In an emergency or during unexpected downtimes, the pitch system must be capable of returning the rotar blades at a fixed speed to a safe 90° position. Even during a network failure. This is one of the directives est......In an emergency or during unexpected downtimes, the pitch system must be capable of returning the rotar blades at a fixed speed to a safe 90° position. Even during a network failure. This is one of the directives established by Germanischen Lloyd. For us it’s a given. Of course the pitch system then requires an uninterrupted power supply (UPS). This is accomplished with batteries or ultracapacitors. And because we never make compromises when it comes to safety, we offer both technologies and recommend the optimal system for your WTG type. Ranging from voltages of 144 V, 216 V, 288 V … you need only remember one figure: 100 %. That is the only acceptable safety standard when it comes to your WTG.
