In the entire high-speed rail system, the overhead contact line is the most prone to issues. The overhead contact line is the traction power supply system of high-speed rail, drawing high-voltage current from the overhead lines installed above the railway to obtain continuous and sufficient power. The flexible overhead contact line is most susceptible to displacement due to external forces, and when a short circuit occurs after a lightning strike, the likelihood of the train losing power and stopping is high.

The overhead contact line is responsible for the critical task of directly supplying electrical energy obtained from traction substations to electric locomotives. Therefore, the quality and working condition of the overhead contact line directly impact the transportation capacity of electrified railways.

Xi'an LETRY specializes in manufacturing multi-channel fatigue testing systems for train overhead contact lines, used to conduct dynamic lifespan characteristic tests on electrified railway overhead contact line equipment under various loading conditions. These systems are used for metal and non-metal materials and their components under sinusoidal, triangular, square, trapezoidal, ramp, and program block waveforms to perform:

Tensile-compressive fatigue tests;

Toughness tests;

Crack propagation tests;

Fatigue tests;

Relaxation tests;

High-cycle fatigue tests;

Bending fatigue tests.

The testing software supports Windows 10 and various versions of the Windows operating system, with powerful data processing capabilities. Test conditions and results are automatically saved, and the system displays and prints random grouped test data, test curves, and test reports that comply with relevant national standards. It is an ideal, cost-effective testing system widely applicable to research institutes, metallurgical construction, national defense and civil air defense, universities, mechanical manufacturing, transportation, and other industries.