Motor Stator testing system MICROTEST MT-6913 (13 channel)

Price: Contact

Model MT-6913 / MT-6913L
Manufacturer MICROTEST
Power supply 90-132Vac or 198-264Vac
Weight N/A
Size N/A
Condition Stocking
Warranty 12 months

Motor Stator testing system MICROTEST MT-6913 (13 channel) integrates the Interlayer Short-Circuit Tester (6913), the High Voltage Withstand Tester (7605), and the LCR Tester (6365), with the 6913 serving as the main controller.

I. Specification of Engine Rotor testing machine  MICROTEST MT-6913 (13 kênh)

Motor Stator testing system MICROTEST MT-6913 capable of setting up all measurement parameters and provides 13 test channels. The external PC software allows for real-time data retrieval from the 6913, generating reports, or directly uploading test results to a database.

This all-in-one integrated system covers safety compliance, high-voltage insulation, and coil interlayer short-circuit testing for motor stators. It can measure motor stator polarity (rotation test) using precise four-wire resistance measurement technology.

Additionally, MICROTEST MT-6913 supports three-phase current balance testing (optional). The system can be equipped with PC connectivity software for data storage and can be configured with PLC control. Customized test fixtures can be provided for specific customer stators.

Furthermore, Motor Stator testing system MICROTEST MT-6913 offers an optional LCR Meter for measuring the stator's inductance values with a test frequency range of 10Hz to 200kHz, supporting three-phase balanced inductance testing.

  • 13 Channels
  • Hipot/Leakage Current
  • Insulation Resistance
  • Winding Layer short Test
  • Steering test
  • Inductance Test
  • It can test multiple sets of DUTs simultaneously
  • 4-Wire DC Resistance measurement will be more accurate than others
  • The Impulse/Surge with waveform comparison is a non-destructive analysis
  • Chinese/English screen could be switched arbitrarily.

II. Main function of Motor Stator testing system MICROTEST MT-6913 (13 channel)

Stator Coil/Core:

  • The purpose of Stator core is to be part of the magnetic route and the place to fix the Stator coil. This core is made of couple 0.5mm silicon steel sheets. To lower the magnetic loss, the core will cover by insulating paint to isolate each piece. There are couple sockets in the core to fix the Stator coil.
  • Stator coil is an important component of motor. The purpose is to create inductance by current. There are single layer and double layers on the iron core.

Motor-stator-testing-system-microtest-mt-6913-13-channel

Motor Stator test:

  • Uneven DCR happen in 3-phase motor, this will cause uneven rotate.
  • MICROTEST MT-6913 4-Wire DC Resistance measurement will be more accurate than others.
Motor-stator-testing-system-microtest-mt-6913-13-channel Motor-stator-testing-system-microtest-mt-6913-13-channel

Customized test fixture for Stator coil:

Motor-stator-testing-system-microtest-mt-6913-13-channel

For Enameled Winding of Motor:

  • Conduct coil’s quality issue.
  • Layer short between winding
  • Short on cross winding
  • Pin short
  • Insulation defect.

Motor Stator testing system MICROTEST MT-6913 is One-Step-Test Function: Low Voltage Electrical Test + Hipot Test  + Layer Short.

Motor-stator-testing-system-microtest-mt-6913-13-channel

Important Parameter for Quality of Coil:

  • Regular motor is winding on Silicon steel sheet
  • Prevent the electricity from enameled wire to motor
  • Put a insulation material on silicon steel sheet
  • Insulation paint on enameled wire
  • Short might happened while the current is passing the defect winging coil.

Motor-stator-testing-system-microtest-mt-6913-13-channel

Introduction of Impulse tester:

  • Impulse Winding Tester use the comparison of pulse to measure the DUT. The instrument provide high voltage to do the instant pulse test and record the wave. Compare with the golden sample to define the product.

Motor-stator-testing-system-microtest-mt-6913-13-channel

Why do we need impulse tester for producing motor/transformer?

  • Impulse Test = Quality and product life test
  • The small defection is hard to find at low voltage test station. As the DUT goes to the final assembly test, the defect may show up. This will higher the cost of production.
  • Motor and transformer usually work under high voltage. If we add impulse test in the product line, this may prevent the malfunction or burn on motor.

Motor-stator-testing-system-microtest-mt-6913-13-channel

  L

  Is the DUT coil

  C1, C2

  Are the resonant capacitors in the instrument

  R1, R2, R3

  Is the resistant in the instrument and the DUT

Technology of Detect Layer Short

→ 1

  Charge the C1 capacitor to the certain testing voltage level.

→ 2

  Trigger the SCR by pulse

→ 3

  DUT will resonate with C1 and C2

Motor-stator-testing-system-microtest-mt-6913-13-channel

Technology of Detect layer short:

“Pulse voltage and waveform comparison” is the way we detect layer short. The pulse voltage is non-destructive/instant voltage that apply on both side of winding and detect the DUT without damage it. By compare the wave with the golden sample, we can judge the DUT.

Damping wave under L/C resonate comes from the feature change of defect coil.

  • Inductance of coil
  • Q rate
  • Turn ratio of coil(voltage different)
  • Material of core
  • Layer short in the coil.

By comparing the wave of damping attenuation between golden sample and DUT:

Provides 5 waveform comparison:

  • Total area comparison
  • Differential area comparison
  • Wave comparison
  • Flat comparison
  • Corona comparison.

Motor-stator-testing-system-microtest-mt-6913-13-channel

Technical specifications of Motor Stator testing system MICROTEST MT-6917 (17 channel)

MICROTEST stator testing solution can be tailored into a complete testing system based on different requirements. Firstly, you can evaluate whether to opt for a rack-mounted or desktop configuration, as well as whether to incorporate PC connectivity.

