Secondary Electrical Technology

Our services:

We are THE experts when it comes to electrical protection

Protection Technology

• Our engineers can check and parameterise the block protection for power plants >500MW and then connect them to the grid after the first start-up.
• We have completely tested 110kV busbar protection systems on a regular basis during ongoing operations.
• In the 380 kV transmission grid, we have gained testing experience in the new eastern federal states and Hamburg.
• Switching capability up to 380kV
• Work under voltage training for installation systems, switchgear and instrumentation and control systems
• We prepare setting sheets and selectivity calculations
• 24/7 On-call troubleshooting service
• Experience with IEC 61850 and IEC 60870-5-103 system integration
• Testing and readjustment of electro-mechanical protective devices
  Equipment for:
  • Primary testing
  • Secondary testing
  • Transformer testing (accuracy class up to 0,1)
  • 400V testing
  • 61850 Sniffer and Simulator

Secondary Planning

• Planning of control cabinets and niches
• Incorporation of neccesary revisions
• Manufacturer-independent device selection
• Software licenses for:
  • Ruplan
  • Elcad

Commissioning

Typical activities during the commissioning of generators / transformers and switchgears are:

• Checking the parts list, terminal and circuit diagrams
• Terminal checks
• Insulation tests for secondary cables
• Testing of circuit breakers, loop measurements
• Phase control
• Function test for all controls, measurements, signals and feedback signals
• Testing of the protective devices
• Checking of the control / locking system
• Transmission ratio and load measurement for current and voltage transformers
• Preparation of work schedules
• Short-circuit and voltage tests
• Equipment for:
  • Primary testing
  • Secondary testing
  • Transformer testing (accuracy class up to 0,1)
  • 400V testing
  • 61850 Sniffer and Simulator