Kirchweg 28a 5415 Nussbaumen Switzerland

Phone: +41 (0) 56 282 0277

Mobile: +41 (0) 79 458 0035

Fax: +41 (0) 56 599 2385



JT Systems is specialized in the field of power systems engineering. We are able to deliver the most requested power system analysis studies, provide electrical design services, training and field services. We also provide power equipment design services, power systems simulation and analysis tools, real time simulators and electrical power components design tools. On request JT Systems can provide special field services or tailored training. Our main clients are large equipment manufactures, large electricity authorities and engineering companies.


  • Equipment
  • Studies
  • Consultancy
  • Design
  • Software
  • Training
  • Field services
  • Real time simulators (synchronous machines, turbines, complete power stations)

  • Modeling
  • Load flow and voltage drop calculations
  • Short circuit analysis
  • Stability analysis and simulations
  • Harmonics analysis
  • Asynchronous and synchronous motor starting studies
  • Protection selectivity and coordination studies
  • Power system stabilizer tuning studies

  • System fault analysis
  • Elaboration of operational concepts (e.g. power plants, pump stations, converter stations)
  • Electrical machines starting and operation conceps (e.g. back-to-back starting sequence, asynchronous start up of large synchronous machines, soft starters etc.)
  • Analysis of partial or total power plant retrofit and concept elaboration

  • Controller structure design
  • Power transformers design and specification
  • Power semiconductors and converters design
  • AC and DC breaker selection
  • Surge arresters' calculation
  • Harmonics filters' design
  • Cooling systems for power components
  • Calculation of controllers tuning parameters

  • Programming of dedicated and process specific simulation tools
  • Real time simulators (synchronous machines, turbines, complete power stations)
  • Automated design software tools for electrical power components (e.g. power electronics calculation tools, transformers calculation tools etc

  • Power system stability training
  • Applied synchronous machines - theory and simulation
  • Applied control systems stability analysis - theory and simulation
  • Power systems stabilizers - theory and simulation
  • Elaboration of training material
  • Tailored trainings as per customer's needs

  • On site system parameters identification (synchronous machines parameters, controller parameters)
  • On site controller optimization and tuning
  • Trouble shooting
  • Start up supervision and support
  • Site survey for system data acquisition and modelling
  • Harmonics measurement and analysis
  • Commissioning of power and control equipment
  • Other services on request
Field Services