Transformer Commissioning
NNN Group PTY LTD has highly qualified, competent commissioning engineers and test technicians, capable of undertaking the complete electrical testing and commissioning of transformers and ancillary equipment such as:
 Sweep frequency Response Analysis
Winding Resistance
Tan Delta of Windings
Insulation Resistance (Megger)
Insulation Resistance of Auxiliaries
Core Ground Resistance Measurements
Transformer Turn Ratio
Vector Group Verification
Tan Delta and Capacitance Testing of Bushings
Excitation/Magnetising Current
380V Impedance test/Leakage Reactance
Current Transformer Testing
Control Equipment Overload Settings
OTI and WTI Calibration
Commissioning Test Reports
First Line Maintenance Training
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