The arrangement (MF) has N-phase alternating current (AC) transformer (2) comprising primary windings (211-213) connected in a polygon. A vector sum of voltages present at multiple secondary windings (222, 223) is zero when the transformer is idle. A verte...

The power supply arrangement has a transformer that is provided with secondary winding with several taps (3UN,3VN,3WN). The secondary windings of transformer are connected in power supply unit through a power controller. A control input is connected to con...

The arrangement has network (AC3) to be protected or load to be protected connected to inverter output of inverter (3). The rectifier input or second supply grid (AC2) is connected with inverter output via switching unit (4). The rectifier (1), inverter an...

A rectifier (1) has a rectifier input and a rectifier output, an energy store (2) stores electrical energy, and an inverter (3) has an inverter input and an inverter output. The rectifier input is connected to a supply grid (AC1). The energy store is conne...

The arrangement has a rectifier (1) whose rectifier input is connected to a supply network (AC1). The rectifier input or the network is connected with an inverter output of an inverter (3) through a switching element (4). The rectifier, the inverter and th...

Additional terminal groups have at least two terminals for connecting at least one load (41-44). The terminals of each terminal group are connected with a main terminal without an interconnected switch, and with an output terminal (24) of one of additional...

The arrangement has a control unit provided with a controller for controlling and/or regulating a basic supply unit. The basic supply unit is provided with an input part for supplying electric energy to a basic supply module (B). An output part supplies el...