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Establishing connections at Ems barrage
15 November, 2005
Low-voltage switching devices play a key role at the Ems Barrage in Germany. Holger Sönnichsen reports

Change of speed - variable units investigated
16 March, 2005
Variable speed units for pumped storage power plants are becoming a state-of-the-art technology for optimised efficiency in turbine mode and a wide range of power control in the pump mode. K Scherer reports on aspects and challenges for the design of the motor-generators, using Goldisthal pumped storage plant in Germany as an example