Secondary Electrical Technology

Our Services:

We are THE experts in electrical protection technology.

Protection Technology

• Our engineers can assess and parameterize block protection for power plants >500 MW and connect them to the grid after the first start-up.
• We regularly test 110kV busbar protection systems during ongoing operations.
• We have hands-on testing experience with the 380 kV transmission grid, particularly in the new eastern federal states and Hamburg.
• We offer switching capabilities up to 380kV.
• We provide work-under-voltage training for installation systems, switchgear, and instrumentation & control systems.
• We prepare setting sheets and perform selectivity calculations.
• We offer 24/7 on-call troubleshooting services.
• We have expertise in IEC 61850 and IEC 60870-5-103 system integration.
• We test and recalibrate electro-mechanical protective devices.
• Equipment
  • Primary Testing
  • Secondary Testing
  • Transformer Testing (accuracy class up to 0.1)
  • 400V Testing
  • 61850 Sniffer and Simulator

Secondary Planning

• Planning control cabinets and niches
• Incorporating necessary revisions
• Manufacturer-independent device selection
• Software licenses for:
  • Ruplan
  • Elcad

Commissioning

Typical activities during commissioning of generators, transformers, and switchgears include:

• Checking the parts list, terminal, and circuit diagrams
• Terminal checks
• Insulation tests for secondary cables
• Testing of circuit breakers and loop measurements
• Phase control
• Function testing for all controls, measurements, signals, and feedback signals
• Testing of protective devices
• Checking the control/locking systems
• Transmission ratio and load measurements for current and voltage transformers
• Preparation of work schedules
• Short-circuit and voltage tests
• Equipment
  • Primary Testing
  • Secondary Testing
  • Transformer Testing (accuracy class up to 0.1)
  • 400V Testing
  • 61850 Sniffer and Simulator