Abstract: With changes in structure and performance of new high-speed maglev long stator winding cable, its key electrical characteristics need to be restudied and determined to provide guidance for product design. Based on finite element simulation technology, electric field strength and distribution, short-circuit current capacity, capacitance current capacity of a new high-speed maglev long stator winding cable were studied and calculated. Electrical characteristics and trend of the cable were determined under different operating voltage levels, different outer sheath volume resistivity, and different contact resistance. Results showed that safety voltage level of the high-speed maglev long stator winding cable could be increased to 30 kV. Besides, outer sheath resistivity could improve the short-circuit current capacity to a certain extent. Contact resistance between the cable and the “Ω” clamp was 0.2 Ω, which could reduce capacitance current capacity by 62%. As a result, good grounding characteristics are the important prerequisite for safe operation of the cables.