无功: idle; idle work功: exploit; merit; meritorious ...率: rate; ratio; proportion继电器: electric relay; relay无功功率继电器: reactive power relay感应式无功功率继电器: induction type reactive power relay有功无功功率继电器: arbitray phase angle power relay有功功率继电器: active power relay感应式无功功率继电路: induction type reactive power relay比率继电器: quotient relay变率继电器: rate of change relay; rate-of-change relay功率继电器: power relay频率继电器: frequency relay速率继电器: speed relay变化率继电器: rate of change relay; rate-of-change relay大功率继电器: high power relay低功率继电器: minimum power relay; underpower relay低频率继电器: under frequency relay过功率继电器: overpower relay逆功率继电器: reverse-power relay欠功率继电器: under-power relay定向功率继电器: directional power relay反比功率继电器: inverse power relay反向功率继电器: reverse power relay三相大功率继电器: three-phase large power relay
