1. Method and inverter for feeding electrical energy to an ac network

2. Surge protection of 3-phase AC network is also possible by association fo two DS240s.

3. An algorithm for the calculation of the output signal harmonics in a nonlinear electromagnetic AC network is presented.

4. The development time schedule shall be provided by the DC-connected power park module owner at the time of connection to the AC network.

5. That at Kjofossen, feeds its power directly in the overhead wire, while that at Hakavik supplies a small 55 kV single phase AC network, which feeds five substations.