With a clear whistle, the hot running test train of Shenyang Metro Line 3 slowly returned. The hot running test for the western section of Shenyang Metro Line 3 Phase I has been successfully completed, laying a solid foundation for the next step of dynamic train debugging and operation by the end of the year.

　　The hot running test is a "major exam" after the catenary is energized. During the test, the metro train ran back and forth in the section at low, medium, and high speeds, conducting comprehensive dynamic train tests on the traction power supply system, pantograph-catenary relationship, signaling, track, and communications, ensuring the normal operation of the train and meeting the conditions for joint debugging and testing.

　　To efficiently complete this hot running test, the construction unit, China Railway Electrification Engineering Group Co., Ltd., seized the golden period of construction and production. In the catenary construction, electric torque wrenches were widely used to improve the efficiency of catenary installation. In addition, the project department also actively carried out the "50-Day Decisive Battle" labor competition, divided into multiple teams, and efficiently completed various installation and construction tasks through uninterrupted construction.