Abstract:Pump is a key sub-system which drives the heavy liquid metal circulation in experimental loops. In the paper, the hydraulic and mechanical performances of an electromagnetic pump (EMP) were tested in the liquid metal test facility named PREKY-I. The test results showed that the EMP worked at good state when the working current was up to 170 ampere. In this condition, the flow rate was 5m³ /h, and pressure head 7.5bar, when the outlet temperature was kept at 380℃ during the test. The performance was close to the expected design parameters. The EMP had run continuously for 200 hours with stable performance. From the test results, the EMP could be used in KYLIN-II loop, which is the upgrade liquid metal test loop of PREKY-I.