洛阳中昊化学工业有限公司变脱 (变换和脱碳 )系统控制室有 7个仪表操作盘 ,全部采用ＤＤＺ-Ⅲ型电动单元组合仪表 ,每个操作盘由 2ＤＦＹ -2 1 1型电源箱供电 (分别为主电源和备用电源 ) ,电源由电气十五变低压配电盘单回路供电。变脱系统自投运以来 ,仪表电源系统暴露出以下 Luoyang Zhonghao Chemical Industry Co., Ltd. change off (change and decarburization) system control room has seven instrument panel, all with DDZ-Ⅲ-type electric unit combination of instruments, each panel by 2DFY -2 1 1 power supply box (Respectively, the main power and backup power), the power supply by the electrical power supply switch low voltage distribution board a single loop. Change off the system has been put into operation, the instrument power system exposed below