But the most frequent and harmful malfunction is the short circuit short circuit malfunction can bring serious damage to industry and agriculture ' s production and people ' s life 短路故障危害性極大,輕則會燒壞設備,重則有時甚至會破壞整個電力系統(tǒng)的正常運行,給工農(nóng)業(yè)生產(chǎn)和人民生活帶來嚴重干擾。