A portable Test Device for Magnetic Latching Relay

Magnetic latching relay, with the advantages of power saving, stable performance, small cubage and large carrying capacity, has been extensively used in power quality improvement field. While the testing equipment of magnetic latching relay, with a lower work efficiency, only targets the manufacturers. To solve this problem, the article proposes a portable test device for magnetic latching relay, introduces the device frame, hardware, software implementation and the test procedure, illustrates the test project, method and result by testing cases. The testing result demonstrates that the device is technically feasible and actualizes the automatic batch testing for latching relay, and that the device runs well during the testing procedure, holds the character of convenient connection and portability and can fully satisfy the field test requirements.