Indicators on giới thiệu You Should Know
Harmonics are periodic distortions of voltage, present, or electric power sine waves. Harmonics in power distribution systems are often due to non-linear loads such as switched manner dc electricity supplies and adjustable speed motor drives.Các địa phÆ°Æ¡ng phÃa Nam là khu vá»±c phát triển chủ yếu, Ä‘em lại nguồn thu chÃnh cho xá