The Schleich MTC2 R7 is the latest in high-end devices for testing windings, coils and armatures.
The MTC2 R7 comes ready for instant measurement. After a few motor parameters have been entered, the test can start. Either an autotest can be performed based on the entered motor parameters or a user-defined test sequence can be initiated.
Virtually all motor data including a picture can be stored. This simplifies the retrieval of motor data and the corresponding measurement results. The motor data are also printed directly on the SCHLEICH standard protocol in connection with the measurement results.
 
The test methods:
Resistance test
Inductance test
Capacity test
Insulation resistance test
Insulation resistance test PI /DAR
High voltage test DC
Step voltage test
High voltage test AC
Surge voltage test
Partial discharge test at surge voltage (conforms to standard)
Rotating field test
 
Automatic test method switching
After connecting the device under test, the MTC2 R7 automatically tests on all 5 clamps. Thanks to the integrated test method switching, you no longer have to reconnect any connections by hand. This saves time and avoids errors.
Do you usually always need more than 4 measuring connections, e.g. to contact additional sensors or unconnected devices under test? Then an extension of the MTC2 R7 to a total of 8 measuring connections + frame is possible.
 
5 test leads give you the possibility to contact all relevant winding connections at once. The 3 phase connections as well as the star point (if available and accessible) are connected with 4 test leads. The fourth test connection at the star point gives you a unique increase in test accuracy. The fifth test connection is connected to the stator/motor housing. It is required for the insulation test between the winding and the laminated core.
 
The surge voltage test
The surge voltage with standard-compliant edge steepness leaves no fault undetected. Modern automatic evaluations facilitate the subsequent fault analysis for you.
The MTC2 R7 features surge voltage testing with a pulse frequency of up to 50 Hz. This results in a considerable decrease in test cycle time, which is particularly advantageous in combination with the partial discharge inception voltage measurement (RPDIV). (optional extension).
 
Partial discharge test with surge voltage
The standard-compliant PD test can also be integrated. It gives you information about critical insulation weaknesses and the suitability for operation with frequency converters. Here SCHLEICH pursues two strategies to obtain good measurement results: both on the stator and on the fully assembled motor:
Motors are measured with a coupler in the test lead.
Stators are measured using an antenna.
Until now, the partial discharge inception voltage measurement was a particularly time-consuming test. For a 3-phase device under test, for example, this could take 8.5 minutes (depending on the parameterization of the test steps). With the new, patented surge voltage test of the MTC2 R7, it is possible to reduce test duration by approx. 75 % (with the same parameterization of the test steps). (optional extension)
 
Insulation resistance test
To achieve highly accurate measurement results for your resistance measurement comparison between the 3 phases, the resistance test is performed using four-wire technology. This automatically compensates for the resistances in the test leads. In addition, the MTC2 R7 detects the room temperature to compensate for any temperature influence. The resistance test including temperature compensation is always a part of the MTC2 R7.
By using SCHLEICH Kelvin clamps, compensation of the contact resistances at the clamping points to the winding is ensured. Only in this manner resistances of less than 10 Ω can be measured with high precision.
 
Software
The new software is based on the latest .Net technology and has been completely redesigned. The MTC2 R7 features modern and clear views that enable intuitive operation. To ensure operation via touch during mobile use or in the workshop, a variety of settings can be displayed enlarged. Coupled with a big touch keyboard, the software allows operation even without mouse and keyboard.