Direct-current power supply device suitable for measuring longitudinal resistance and transition resistance of steel rail

The utility model provides a direct-current power supply device suitable for measuring longitudinal resistance and transition resistance of a steel rail, which comprises a current generator, a switch K1, a switch K2, a switch K3, a switch K4 and an intelligent monitoring device, a power source negative electrode of the current generator is connected with a current drainage terminal in a current drainage cabinet through a switch K2, connected with a substation grounding busbar through a switch K3 and connected with a steel rail current-sharing wire through a switch K4, and the intelligent monitoring device is connected with the current generator, the switch K1, the switch K2, the switch K3 and the switch K4. And the intelligent monitoring device is connected with the steel rail potential measuring device. The utility model provides a reliable power supply for steel rail transition resistance measurement and steel rail longitudinal resistance measurement. 本实用新型提供了一种适用于钢轨纵向电阻和过渡电阻测量的直流电源装置，包括电流发生器、开关K1、开关K2、开关K3