石油化工生产装置低压系统接线及接地型式

摘要

简述低压系统接地的型式，介绍了石油化工生产装置低压系统的接线方式，根据用电负荷特点及工程实际绘制了石油化工生产装置低压系统接线图，探讨关于低压系统三极、四极断路器选择的问题，结合实际分别阐述电动机配电电缆芯数选择问题及变压器中性点工作接地线截面的确定。%Grounding types of low-voltage system were described, wiring of low-voltage system in petrochemical plants was introduced, wiring diagram of low-voltage system in petrochemical plants was drew based on electrical load characteristics and engineering practice, choice of level 3 and level 4 circuit breakers in the low voltage system was discussed. Combined with the actual conditons, selection of the motor power cables was also discussed, and the neutral point grounding wire section of transformer was determined.