60076-5 Link: Iec

5% of the transformer's own impedance, as the transformer itself is the primary limiter of fault current. Demonstration of Withstand Capability

: A physical test where the secondary side is short-circuited while rated voltage is applied to the high-voltage side. Key Technical Categories iec 60076-5

Windings and clamping structures must withstand the peak radial and axial forces without permanent deformation. 5% of the transformer's own impedance, as the

A transformer is considered to have passed the requirements of IEC 60076-5 if it meets several criteria post-test: 5% of the transformer's own impedance

The standard specifies that the winding temperature during a short circuit must not reach a level that damages insulation (cellulose paper or enamel). The permissible short-circuit duration and current are derived from the adiabatic heating equation: