The High-Voltage Test-Set HVTS 30-20/ 30-40 is designed for high-voltage testing of the electrical insulation of electrical equipment and electrical systems. Test voltage adjustable up to 30 kV, 1-20 mA/ 1-40mA. The High-Voltage Test-Set HVTS mainly consists of an high-voltage transformer and a control and display unit. Primary voltage of the high-voltage transformer is generated by a motor driven variac. Output voltage can be selected from 0.2 to 30 kV with a voltage rise adjustable from 0,4 kV/sec to 30 kV/sec.