方大特钢10000Nm3/h制氧机组分子筛电加热器运行中突然失电,引起了为其供电的低压变压器主回路综保动作、跳闸,造成该制氧机组工艺氩泵、氮透油泵、空压机排烟机等停机故障。通过分析,采取了相应的改进措施,提高了供电的安全性、制氧机组运行的稳定性。 Fangda Special Steel 10000Nm3 / h oxygen unit molecular sieve electric heater operation in the sudden loss of power, which led to the supply of low-voltage transformer main loop comprehensive insurance action, tripping, resulting in the oxygen unit process argon pump, nitrogen pump, empty Press machine smoke machine downtime failure. Through the analysis, the corresponding improvement measures have been taken to improve the safety of power supply and the stability of operation of oxygen plant.