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Sweden

Sweden

Leine Linde releases streamlined slip ring

SWEDEN: Leine Linde Systems has developed a new slip ring that can operate without additional evaluation electronics and safety relays, thus, the company claims, reducing costs.

The device meets safety standards set out by classification firm GL Garrad Hassan, the firm said.

The newly developed FSR slip ring is responsible for transmitting power, signals, and data between the stationary elements within the nacelle and the moving rotor. It must meet certain standards in order to be sure to shut down the rotor in case of excessive speed.

GL's 2010 guidelines specify that the "rotational speed shall be picked up at least twice by separate systems, and supplied at least twice to the control system and at least once to the safety system".

In Leine Linde's product, a modular slip ring is combined with a rotary encoder – the device that indicates the angular position of the rotating shaft. This eliminates the need for a separate encoder.

The new product will be launched at the EWEA Offshore 2013 in Frankfurt, Germany.

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