The ICMflex high voltage instrument family offers inherent operator safety and greatly simplifies distribution class cable testing and other field tasks involving partial discharge detection, loss factor (tanδ) measurements, and PD fault location. It has been designed to simplify the application and to combine different measurement tasks with one instrument. With the unique concept of the ICMflex instruments, the entire acquisition hardware is placed on high voltage potential right at the position where the signals are. Thus, no signal cables are needed, as the instrument is fully self-contained and battery operated. In case that the instruments are used for measurements in an environment with high frequency (HF) disturbance, they can be equipped with a gating input for effective noise reduction. Every ICMflex instrument is fully remote controlled via Bluetooth or fiber optic communication. Using wireless Bluetooth or fiber optic technology the ICMflex tanδ and partial discharge analyzer family increases operator’s safety and greatly simplifies off-line testing and analysis of distribution class cables and rotating machine stator windings.