Yes it is. The same guidelines must be applied to the DC network as to AC networks in order to ensure human protection. For safe switching and disconnection, new semiconductor and hybrid brakers are being developed and are used in the model applications.
How can system availability be increased by using the DC network? A frequent concern in industrial production is cost-intensive downtime due to power interruptions. The simple integration of energy storage devices into a DC network enables continued operation even during power failures. In addition, the DC grid can be isolated or grounded via a high impedance. This so-called quasi-IT grid has the advantage that the system can continue to produce even in the event of an earth fault, until the issue is resolved at the end of a shift, for example.
How much energy can be saved?It depends strongly on the application and will be measured in the model applications.
What distinguishes the DC-INDUSTRIE network from other DC networks, e.g. in building automation or data centres?
- higher voltage and power range
- highly dynamic loads
- bi-directional power flow
- multi-vendor DC grid
What happens to three-phase motors operated directly on the grid? The switching device between the grid and the three-phase motor is replaced by a robust inverter (DC/AC converter) with variable speed control. This means that the motor can not only run in start/stop mode, but its speed is also optimally adapted to the process. This minimises energy consumption and power dissipation.