STD Transformer

Tests

Testing Procedures

All our transformers are tested in internationally accredited laboratories according to IEC 60076 standards. Each unit is delivered with a maintenance manual, test report, technical drawings, and all necessary certifications.

Our facility is equipped with fully calibrated test equipment. Without exception, all required intermediate and routine tests are conducted in our laboratory to ensure compliance with the guaranteed values requested by our customers. Only after the successful completion of routine tests is the transformer approved for shipment.

During shipment, the maintenance manual, test report, technical drawings, and all required documentation are provided to the customer. Additionally, as an accredited laboratory, we can perform temperature rise, lightning impulse, sound level, dielectric, type, and special tests upon customer request.

We conduct all routine tests without exception. Our test room is equipped with a specialized converter capable of handling frequencies from 50 Hz to 400 Hz and providing up to 12,000V at 400A.

Tests Conducted by Our ISO 17025 Accredited Laboratory (Accredited by TÜRKAK)

Routine Tests
  • Measurement of Winding Resistance
  • Measurement of Voltage Transformation Ratio and Phase Difference Check
  • Measurement of Short-Circuit Impedance and Load Loss
  • Measurement of No-Load Loss and Current
  • Inspection of Core and Body Insulation
  • Measurement of DC Insulation Resistance Between Each Winding and Ground, and Between Windings
  • Leakage Test Under Pressure for Liquid-Immersed Transformers (Sealing Test)
  • Applied Voltage Test
  • Induced Voltage Withstand Test
  •  
Type Tests
  • Measurement of No-Load Loss and Current at 90% and 110% of Rated Voltage
  • Temperature Rise Test for Liquid-Immersed Transformers
  • Full Wave Lightning Impulse Test
  • Determination of Sound Levels
Special Tests
  • Measurement of Zero Sequence Impedance
  • Measurement of Capacitance and Dissipation Factor of the Insulation System
  • Tank Lifetime and Sealing Test