Atec 2883 User Manual

2883 MIDAS micro

Mobile Insulation Diagnosis & Analysing System

 The MIDAS micro 2883 is the smallest and most

compact insulation diagnosis set on the market.
The weight of only 25 kg / 55 lbs and the one box
design makes it the ideal tool for power / dissipation
factor / tan δ and capacitance testing in the field
and in the factory.

State-of-the art electronic design, advanced digital
filtering and sophisticated calculation algorithms
ensure highly stable results even under adverse
conditions.

The three main operating modes offer the user a
choice. For quick and straight-forward
measurements the basic mode is used, where only
the essential information is shown. For advanced
tests such as variable frequency or voltage (tip up)
measurements the guide mode is available. The
user is guided through the measurements with
safety and connection instructions shown on the
colour touch screen. And the advanced mode offers
additional flexibility for special test sequences.

The MIDAS micro 2883 is completed with extensive
safety features. Hand and foot interlock switches,
easily accessible emergency stop button and built
in safety checks ensure safe operation under all
circumstances.

FEATURES AND BENEFITS

 Capacitance, dissipation / power factor testing

 Compact one-box design with only 25 kg / 55 lb

 12 kV high voltage source

 Variable frequency 15 – 400 Hz

 Accuracy of 0.3% (capacitance) and 1x10

-4

(tan )

 Safe operation with interlock, emergency stop, safety

checks and HV ground surveillance

 7” color touch screen for easy operation

 Three operating modes: basic, guide, advanced

APPLICATIONS

Capacitance and power / dissipation factor testing of:

Power Transformers

Instrument Transformers

Bushings

Capacitors

Circuit Breakers

Surge Arrestors

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ONE BOX – RUGGED AND EASY TO
TRANSPORT

The complete instrument is built in one ruggedized
case and has a total weight of only 25 kg / 55 lb. With
the integrated casters transportation
is convenient and test objects in
remote locations can be reached
easily.

The MIDAS micro 2883 has run
through extensive type testing to
simulate the rough environment a
product can face during its
lifetime. Fulfilling the MIL-STD­810G standard, MIDAS micro
2883 assures you the highest
quality and reliability in
operation.

Included are a variety of
accessories all packed in a
robust transportation bag which
can be attached to the case.
The measurement and high voltage
cables are rolled on cable drums which make
connection and storing convenient and quick.

RELIABLE RESULTS - ALWAYS

ccurate measurements in substations can be difficult
because of strong electrical fields generated by high
voltage transmission lines. The MIDAS micro detects
that interference is present and switches to the
appropriate noise suppression mode, if necessary.

State-of-the-art digital signal processing is used to filte
out the interfering signals. This results in stable and
repeatable values under all conditions.

SAFE OPERATION

The MIDAS micro 2883 includes several features that
ensure safety of the personnel and material. It is
equipped with an open ground detection which allows
high voltage to be switched on only when a prope
ground connection has been made to the unit. In
addition to an emergency stop button, the unit is
equipped with an external dead-man type safety switch
which must be held down prior to testing to allow fo
high voltage to be turned on. The warning sound and a
warning lamp bar located on the top side of the display
provide visual and audible warning signals. Additionally
an external optional strobe light can be connected.

THE FEATURES YOU NEED

The instrument includes all the features needed to perform
tests on various high voltage components. The 12 kV
voltage source delivers a clean signal, independent of the
mains. The variable frequency source (15 – 400 Hz)
allows for advanced measurements such as bushing
analysis over a frequency range. A gas filled standard
capacitor is used as an internal reference. This
guarantees repeatable results and long term stability. With
the USB interface and integrated thermal printer, reporting
of results is easy.

QUICKLY TO THE RESULTS YOU WANT

Three operating modes
are built in, to suit your
needs. Use the basic
mode for quick and
straight forward
measurements where
only essential displays
and controls are shown.
Or allow the Guide Mode to
walk you through the
measurements - from basic insulation diagnosis to
advanced tip-up and variable frequency bushing analysis.
The advanced mode offers even greater flexibility for
special test sequences.

THE PERFECT COUPLE FOR TRANSFORMER
TESTING

Combine the MIDAS micro 2883 with the Winding

nalyzer 2293 for an entire test solution on transformers.
With 2293 tests like winding resistance, transformer turns
ratio and magnetic balance measurements can be done
with one single connection. Compatible file formats allo
data exchange between the two units and measurements
results are combined for further analysis or processing.

