The Iris Power PDTracII system is an economical means of providing automated, continuous partial discharge (PD) measurement for motors, generators, switchgear, and dry type transformers. The Iris Power PDTracII system consists of three permanently installed capacitive couplers (one per phase), an Iris Power PDTracII monitor, with built in networking capability. The PDTracII can operate “stand alone” with only periodic downloading of archived PD data or it can be networked with the plant computer. The Iris Power PDTracII is a third generation continuous on-line monitor that provides maintenance professionals with an opportunity to automate PD testing. The Iris Power PDTracII monitor also allows for the possibility of integrating important operating conditions needed for trending PD activity, and can trigger a remote alarm, indicating the need for a more detailed analysis. The monitor uses the same proven 80 pF capacitive sensors that have been permanently installed on motors, generators, and switchgear (3.3kV and higher) over the last 20 years by utilities and other industries around the world.