The high-voltage supply unit is intended for testing current converters in the energy sector, as well as testing the entire auxiliary converters and switched power supply systems used in railway installations.

• Conforms to: VDE 0552
• Test voltage 3 kV for primary circuit
• Protection IP 20
• Ambient temperature: 40 °C

• Power switch with magnetic and thermal cut-out in the mains input circuit
• Main contactor for operational switching of transformers
• Emergency Off switch and safety loop with warning lamps
• Air-operated short-circuiting and grounding switch for the DC output
• Viewing window for DC analog voltmeter and air-operated breaker
• Analog meters for V & A in the mains supply (96 x 96 mm format)
• Digital meters for V & A in the AC/DC output (96 x 48 mm format)
• Analog meters for the DC output
• Electronically-controlled voltage stabilization
• Forced zero-position for the variable transformer
• Output protected against short-circuit and overload
• Selectable DC output voltage range
• Discharge circuit for external DC link capacitor
• Pushbutton and indicator lamp (22 mm Ø) for operation

• Testing of AC and DC current converters with one unit
• Constant residual ripple over the entire adjustment range of the DC output
• Clean sine wave of the AC output voltage
• No EMC problems
• Control error approx. 1 % for AC and DC outputs
• Fast regulation of voltage variations
• Outputs protected against short-circuit and overload
• Doubled output current at half the DC voltage selectable
• True rms measurements with the digital meters
• System operation possible by means of a control panel not in the immediate vicinity of the HV supply unit
• Grounding possibility provided for the DC output
• Additional control of supplementary equipment possible via the control panel