SIGRADE is a professional software tool for over-current protection coordination. It enables visual representation of several time-current characteristics of different devices simultaneously. In this way, the selectivity of individual protection paths can be systematically investigated.

The SIGRADE software was developed within LPEE laboratory in cooperation with Siemens AG.

Most important features include:

  • Simple handling and flexibility,
  • Visualization of single-pole diagrams, protection paths and protection diagrams for the needs of project documentation,
  • Short-circuit and earth-fault currents calculation.

Extensive database of protection devices enables fast and simple parameterization of protection devices. Depending on single-pole diagram, SIGRADE can be also used for creation of impedance diagrams. Also, after over-current protection parameterization is complete, individual distance protection zones can be easily visualized.