An arc fault occurs in the functional unit of assembly. The unit discharges via a pressure relief opening into a station building, that discharges into the environment via its own pressure relief opening.
Fig. 1 Arrangement
In the pressure network, the electrical input variables (Fig. 2, Fig. 3) and the geometric boundary conditions are simulated using power, volume and pressure relief elements. Runtime effects and reflections are taken into account.
Fig. 2 Exemplary pressure network of an arrangement
Fig. 3 Arc power
The calculation of the pressures (Fig. 4, 5) is dynamic and dependent on time.
Fig. 4 Overpressure curve in the switchgear
Fig. 5 Overpressure curve in the building