Abstract Automatic throw-in device of emergency supply (BZT is a shortened form)are the important devices that keep power supply for factories. The choice reasonis not only necessary in design, but also the calculation must be right beforeapplication. This paper analyses and discusses the problems in calculation andcollocation of fit time values in detail for standby power automatic supply deviceof general system in factory’s chief substation.
XU Jian-Ying-；Liu-Yu-Ping. Calculation and Collocation of Fit Time Values of automatic throw-in device ofemergency supply in Chief Substation[J]. Journal of Drainage and Irrigation Machinery Engin, 2002, 20(4): 24-26.