ARRANGEMENT, CIRCUIT BREAKER AND PRECHARGING DEVICE FOR A DC POWER NETWORK

An arrangement (1a..1l) with a circuit breaker (20) and a precharging device (21) is disclosed, where two series capacitors (C, C) are connected to a direct current power network (DC) and where the arrangement (1a.. 1l) comprises a circuit switch control unit (SCU), which is designed to open a circuit switch (Sc) in case of overcurrent and/or upon manual intervention, a load control unit (LCU), which is designed to limit a load current of the two series capacitors (C, C) by use of a high ohmic path (4), and a balance control unit (BCU), which is designed to measure a capacitor voltage (V, V) of each of the two series capacitors (C, C) and to avoid or limit and an imbalance of these capacitor voltages (V, V) by individually controlling currents through the two series capacitors (C, C).