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Testing Equipment & Laboratory
Professional test instruments for medium & high voltage VFD performance inspection
Professional Testing Laboratory
SUNSIN has built a complete professional testing laboratory equipped with full sets of inspection instruments. We can complete high voltage withstand, full-load aging, temperature rise, harmonic, protection function and environmental adaptability tests for three-level medium and high voltage inverters.
All finished products pass strict testing before delivery to guarantee stable operation in mining, marine, oil & gas and other harsh industrial scenarios.


Full Load Aging Platform
Long-time continuous loading test for whole inverter cabinet.

High Voltage Withstand Tester
Insulation and high-pressure leakage protection test.

DC Power Supply
Temperature cycling test for harsh working environment.

Power Quality Analyzer
Test harmonic, power factor and efficiency data.

Surge Impact Tester
Anti-lightning surge and impulse voltage test.

Vibration Test Bench
Anti-vibration test for marine & mining VFD.

Protection Function Tester
Over-current, over-voltage, over-temperature protection test.

Power Unit Test Bench
Separate performance test for each power unit module.