System

Benchtop

Rack

He-thong-kiem-tra-stator-dong-co-microtest-mt-6913-13-kenh

He-thong-kiem-tra-stator-dong-co-microtest-mt-6913-13-kenh

 

Function

Operate directly on the instrument 

PC Link

Production Traceability Management – Implementing Bar Code/Label Printer/Laser Engraver

/

Store test file sets

100 sets (existing instruments)

Unlimited (according to PC memory)

Sharing test files between devices

Unable to share, recreate the file

Share through PC software

Accessing test data

/

Transfer test data to the PC via the RS-232 interface

Uploading test data to a cloud database

/

User Permission Management” or “User Access Control

/

Supports permission management, configuration through Engineering Mode

CPK Report

/

He-thong-kiem-tra-stator-dong-co-microtest-mt-6913-13-kenh

Customized CPK Report According to Customer Requirements

/

He-thong-kiem-tra-stator-dong-co-microtest-mt-6913-13-kenh

 

 Model

 MT-6917

 MT-6913

 MT-6913L

 MT-6910

 Test Channel

 17

13

 13

 DCR Range

 0.1mΩ-100kΩ

 0.1mΩ-100kΩ

 0.1mΩ-150Ω

 0.1mΩ-100kΩ

DCR Accuracy

Low Resistance
0.1mΩ-1Ω
±(0.2%±1mΩ)

Low Resistance
0.1mΩ-1Ω
±(0.2%±1mΩ)

Low Resistance
0.1mΩ-200mΩ
±(0.1%±0.5mΩ)

Low Resistance
0.1mΩ-1Ω
±(0.2%±1mΩ)

High Resistance
1Ω-100KΩ
±0.1%

High Resistance
1Ω-100KΩ
±0.1%

High Resistance
200mΩ-1Ω
±(0.1%±2mΩ
1Ω-150Ω
±0.5%

High Resistance
1Ω-100KΩ
±0.1%

 

Model

MT-6913 / MT-6913L

DC Resistance Test (6913)

DCR Range

0.1mΩ-100kΩ (MT-6913)

0.1mΩ-150Ω (MT-6913L)

Measuring Mode

4-Wire

Safety Hi pot Test (7605)

AC Output Voltage

100V-3000V

AC Leakage Current

0.001mA-10mA

AC Arcing Detection

Detect gears from 0-9

DC Output Voltage

100V-3000V

DC Leakage Current

0.001mA-5mA

DC Arcing Detection

Detect gears from 0-9

IR Output Voltage

100V-1000V

Insulation Resistance

1-9999MΩ

Measuring Time

0.1-99.9s Continuously adjustable

Voltage Accuracy

±(3% of setting+5V)

Impulse Winding Test (6917)

Impulse Voltage (programmable)

200V-3000V

Impulse Voltage Accuracy

±2%

Total area comparison

When layer short happened, the loss of power on coil increase, the resonance damping coefficient increase, resonance amplitude decrease, the total area decrease. These are the basic parameters we check layer short.
By calculating and comparing the deference of area between golden sample and DUT.
Show by percentage
Analysis the power loss by this data.

Differential area comparison

Add up the difference between normal wave and DUT wave call “ Area differential”.
When layer short happened, the inductance reduce(similar the transformer). The wave phase change and the area differential also change. This will show “fail” on the instrument.
However, the parameter might cause deviation because of the deviation of inductance, resonance phase shift. (Silicon steel product such as motor and traditional transformer is not suitable)

By calculating and comparing the deference of area between golden sample and DUT. To determine the degree of waveform overlap.
Compare the inductance by this.

Wave comparison

Set a acceptable wave range, if the DUT’s wave is in this range shows “pass” otherwise, “fail”
This parameter can judge both amplitude and phase of resonance wave. This can increase the detection capability of layer short.

Corona comparison

In pulse test, the insulation defect will cause discharge and create corona. This function is able to count the times that corona happened base on the degree of deviation.
Detect the discharge phenomenon on the coil.

Flat comparison

If the layer short happened, the waveform will tremble. Therefore, the instrument will quantize and compared it.

Inductance Measurement (Option LCR Meter 6365)

Inductance Ranges

0.1nH – 99.999KH

Test Frequency

10Hz-200kHz

Frequency Output Accuracy

±0.01%

Frequency Resolution

5 Digits

AC Drive Level

10mV to 2Vrms (1m Vrms resolution)

Basic Accuracy

±0.1%

Three-phase Inductance Balance Test

Comparison Mode

 – The absolute value of the difference between the two sets of coil inductance
 – The ratio of the absolute value of the difference between the two sets of coil inductance to the standard value
  – The ratio of the absolute value of the difference between the inductance of the two sets of coils and the average value of the measured resistance of the three sets of coils

 

System:

Test fixture

According to the test requirements

Indicator

Pass/Fail Screen Diaplay/Sound

Built-in Storage

Storage of 100 rewritable data sets

Operation

Manual, RS-232

Power Supply

Voltage

90-132Vac or 198-264Vac

Frequency

50/60Hz

Power consumption

300VA

Environment

Temperature

10℃-40℃

Humidity

20-90%RH

Display

6913/6913L

5.7″ dot-matrix display (320*240)

7605

4.3″ TFT LCD (480*272)

6365

7.0″ TFT (800*480)

Dimension (W*H*D)

6913/6913L

435x190x522mm

7605

435x145x522mm

6365

435x145x522mm

Weight

6913/6913L

15 Kg

7605

14 Kg

6365

3 Kg

Interface

RS-232

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