CORE CUTTING

The Core is constructed from Lamination of Cold Rolled Grain Oriented, Low Loss Electrical Sheet, featuring excellent magnetic properties; Slit coils conforming to BS 6404 are sourced from reputed mills.

The core laminations are cut to a designed geometry on a most modern fully automated CNC Core cutting machine of GEORG, Germany. The individual stampings are coated on both sides with insulating material that is both oil and temperature resistant.

Testing

The following Routine Tests (as per IEC 60076) are carried out on all Transformers:

* Separate Source Voltage withstand test.

* Induced Over voltage Test.

* Voltage Ratio and Vector Group test.

* Measurement of Winding Resistance.

* Measurement of No Load Loss and Magnetizing Current.

* Measurement of Load Loss and Impedance Voltage.

* BDV Tests on Oil.