MPD 800 Universal partial discharge measurement and analysis system

The next level in partial discharge testing: MPD 800 20 years of reliability and experience The MPD 800 is the successor to our MPD 500 and MPD 600 partial discharge (PD) measurement and analysis systems. After 20 years of experience in this sector, it was time to bring PD testing to a new level. Established features were redesigned, resulting in the most powerful, accurate and robust test system on the market. MPD 800 is ideal for factory and on-site testing, even in the most demanding environments. Due to its excellent filtering features, even the smallest PD pulses can be separated from interference...

One device for all assets and testing applications You can use the MPD 800 for a wide range of testing applications, beginning with the traditional power supply sector, at manufacturers or repair shops, in laboratories or, for example, during diagnostic testing of motors in the industry sector. It supports you during standards-compliant PD testing for routine and type testing, factory and site acceptance testing, as well as for troubleshooting to localize or investigate PD sources in: >> Power transformers >> Power cables >> Rotating machines >> Gas-insulated switchgear (GIS) and medium-voltage...

Measuring principle to minimize the impact of on-site interferences Challenges during partial discharge detection The challenge when analyzing partial discharge (PD) is to detect and evaluate discharges in the range of pico-coulombs (pC), while dealing with test voltages of up to several hundred kilovolts (kV) and large test set-ups which act as radio-frequency (RF) antennas. External interference and noise from nearby equipment, for example caused by corona or other radio-frequency sources, may overlay these highly sensitive PD measurements. HIGH SENSITIVITY AND DIGITAL FILTER The MPD 800 is...

Measuring principle using MPD technology The MPD 800 system consists of an MPD 800 measurement device, the MCU2 control unit and the MPD Suite software. Depending on the measurement, the MCU2 is connected to a single or multiple MPD 800 devices using fiber-optic technology. The MPD 800 devices and RBP1 batteries are connected to the test object either directly or via CPL1 or CPL2 coupling devices. The MCU2 is connected via USB to a laptop or PC with the installed MPD analysis software. This approach results in several advantages: >> Safe testing approach due to galvanic isolation >> attery-operated...

How to prepare partial discharge measurements Flexible application-oriented packages The MPD Suite software offers different software packages, software add-ons and modules for our MPD 800 system. You can choose between a set of software packages from essential to universal, and tailored application-oriented software packages. Dedicated software modules provide you with specific functionalities, such as a .COM and web-based interface for easy automation, or for partial discharge (PD) measurement during DC voltage testing. Have peace of mind During high-voltage testing, flashovers and breakdowns...

Simplify your user profiles The MPD Suite software can be completely customized depending on your needs. You can set individual test specifications, such as frequency range, filters, assessment levels or hide individual software components such as tabs, diagrams, buttons, or feature groups. This is useful, for example, in cases of dedicated testing applications, such as PD analysis on rotating machines or cables where you do not need all of the features the software offers. By changing the software settings and defining dedicated user profiles, you can simplify the user interface and save time....

How to set and perform partial discharge measurements Keep an overview Commonly, multiple MPD 800 devices are in use for multi-channel measurements or testing of transformers, generators, or on-site cable testing. The “system overview” functionality provides a clear overview of your measurement setup. It displays all connected MPD 800 units and shows the most important partial discharge (PD) measurement values and settings of each PD channel. Thus, you can keep an overview of the MPD measurement setup. Configure your measurement Calibrate your setup PD events can sometimes be overlaid by disturbances...

Powerful recording and replay MPD 800 records dedicated PD and RIV events into dataset files. These files contain unprocessed raw data and include all measured values and all relevant system settings. That way, measurements become traceable and you can use all kinds of analysis, gating and reporting functions for post-analysis. The recorded dataset files can be cut individually, for example, to focus on relevant PD events. As the playback speed can be freely selected, some sections can be played back more slowly in order to be analyzed in greater detail. Customize your reports You can record...

How to suppress noise and separate partial discharge sources for re Three-phase filtering tool 3PARD Single-phase filtering tool 3FREQ Partial discharge (PD) events closer to one phase can also be detected on the other phases. The 3PARD (3-phase amplitude relation diagram) tool simplifies the differentiation of various PD sources and PD interferences. It relies on a synchronous three-phase measurement of a test object. The 3FREQ (3-center frequencies relation diagram) is a onechannel filtering tool using three digital filter frequencies. It characterizes PD sources by their frequency signature....

liable analysis The channel gating can easily be configured or switched off in the software. The 2-channel PRPD overview shows the filtered pulses (disturbances) and the measured PD pulses in real-time. Measurement example using phase/amplitude window gating in the PRPD diagram. Channel gating: Second channel for gating PRPD gating: Window gating of phase and amplitude To reduce the effect of frequency-variable disturbances, such as inverter noise on the measurement results, you can connect an additional MPD 800 channel as a gating channel. Phase/amplitude gates allow the MPD 800 to eliminate...