Line Voltage Leakage Tester

The line voltage leakage tester performs an electrical safety test while the unit under test is operating via line power. The line voltage leakage tester is in contrast to a typical hipot test where the device under test is actually not powered up.

The line voltage leakage test is most often required for medical devices, however, there are a few non-medical applications as well.
The line voltage leakage test is normally conducted at the high end of the line voltage rating for the device. Often line voltage leakage testers incorporate a 10% step up transformer to convert normal line voltage to high line voltage levels. The line voltage leakage test consists of placing the electrical equivalent of a human body in contact with exposed conductive points on the device under test and then recording the current flow under a variety of conditions.

The line voltage leakage tester variables usually consist of open and closed earth ground and normal and reversed line and neutral. The level of allowable leakage current is typically quite low, as low as 100 micro-amps. The current measurement circuit must be a true RMS type with a bandwidth of at least one megahertz.
Built-in low leakage scanning capability, provides the convenience of allowing the line voltage leakage tester to cover multiple test points without requiring manual intervention.