In addition to the Short-circuit withstand test in this Laboratory the following tests on Distribution and Power Transformers are usually carried out: Measurement of no-load loss and current at 90 % and 110 % of rated voltage, Measurement of dissipation factor (tan δ) of the insulation system capacitances,…

The synthetic testing is the more economical test method in the event the requested power in direct testing is higher than the power available from the Short-circuit Generator (or from a suitable HV Line). 

In a High Power Laboratory for direct testing the applied voltage, current, transient and recovery voltages, reproducing the normal and abnormal (such as short-circuit) operating conditions of the equipment, are obtained from a single power source. The Laboratory must be supplied by an external HV Line or …