Abstract: With the rapid development of primary and secondary fusion equipment，the detection efficiency of

the traditional primary and secondary equipment testing method is very low，and it is no longer suitable for the new fusion switch equipment testing. In view of this，an integrated testing scheme for primary and secondary fusion

equipment was proposed，which can not only complete terminal test and transformer test independently，but also

complete primary and secondary integrated test. The integrated switching device was designed，which does not need to change the wiring during the testing process，and can realize the automatic completion of all testing items by once wiring，and the testing system is compatible with both electromagnetic transformer and electronic transformer signal detection. Compared with the traditional detection scheme，it saves two detection stations，reduces the area occupied by testing.Take the intelligent pole top switch as an example，it improves the detection efficiency by more than 60%，reduces the detection time of each intelligent switch by 80 min，and improves the detection efficiency of the primary and secondary fusion equipment.

      Key words: primary and secondary fusion；intelligent switch；integrated testing；primary transformer；secondary terminal