煤炭部1980年颁发的煤矿安全规程中规定:“低压电动机应具备短路、过负荷、单相断线的保护以及远方控制装置.”但现在我矿井下大量使用的QC 83—80低压防爆开关则很难满足此要求,每年都有局扇、采掘运输等设备的电动机被烧毁;我矿的李沟井又是瓦斯突出矿井,所以,不但影响生产,又直接威胁着安全,并造成人力、物力的浪费.鉴于温州三溪矿山电器厂生产的DZB——1型电机综合保护器线路简单、设计合理、使用方便、易于维修等特点,根 The coal mine safety regulations issued by the Ministry of Coal in 1980 stipulated: “Low-voltage motors should be provided with short-circuit, overload, single-phase disconnection protection and remote control devices.” But now the QC 83-80 low-voltage explosion- It is very hard to meet this requirement. Every year, electric motors such as local fans, mining and transportation equipment are burnt down. The Li-ditch well in mine is also a gas outburst mine. Therefore, it not only affects production but also directly threatens safety and human and material resources Of wasting.With the characteristics of simple, reasonable design, easy to use and easy maintenance, DZB - 1 motor protector produced by Wenzhou Sanxi Mines Electrical Appliance Factory