Atec Tettex-MIDAS-288x Series - Manual (Page 4)

C
Haefely has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice. LL_MIDAS288x_0711_LW - 4/6
a brand of
Haefely is a subsidiary
of Hubbell Incorporated.
ADVANCED INTERFERENCE SUPPRESSION
The built-in A daptive D ynamic N oise S uppression (ADNS)
eliminates the external interferences from the measuring
signal.
With ADNS we have successfully developed an advanced
interference suppression method (patented) that allows
measurements at the real power-line frequency!
For environments polluted with highest noise the system
switches into a Extended Noise-Suppression mode to
measure stable and accurate values even in most difficult
locations.
WIDE RANGE OF APPLICATIONS
The built-in 15kV and 4kVA high voltage high power source
is unique. The 15kV output voltage (MIDAS 288xG) together
with the mobile resonating inductor 5289 allows the testing
of generators with 25kV nominal voltage according to IEC
60034.
The powerful supply and measuring capabilities make sure
that you can test even the biggest class of power
transformers in shortest time.
The optional add-ons “ Transformer Turns Ratio Meter” and
“Frequency Response Analyser” are important additional
diagnostic tools for power transformer diagnosis.
They can help to detect faulty transformer windings,
defective tap changer positions and mechanical failures and
displacements in the winding structure. For related technical
data see flyers TTR2795 and FRA5310.
Furthermore measurements can be carried out on solid
insulation such as cables, distribution-, voltage & current-
transformers, motors, bushings, capacitors, etc.
With the optional test cell 6835 all kinds of liquid insulation
samples can be tested as well.
TEMPERATURE CORRECTION
Built-in temperature correction curves for different insulation
materials are used to recalculate the measured results to
reference conditions (20°C, 68°F). The method of correction is
depending on the type of insulation and the relevant
standard, and the predefined set of curves can be easily
expanded or changed by the user.
REPORTING AND DATA HANDLING
All measurement results and test object data are saved in
XML and CSV, which allow an easy transfer to database
applications, MS WordTM, MS ExcelTM, MS AccessTM,
MS PowerPointTM or even a simple text editor. Printing of
the test reports can be done directly or after transferring
the data to a PC using the Ethernet interface or a USB
memory stick.
CONDITION BASED MAINTENANCE
Gaining knowledge about asset (medium- and high voltage
equipment) performance from condition measurements
(e.g. tan values) with the help of a database and
experienced personal are essential for the implementation
of a risk strategy. Large-scale development of knowledge
rules to support decisions about asset endurance, is
possible with knowledge based platforms e.g. “ksandr”, a
mutually applied expert database, designed for the
collection of local condition measurements, generates
decision rules based upon a lager population than just the
local user. Membership to this non-profit, independent
organisation is open to all willing to share data and
experience regarding asset performance.
Component view screen for tan values in the iCore©
database of the “ksandr” platform which is supported by Delft
University of Technology. See also www.ksandr.org