These are sometimes used to test strings of Christmas lights ... We’ve seen various types of non-contact voltage and current sensing over the years. We’ve even seen biological voltmeters ...

Every electrical current generates a magnetic field, so a non-contact voltage tester can detect current in a conductor without actually touching it, even if the conductor is insulated. It has an ...

The tester is a vital tool for URD systems and to measure the resistance of substation ground cables. For more information about the design and use of this product, please contact High Voltage via the ...

A high voltage tester, also known as a megger, is a device that applies a high DC voltage across the insulation and measures the resulting current leakage. This allows the calculation of the ...

Separate chapters are devoted to the causes and methods of measuring and evaluating partial discharges arising in the insulation systems of high-voltage electrical machines. The following chapters ...