Megger,, Quick online surveying of PD (Partial Discharge) activity in medium and high voltage networks ■ Prevent costly outages and long maintenance times ■ Ideal tool for quick non-invasive surveys ■ Fast verification of PD activity eminating from various type of MV and HV assets Partial Discharge Detector Time Domain

The ideal tool – offering versatility and flexibility ULTRA HIGH FREQUENCY UHF partial discharge detection is a new technology with a lot to offer in terms of capability, convenience and cost. It is quick and easy to apply, it can be used to survey HV and MV plants without taking them out of service, and it can discriminate between conditions that are dangerous and those that are less serious. During operation electrical components and systems are exposed to electrical, mechanical and thermal loads as well as harmful ambient conditions. All these stresses contribute to the deterioration of the...

Functional diversity for simple, accurate and safe results The UHF PD Detector is the ideal tool for periodic non-invasive surveys in MV and HV substations and can identify defects in an early stage. It should therefore be part of the toolbox for all maintenance and service teams. Thanks to the high measuring bandwidth, UHF measurements can accurately measure local online PD activity in frequencies above those of common disturbances. The UHF PD Detector can be used to identify partial discharge emanating from various HV assets including cable terminations, voltage transformers, surge arresters...

Time-synchronous PRPD pattern To make reliable decisions, time-synchronous PRPD patterns (phase-resolved partial discharge) are required. The UHF PD Detector can be synchronized with the power frequency by means of a number of methods. This ensures that the exact PRPD pattern can be obtained and that synchronous noise can be easily distinguished from partial discharges so that no false decisions are made. Typical pattern “synchronous noise” no PD - not critical Typical pattern “partial discharges” internal PD - critica

Two channels More functions, reliable results Another technical highlight of the UHF PD Detector are the two input channels. This allows the user to compare several sensors, or phases, at the same time. This capability further increases the functionality of the UHF PD Detector and makes it a unique, efficient and reliable measurement system. Permanent installed UHF Termination Sensor

Due to the large number of compatible sensors, both MV and HV plants can be tested with the UHF PD Detector. In addition to this, the UHF PD Detector has the unique advantage that both RF and UHF measurement functions are combined in one single measuring instrument. Partial discharges emanating from the most diverse components of MV and HV systems, such as cable terminations, surge arresters, voltage and current transformers, switchgear and insulators, can be identified.

Product highlights Wireless synchronization with the power frequency Actual size Acoustic playback of the measured PD by headphone Up to 10 hours of operating time on a single battery charge 3 measuring modes – spectrum, time domain and level measurement Large internal memory – no need to plug USB sticks in and out

Two channels: ideal for comparing two phases or sensors Two frequency bands allow a wider application range Simple operator guidance – only important points are displayed Operation via touch screen or keypad

Please watch the video UHF PD DETECTOR (1:44) uk.megger.com/uhf Megger · Dr.-Herbert-Iann-Str. 6 · D-96148 Baunach Tel. +49 (9544) - 680 · Fax +49 (9544) - 2273 [email protected] www.megger.com We reserve the right to make technical changes. UHF-PDD_BR_EN_V04.pdf The word ‘Megger’ is a registered trademark. Copyright ©