Complex sentence: In Germany (except Mecklenburg-Western Pomerania and Saxony-Anhalt), Austria and Switzerland, there are special power grids for single phase AC current at16.7 Hz; the voltage of these grids is 110 kV in Germany and Austria, 132 kV in Switzerland.
Split into simpler sentences: In Germany (except Mecklenburg-Western Pomerania and Saxony-Anhalt), Austria and Switzerland, there are special power grids for single phase AC current at a frequency of 16.7 Hz. The voltage of these grids is 110 kV in Germany and Austria, 132 kV in Switzerland.