suitable AC...

Power factor (PF) (or dissipation factor (DF)) and capacitance tests are widely used to assess the condition of the insulation in transformers and other electrical assets. This short series of articles provides a handy guide to the why and how of PF/ DF...