When the manual shutdown button on a wind turbine is operated, it shall result in a parked turbine state that shall ___.

When the manual shutdown button on a wind turbine is operated, it shall result in a parked turbine state that shall ___.

• A. stop the turbine rotor
• B. allow limited rotor speed with means to de-energize the output circuit
• C. either a or b
• D. neither a nor b

Answer: (C)

When you push the manual shutdown, the turbine must enter a parked, safe state that prevents hazards from both motion and electrical energy. Design can achieve this in one of two ways: fully stopping the rotor with braking to remove mechanical energy, or bringing the rotor to a very slow, controlled speed while simultaneously de-energizing the electrical output so no power is exported to the grid. Both approaches meet the safety requirement of a parked condition enabling maintenance or safe shutdown. That’s why the correct choice reflects that either stopping the rotor or maintaining limited rotor speed with the output circuit de-energized is acceptable.

When you push the manual shutdown, the turbine must enter a parked, safe state that prevents hazards from both motion and electrical energy. Design can achieve this in one of two ways: fully stopping the rotor with braking to remove mechanical energy, or bringing the rotor to a very slow, controlled speed while simultaneously de-energizing the electrical output so no power is exported to the grid. Both approaches meet the safety requirement of a parked condition enabling maintenance or safe shutdown. That’s why the correct choice reflects that either stopping the rotor or maintaining limited rotor speed with the output circuit de-energized is acceptable.