Here is an example of the electrical characteristics of an EMI Filter that is displayed on the specification drawings for each filter. Each EMI filter has different electrical characteristics described in the characteristics outline.  Operating frequencies change based on location; 60Hz is mostly used in North America, where as the 50Hz is used in Europe, India, China and other countries around the world.  Leakage current pertains to the capacitors in the EMI Filter, as they can cause small amounts of current to “leak” to ground.  All Qualtek EMI filters are designed to meet all agency requirements for maximum leakage allowed. The HIPOT Rating is a test that is performed to expose insufficient insulation by applying voltage between the two lines and also between a line and the ground (which is the case). The Insertion Loss Table specifies how well an EMI filter suppresses the common and the differential noise within its operating range. This section of the Specification Drawing for an EMI filter holds a vast knowledge of electrical characteristics of Qualtek Electronics EMI Filters.