The temperature of the metal oxide arrester（MOA）is the results of various parameters affecting

therefore

accurately judge whether MOA work in the thermal steady state is the important content of the arrester on-line monitoring.Measurement principle of surface acoustic wave（SAW）temperature sensor is analyzed using wireless passive SAW temperature sensor

applications scheme of scale unit MOA temperature measurement is designed

through researching on the laboratory scale unit thermal characteristics

the feasibility of application of SAW technology in the arrester wireless passive temperature measuring system is verified

the accuracy of measurement parameters is improved

it has important meaning to realize MOA on-line monitoring.