Atec MIDAS-288x User Manual
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MIDAS
Mobile Insulation Diagnosis & Analysing System
Periodic maintenance
and inspection of high
voltage insulation losses is
performed on power
transformers, bushings,
motors, generators, etc.
The MIDAS is a valuable tool
for such measurements
especially in the harsh
electrical environments
experienced in substations
and other field locations.
Designed for testing at local
power-line frequency (50Hz
or 60Hz), MIDAS
automatically measures and
records dissipation factor
(tan), power factor (cos)
and all other relevant values
of impedances (capacitive,
inductive and resistive).
Damage or changes in the
insulation material are
detected rapidly and reliably.
Furthermore the optional
build-in 3-phase Transformer
Turns Ratio Meter and/or
Frequency Response
Analyser help to detect faulty
transformer windings as well
as defective tap positions.
The rugged construction and large pneumatic wheels make
transportation and access to remote locations easy.
A large touch sensitive, sunlight readable colour display and
the graphical user interface create a highly visual
environment with clear illustration of the instrument’s
advanced measuring and analysing features.
Predefined test sequences linked with limiting values (e.g.
previous measurements) guide the user automatically
through the test sequence and allow obtaining a first
assessment result on-site.
Built-in standard interfaces (USB, Ethernet) enable easy data
exchange with a host computer for data collecting, reporting,
printouts, statistics and advanced analysis.
FEATURES
To analyze the condition and quality of high voltage
insulation, the system performs automated measurement of:
Dissipation Factor (tan ) and Power Factor (cos )
Short Circuit Impedance and Excitation Current
Additional measuring capabilities like Capacitance,
Quality Factor, Frequency, Voltage, Current, Power,
Losses, Impedance, Inductance, Reactance, Spectrum
Analyzer, Digital Scope and Data Logger
Frequency Response Analysis (optional; built-in or
external remote controlled unit)
Turns ratio, voltage ratio, phase displacement
(optional; built-in or external remote controlled unit)
Trending Analysis function – get a first graphical on-site
assessment
Manual and Automatic (Sequencer) test operation.
Built-in high voltage supply up to 15kV, 4kVA
Built-in, long-term stable standard capacitor
Rugged, reliable and safe construction
State-of-the-art integrated PC running actual Windows
platform with advanced user interface
BENEFITS
Shortest Measuring Time
Shortest equipment set-up and measuring time by an “all in
one” unit. High output power allows testing of biggest class
power transformers in shortest time.
Easy to operate
Self-explanatory user interface with a large graphical colour
TFT touch screen. Manual and Automatic test operation.
Software assisted test planning, preparation, execution and
first assessment.
Highest Accuracy
Highest accuracy in field-testing using latest measuring
techniques as well as highest long-term stability of system
accuracy by using a gas-insulated standard capacitor as
internal reference arm and self-calibrating measurement
sensors.
Advanced interference suppression
Advanced interference suppression (patented) allows
measurement at local power-line frequency as recommended
in the related standard IEEE/ANSI 57.12.90
a brand of
Haefely has a policy of continuous product improvement. Therefore we reserve the right t o change design and specification without notice. LL_MIDAS288x_0711_LW - 1/6
Haefely is a subsidiary
of Hubbell Incorporated.
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APPLICATIONS
Power Transformers
Distribution Transformers
Instrument Transformers
Rotating Machines
Liquid Insulation
Bushings
Cables
Capacitors
Circuit Breakers
Surge Arrestors
HANDY MECHANICAL DESIGN
Rugged construction and large pneumatic wheels are an
advantage for transportation in the back of a van and when
measurements must be made in remote hard to access
locations.
A powerful data management allows for an easy and
fast trending and comparison analysis. Condition Based
Maintenance gets a new quality.
The automatic report generator minimises the time to
complete the test procedure.
The integrated online help supports the user during the
test procedure.
EASY TO OPERATE
MIDAS software incorporates much of our and our
customers’ experiences in the test business. We designed a
very easy to operate and understand, self-explanatory
graphical user interface. Together with the large colour
display and the touch
screen you can handle
test planning,
preparation, execution
and first assessment
with just a fingertip. It
also means the test
equipment is sealed
against environmental
influences.
Large TFT display with
touch-screen interface
Test system packed in the back of a station wagon
Easy one-man transportation and loading with the
integrated handles. Another great feature of this all-in-onepiece design is the shortest measuring set-up time you
can get on the market.
LATEST TECHNOLOGY
The development is based on the latest measurement and
electronics technologies.
Conventional techniques like mechanical driven
compensation is replaced by real-time electronic
compensation. This is realized by using advanced high-
speed data bus technology and powerful software
algorithms.
Predefined test sequences for transformer, bushings,
generators, cables, etc. together with two measuring
inputs reduce set-up and test time and minimize wiring
and re-wiring errors.
An integrated PC running under embedded Windows
TM
gives you the most powerful tool in the field to
XP
make sure you get your maintenance job done fast and
accurate.
The large colour TFT sunlight readable display with
touch screen interface, designed for outdoor use
allows having a clear and easy presentation of all values,
settings and operations.
a brand of
MANUAL AND AUTOMATIC
The manual test mode provides quick measurements without
lots of definitions or pre-settings while the automatic tests in
“Sequence mode” provide complete automated test
sequences. This powerful software efficiently performs for
field-testing from set-up to sequence definition to automatic
operation to a first on-site assessment to the final report.
Haefely is a subsidiary
of Hubbell Incorporated.
Haefely has a policy of continuous product improvement. Therefore we reserve the right t o change design and specification without notice. LL_MIDAS288x_0711_LW - 2/6
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