Omicron MPD 800 - Page 12

MPD 800 User Manual
12 OMICRON
Being the core component of the MPD 800 system, the MPD 800 acquisition unit is designed to perform
partial discharge measurement typically on power transformers, rotating machines or high-voltage
cables. The MPD 800 acquisition unit can be daisy chained by using a fiber-optic cable provided by
OMICRON to perform multi-unit measurements.The MPD 800 acquisition unit is designated to be
connected to a number of accessories enabling partial discharge measurement on various high- and
medium-voltage assets in high-voltage laboratories and on-site (see also 2.5 "Accessories" on page 49).
The MPD 800 acquisition unit can be connected to the following accessories to achieve the desired
measurement options or targets:
•The MPD 800 acquisition unit can be connected to the test object or to a coupling capacitor using
coupling units such as CPL1 or CPL2 external quadripole.
•The MPD 800 acquisition unit can be connected directly to coupling capacitors.
•The MPD 800 acquisition unit can be connected to high-frequency current transformers (HFCTs)
(for example, MCT 120) for measurements on ground connections of various high-voltage assets.
•The MPD 800 acquisition unit can be connected to voltage outputs or existing CPL 542s through
an intermediate connection to a V-to-AC-adapter.
•The MPD 800 acquisition unit can be connected to the existing terminal box (for example, the
terminal box connected to rotating machine).
•The MPD 800 acquisition unit can be connected to a partial discharge measuring bridge for
balanced measurements.
•The MPD 800 acquisition unit can be used to trigger external devices such as acoustic partial
discharge localization systems (for example, PDL 650) by its optical or electrical trigger output.
DANGER
Death or severe injury caused by high voltage or current
► Always observe the five safety rules (see 1.2.2 "Safety rules" on page 6) before
connecting or integrating the MPD 800 acquisition unit into a system.
DANGER
Death or severe injury caused by high voltage or current
The MPD 800 acquisition unit and its accessories are not suitable for reliably checking if
a system is electrically live or energized.
► If readings from the MPD 800 acquisition unit are used for safety relevant procedures,
perform a double check by an independent measurement device.
WARNING
Death or severe injury caused by high voltage or current possible
When the test object is energized, flashovers or electrical breakthroughs may occur due
to failure of test object. The MPD 800 acquisition unit and CPL1 or CPL2 are not
designed to withstand power frequency fault currents.
► Always observe the minimum safety distance and use personal safety equipment.