Dependency of the DC link voltage on the storage voltage for the MDE90A-..

In an isolated DC grid, the voltage of the B-side is kept symmetrical to ground by leakage currents. This limits the DC link voltage depending on the voltage VB. This limitation does not apply to regenerative energy.

Voltage VB

Maximum voltage VZ

> 500 V

800 V

300 V

700 V

100 V

600 V

0 V

546 V

The device automatically limits the maximum voltage VZ depending on the voltages to ground that are recorded.