在以往的工程设计中,对具有发火危险的硫化矿床主通风机用电负荷等级有两种不同的看法,一种主张按一类负荷考虑,这就必须保证有两个独立电源供电,另一种意见则认为这样偏高,应按二类负荷考虑。设备用电负荷等级的确定,在供电设计中占有很重要的位置。定高了,经济上 In previous engineering designs, there were two different views of the electrical load rating of a main ventilator for sulphide ore deposits that posed a risk of ignition, one claim of one type of load, which necessitated two separate power supplies and the other Such opinion is that such a high, should be considered two types of load. Equipment load rating to determine the power supply design occupies a very important position. Set high, financially