MICROTEST 3-in-1 Transformer Integrated Test System is a comprehensive solution that combines low-voltage electrical characteristics testing and safety compliance testing/Impulse Winding testing. It offers 20 testing channels and integrates low-voltage testing (including inductance, leakage inductance, resistance, capacitance, etc.) with AC/DC withstand voltage insulation testing (up to 5000V/6000V). It ensures efficient and convenient testing for transformer products. The impulse winding test uses non-destructive high-voltage pulse testing technology. It analyzes the damping attenuation waveform generated by L/C resonance to detect short-circuit defects between transformer coils or insulation layers.
To measure the inductance value of a transformer, you can use an LCR meter, which offers selectable test frequencies including 200kHz, 500kHz, and 1MHz. It supports software that allows connection to a PC, enabling the storage of test data.
SPEC
Model |
3-in-1 (626X+7605+7721) |
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Test Channel |
20 |
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Low Voltage Electrical Test | ||||||
Model | 6265 | 6266 | 6267 | |||
Frequency | 10Hz-200kHz | 10Hz-500kHz | 10Hz-1MHz | |||
Frequency Resolution | 5 digits | |||||
Basic Accuracy | ±0.1% | |||||
AC Drive Level | 10mV-2Vrms | |||||
DC Drive Level | 10mV-2V | |||||
Output Impedance | 100Ω | |||||
Turn |
Inductance or Voltage Test Freqeuncy:50Hz-200kHz |
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Test Mode | Meter Mode / List Mode | |||||
Parameters Measurement | Inductance (L)、Impedance (Z)、Capacitance (C)、Resistance (R)、Conductance (G)、Susceptance (B)、Admittance (Y)、Alternating Current Resistance (ACR)、Quality Factor (Q)、θ、Direct Current Resistance (DCR)、Leakage Inductance、Turn Ratio、Balance、Short Circuit | |||||
L, LK | 0.1nH ~ 9999.99H | |||||
C | 0.00001pF ~ 999.99mF | |||||
Q,D | 0.00001 ~ 99999 | |||||
Z,X,R | 0.00001Ω ~ 99.9999MΩ | |||||
Y | 0.01nS ~ 99.9999S | |||||
θ | -180°~ +180° | |||||
DCR | 0.1mΩ ~ 99.999 MΩ | |||||
Turn | 0.1 ~ 99999.9 turns | |||||
Pin-Short | 12 pairs, between pin to pin | |||||
Hi pot/ Insulation Test | ||||||
Items | AC Hi pot | DC Hi pot | IR | |||
Output Voltage | 10V-5000V | 10V-6000V | 10V-1000V | |||
Voltage Resolution | 1V | 1V | 1V | |||
Voltage Accuracy | ||||||
Test Range | 0.001-31mA | 0.001-11mA | 1-12000MΩ | |||
AC Arcing Detection | 0-20 | 0-10 | - | |||
Measuring time | 0.1-999s | |||||
Ramp Time | 0.1-10s | |||||
Time Resolution | 0.1s | |||||
Impulse Test | ||||||
Impulse Voltage | 200V-5000V | |||||
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. |
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Area Differential |
Add up the difference between normal wave and DUT wave call “ Area differential”. By calculating and comparing the deference of area between golden sample and DUT. To determine the degree of waveform overlap. |
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Waveform Comparison |
Set a acceptable wave range, if the DUT’s wave is in this range shows “pass” otherwise, “fail” |
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Corona | 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. |
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Flat |
If the layer short happened, the waveform will tremble. Therefore, the instrument will quantize and compared it. |
System
Model | Transformer Tester | Impulse Tester | Hi pot Tester |
6265/6266/6267 | 7721 | 7605 | |
Built-in stroage |
128 sets | 200 sets | - |
Power Supply |
Voltage 98Vac-132Vac or 195Vac-264Vac |
Voltage 115/230Vac±15%
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Voltage 98Vac-132Vac or 195Vac-264Vac |
Frequency:47-63Hz | Frequency:50/60Hz±5% | Frequency:47-63Hz | |
Power consumption |
600VA/set | ||
Dimension (W*H*D) |
344x145x343 mm (W*H*D) | 435x190x522 mm | 435x145x500 mm (W*H*D) |
Weight | 9 Kg | 14kg | 15kg |
Interface | RS-232、Handler、LAN、USB Host、EXT. I/O | RS-232、Remote、Printer | RS-232、Remote、USB Host、USB Device、EXT.I/O |
Displa | Color Screen, 7" TFT (800*480) |
5.7" TFT (320*240) |
Color Screen, 4.3" TFT (480*272) |