Arrester AC aging test is an important item in arrester type tests.Aimed at the shortcoming of the previous testing system

an unwatched supervisory system had been built up for the AC aging test.In this system

digital signal processor and programmable logic controller were used.Therefore

data measuring and data processing were real-time and reliable.In addition

the structure of this system was a distribution control system

which included three parts.Every part of this system had specific function and could work independently

so the scientific and security of the system was highly improved.Furthermore

the maintenance service cost was reduced.Comparing with the previous tests

not only the measure accuracy is higher but also any problem of AC aging test can be tracked.The unwatched supervisory system is realized authentically.