Since the first PD detector in the 60’s, Haefely-Tettex combined the best of both worlds in the release of the DDXTM 9121b Partial Discharge Detector, powerful yet easy to use. Our partial discharge product offering includes all one needs for factory testing. When it comes to partial discharge testing, you can’t beat the Haefely instruments team.

HAEFELY, the pioneer company for partial discharge testing has been continuously developing and upgrading application specific high-voltage partial measuring/analyzing solutions over the years. The latest in a long line of distinguished PD detectors is the DDX 9160 and DDX 9161. HAEFELY has set a new benchmark with unmatched performance. The new front-end solution provides a solution with up to 4 PD and Voltage channels in a single compact body with the market leading «weight per channel» solution reaching only 1.3 kg for 4 channel option.

A powerful digital signal processing allows user to select any measuring frequency range within IEC 60270 and far beyond. This with the steepest filter characteristic for the high noise rejection. Unique built-in measuring impedance (AKV) makes the set-up easier and more compact than ever.

New software based on CaMS (HAEEFLY’s Control and Measurement Studio) provides the most flexible and user-configurable environment on the market. Anything from single meter display up to complex analysis can be configured and displayed, depending on user’s experience, application or need.

The optically decoupled front end provides complete galvanic isolation between control room and test field. It thus affords the personnel the highest safety level and in addition minimizes ground loop, resulting in a reduced interference coupling.

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Applications