HV Equipment

SGDA (Up to 3,000 kV)


The SGDA impulse generators are the perfect solution for carrying out impulse tests on HV or UHV cables (5 kJ version) as well as on MV and HV power transformers (10 kJ version). Their small footprint and stable design meet the needs of universities and R&D centers. With its unique Delta-structure, the SGDA impulse generators are easy to transport and erect onsite. The SGDA series are available for 5 or 10 kJ stage energy, with total charging voltages from 200 up to 3,000 kV. Also, this system features the lowest internal inductance ever achieved and is well-suited for transformer manufacturers.


  • Total charging voltage 200 to 3,000 kV
  • 5 or 10 kJ stage energy
  • The lowest internal inductance ever achieved
  • Small footprint
  • Reliable and accurate triggering by improved Marx Circuit
  • Handy plug-in resistors and connections
  • Unique protective grounding device
  • Ease of operation with modern control system
  • Impulse wave shapes’ analysis according to latest IEC and ANSI/IEEE standards
  • Compact Design
  • Short configuration times
  • A modular expandable system that grows with your application needs (max. 3,000 kV)
  • Easy handling and transportation for on-site testing
  • High stability and durability

DATA SHEET:     SGDA Impulse Voltage Test System

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