Atec DX User Manual
Technical speci cations and product description
SKF Static Motor Analyzer
Baker DX
The SKF Static Motor Analyzer Baker DX unit offers more capabilities
to analyze all insulation and motor circuits in AC and DC motors, generators and coils. These instruments offer Insulation Resistance (IR),
Polarization Index (PI), Dielectric Absorption (DA), DC HiPot/Step
Voltage and Surge tests to evaluate all the insulation in motors and
coils. The motor circuit can also be analyzed utilizing Resistance,
Impedance, Capacitance, Phase Angle and Dissipation Factor/Quality
Factor measurements.
DX capabilities and added flexibility
Low voltage testing has been added to the Baker DX. This allows for
a more complete testing solution for predictive maintenance or shop
quality management. The low voltage tests can supply up to 600 mA
and frequencies from 50 to 4 000 Hz.
The Baker DX also offers a modular design that allows you to configure a DX with only the test capabilities needed for your specific
application. For example, it can be only a high voltage or a low voltage tester or you can add all the capability to have a unit that has
both high voltage and low voltage testing capabilities in one unit.
Simply configure the instrument to best fit the application in which it
will be used.
Baker DX benefits
4 to 40 kV voltage testing capability to test fractional HP motors to
40 megawatt generators
High and low voltage testing capability in one unit to test the
motor circuit and all the insulation
Intuitive graphical user interface with touch screen
USB printer interface to quickly print results
Coil mode – quickly analyze coils and store all data
Impulse mode allows the operator to quickly apply voltage when
testing coils and DC motors
Fully test DC motors, including bar to bar armature testing
Push to Test (PTT) lock to hold voltage during DC tests
Modular design to meet your testing needs
Internal test storage capacity – 2 GB
The Baker DX is the smallest, lightest 12 kV surge tester on the
market
Tests and capabilities of the Baker DX unit.
Table 1
Failure modes
Weak insulation turn-turn X
Weak insulation phase-phase X
Weak insulation coil-coil X
Turn-turn shorts X X X X X X
Phase-phase shorts X X X X X X
Coils-coils shorts X X X X X X
Open coils X X X X X X
Reversed coils X X X X X
Unbalanced phases X X X X X X
Weak ground wall insulation X X X X
Dirty windings X X X X X
Moisture X X X X X
Feeder cables X X X X X
Motor lead line connections X
Winding
resistance
IR test
DA/PI
test
DC step
voltageDCHiPot
Surge Inductance Capacitance Impedance
Phase
angle
Coil testing
The Baker DX unit is among the first on the market to have specific
coil testing software. The Baker DX unit can be placed into an
impulse mode for quick application of voltage to the coils. The software can store and display up to 200 waveforms on the screen for
quick analysis of coil condition. Utilize SKF’s Error Area Ratio (EAR)
method to calculate the differences between the coils for quick, accurate analysis of the data. The EAR calculation greatly reduces operator error and automatically indicates a defective coil when the result
is out of the programmed tolerance level. Report and analyze your
data easily with bar charts to help locate and report faulty coils, and
for an at-a-glance summary of all coils tested.
Testing a coil utilizing the Baker DX.
Flexible modular design
D/Q
Operator interface and operation
The 12,7 × 17,0 cm (5.0 × 6.7 in.) touch and color display is an
industrial, ruggedized touch screen to handle the rough operation of
daily industrial use.
The operator interface has been developed with large icons for
easy touch operation, even with electrical gloves. The interface is
designed with a left-to-right flow to reduce the number of touches
and is intuitive and easy to operate. The software will automatically
prompt the operator to save the data if the save button is not
selected, reducing the possibility of lost data.
Hardware and software
The Baker DX can be built specifically to fit your needs. The unit can
be configured to only perform the surge and DC tests, or you can add
the resistance test. If you would like the ability to perform all available tests, add the Inductance, Impedance, Phase Angle and Capacitance tests to take advantage of one of the most comprehensive
motor analyzers on the market. The Baker DX is available in a 4, 6 or
12 kV unit. The 6 and 12 kV units can also be configured in a high
output (HO) version to supply additional energy when surge testing
to properly test larger HP motors. If higher voltage is needed, any of
these units can act as a host for a Baker PP24, 30 or 40 kV power
pack. DC motors can also be tested with the Baker DX by utilizing the
AT101 ZTX or adding a span testing fixture.
RLC measurements screen.Testing individual coils within the stator.Coil testing screen.
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