| 摘要 |
PURPOSE: A multifunctional switchgear is provided to reduce a power loss and a transformer loss by attenuating the imbalance and harmonic of a current and a voltage due to a nonlinear load. CONSTITUTION: A transformer(200) includes a first coil, a second coil, a core with a first leg, a second leg and a third leg, and a first winding, a second winding, and a third winding. An earthquake sensor(400) includes an acceleration sensor and an amplifier. The acceleration sensor senses a vibration due to an earthquake. The amplifier removes the noise of a signal from the acceleration sensor and amplifies the signal without the noise. |
