Primary wiring structure of local control box of air pre-heater of 1000MW generator set

The utility model discloses a primary wiring structure of an air pre-heater local control box of a 1000MW generator set, which is characterized in that when a switch or a contactor in a primary wiring loop in the air pre-heater local control box is subjected to fault maintenance, the switch is effectively and safely isolated, and the fault can be handled without stopping the air pre-heater. According to the utility model, the one-time wiring design is reasonable and ingenious, the fault electrical element in the one-time wiring is safely isolated through the simple and reasonable electrical element, the adverse influence in the shutdown process of the air pre-heater is reduced, and the safe operation of the thermal generator set is ensured. 本实用新型公开了一种1000MW发电机组空预器就地控制箱一次接线结构，当空预器就地控制箱内部一次接线回路中开关或接触器故障检修时，通过开关有效地安全隔离，无须停运空预器即可处理。本实用新型一次接线设计合理、巧妙，通过简单、合理的电气元件安全隔离一次接线中故障电气元件，降低了空预器停运过程中不良的影响，保障火力发电机组安全运行。