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TECHNICAL SPECIFICATIONS

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(Zx)

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Dimensions

Size 54.6 x 34.7 x 24.7 cm (21.5” x 13.66” x 9.72”)

Weight

Instrument 24.9 kg (single case) (55 lb)
Cable / Accessory Bag 16.2 kg (35.7 lb)

Environment

Operating Temperature -10 .. 50°C (14..122° F)
Storage Temperature -20 .. 70°C (-4..158° F)
Relative Humidity 5 .. 95 % r.h. non-condensing

Standards

Safety IEC 61010-1 (2010) EN 61010-1:2001(ZEK 01.4-08)

EMC EN 61000-3-2 (2006) EN 61000-3-3 (2008) EN 61000-4-2 (2009)

EN 61000-4-3 (2010) EN 61000-4-4 (2004) EN 61000-4-5 (2006)
EN 61000-4-6 (2007) EN 61000-4-11(2004) EN 55011 +A1(2009)

Drop Test IEC 60068-2-31 Edition 4.0 (face, corner, free fall)
Shock & Vibration IEC 60068-2-64 Edition 2.0 IEC 60068-2-27 MIL-STD-810G
Aging Cycle MIL-T-28800

Inputs
Powe
Measurement ≤ 180 mA

90 .. 264 VAC 50/60 Hz, 800 W, active PFC (acc. IEC61000-3-2)

RMS

Output
Voltage 100 .. 12’000 V

(@ 45 .. 70 Hz)

RMS

Frequency 15 .. 400 Hz (Voltage ≤ 5 kV)
Current ± 180 mA
DUT Capacitance max. 47 nF @ 12 kV

Measurement Resolution
Dissipation / Power Facto

tan / cos 

0.0001 ± 0.5 % rdg ± 0.0001

0.01 % ± 0.01 % rdg ± 0.5 % @ 50..60Hz

RMS

@ 50 Hz, max. 39 nF @ 12 kV

RMS

@ 60 Hz

RMS

ccuracy

@ 50..60Hz

Capacitance 0.01 pF ± 0.3 % rdg ± 0.3 pF
Test Voltage 1 V ± 0.3 % rdg ± 1V
Test Current 0.1 μA ± 0.3 % rdg ± 1 μA
Watts / Power 0.1 mW, mVA, mVAR ± 0.8 % rdg ± 1 mW, mVA, mVAR
Quality Factor 0.0001 ± 0.5 % rdg ±0.0001
Internal Reference 100 pF Reference Capacitance, tan < 0.00001

Temperature coefficient < 0.01 % / K, Capacitance ageing < 0.01 % / yea

Safety Features Open Ground Detection

Security handheld switch, foot switch (optional)
internal warning indicator, external warning lamp (optional)
audible warnin

Interfaces USB 2.0 for Memory Stick, Ethernet, Thermal Printe

signal

Display 7” TFT , 800 x 480, Colour Touch Screen
Data Formats XML, CSV
Record Values DF (tan 

PF (cos ) PF (cos )

DF

tan

DF%

20°C

PF%(cos

20°C

tan

DF%

) PF%(cos )

tan

20°C

Capacitance Cx Resistance Rx Inductance Lx Frequency f
Test Current Ix Mains frequency fmNoise frequency fn Apparent Power S
Real Power P Reactive Power Q S/N Ratio Quality Factor QF
Ref Current In Capacitance Cn Current Imag (Lp
Phase-angle
Conditions
Settings

Comments Connection mode Time/Date

Volta

e U

Insulation Temp. Temp.Corr.Factor K

RMS

Current Ife (Rp

Calibration Interval 2 years recommended

20°C

3 / 4

SCOPE OF SUPPLY

K

Measuring instrument MIDAS micro 2883 built in



rugged case with casters

Rugged transportation bag including:



 High voltage cable, 20 m / 65 ft with clamp
 3 shielded measuring cables with clamps, 20 m

/ 65 ft

 High voltage ground cable with clamp
 2 cable drums
 Safety interlock hand switch, 10 m / 32 ft
 2 mini clamps with cables
 3 bushing tap adapters 4 mm
 Extension clamp
 Operating Manual

Calibration Certificate with test results



ACCESSORIES AND OPTIONS

2883/SAFE

Safety Strobe Light with magnetic
base (e.g. for mounting on a
transformer tank), providing visual
warning of high voltage presence.

MIDAS Office

Software for offline analysis of
measurement data and creation of
customized test sequences

2283/FS interlock foot switch

288x TEMP

288x TEMP2

2283/WE2 and WE3

OFFICES:

Europe

Haefely Test AG
Birsstrasse 300
4052 Basel
Switzerland
 + 41 61 373 4111
 + 41 61 373 4912
 [e-mail]

HAEFELY HIPOTRONICS has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice.

Foot operated interlock switch as
alternative to the included hand switch

Temperature probe for surface mount
(magnetic), 10 m cable

Laser infrared, contact-less thermo /
hygrometer. For determination of tank
(oil) temperature, air temperature and
air humidity.

Warranty extension to two years (WE2)
or three years (WE3). Standard
warranty is 1 year.

China

Haefely Test AG Representative Beijing Office

8-1-602, Fortune Street

No. 67, Chaoyang Road, Chaoyang District

Beijing, China 100025

 + 86 10 8578 8099

 + 86 10 8578 9908

 [e-mail]

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2283/HOO

Hook for high voltage connection

2883/HCB

2883/ALB

6835 Oil test cell

(instead of included clamp)

Set of flexible bands for hot collar tests
or for guarding of leakage currents

Adapter cable for standard capacitors
(Lemo3 – BNC), i.e. Tettex type
3370 NK

Test cell for on-site measurements on
liquid insulation samples, max. 10kV

Brewster, NY 10509

 + 1 845 279 3644

 + 1 845 279 2467

 [e-mail]

North America

Hipotronics, Inc.

1650 Route 22 N

United States