功率方向继电器的转矩M=KUKIKcos(φK+α),所以继电器的动作带有方向性,它的动作范围()。A、-(90°+α)>φK>(90°-α)B、φK=90°-αC、-(90°+α)<φK<(90°-α)D、φK=90°+α
功率方向继电器的转矩M=KUKIKcos(φK+α),所以继电器的动作带有方向性,它的动作范围()。
- A、-(90°+α)>φK>(90°-α)
- B、φK=90°-α
- C、-(90°+α)<φK<(90°-α)
- D、φK=90°+α
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