Download stators test system

industry.loccioni.com
STATORS
TEST SYSTEM
Via Fiume 16
60030 Angeli di Rosora, Ancona, Italy
p +39 0731 8161 f +39 0731 814700
[email protected] - www.loccioni.com
SOLUTIONS FOR ELECTRIC MOTORS
Motor drive systems are a very important component in many industrial
applications, and one of the most critical component of these systems
is the stator, which is also one of the main source for motor drives failures.
It is for that reason, and to face the growing request for testing on this
field, that Loccioni has developed a new test bench able to verify the
quality of stators, ensuring high flexibility of the system and accuracy
of measurements.
STATORS TEST SYSTEM
THE SYSTEM
Magnetic field test and rotation test.
The system is able to perform different kind
Hall sensors
>> 2 alternating stations in case of tight
cycle time demand
of tests, and could be adapted to customer
>> Magnetic field range: +/- 400 G
>> Manual laoding/unloading
requirements also by the integration of
>> Supply voltage -0.5/+18 VDC
>> Fully automatic loading/unloading
a conveyor and/or automatic loading/
>> Sensibility: 3.75 Mv/G
>> Integration into new or existing
unloading automated equipment
manufacturing lines
The test is performed thanks to an array of
Surge test
>> Output pulse voltage: 500-5000 V; 3%;
+/- 10 V
of the stator and uniformly distributed
throughout the angular extent at cross axis
>> Sampling frequency 100MHz
of the reed valve. The positioning system of
>> The test is repeated several times,
the piece ensures the perfect alignment of
according cycle time available,
the array of sensors relative to the axis of
in one single direction or both
the hollow stator and also the positioning
directions of polarity
of the sensors in correspondence of the
>> The test result can be calculated on
>> Any other option is available on request
Hall sensors positioned in the hollow interior
transverse axis of the piece thanks to a
the base of one of two parameters
system of axial movement. During the
described below and automatically
test voltage values , proportional to the
calculated by the instrumentation:
magnetic field present at each hall sensor,
-area under the waveform
are acquired. The acquisition is carried out
-comparison of the area under the
just before powering the main winding, and
waveform between master stator and
then only the secondary winding. The main
stator under test.
test is separated in two different sub-test:
rotation test and magnetic field test. Before
It is also possible to obtain an assessment
the rotation test, the device check if the
of possible phenomena of partial
winding is broken. In this case the tests are
discharges: in the process of testing at
not performed. After, if the first test detect a
high voltage pulses, the testing coil can
defect, the second test is not executed.
lead to the discharge point due to damage
The test is performed to detect the defects
materials, thereby generating corona
listed below:
discharges in the discharge curves.
1.The stator test system
>> Rotation error
The rotation test can individuate eventual
Hi pot
>> Dielectric Strength Test as required by
the electrical safety testing standards
error in the position of the poles of each
winding, that could be the cause of a
wrong rotation of the motor after the
assembling with the rotor.
Ambient temperature measurement
for the compensation to resistance test
2.Automatic Terminals Release
>> Main/auxiliary winding defects
The magnetic field test highlights
the presence of a shorter winding,
Winding resistance check
>> Temperature compensation at 25°C
interrupted or eventual random defects
in the field distribution.
>> Accuracy +/- 0.5 %
>> Temperature coefficient ≤0.01% /°C
The system can be configured according
the customer requirements:
>> 1 single test station
3. User-friendly Interface for the Machine Software