In the scene examination of 500kV electric transformer,the test condition is complex,for example, equipment quantity and large volume. It is not only required to build the test platform each time, but also time-consuming and low efficiency of verification.This paper proposed a new type of scene examination system, which designs the boost system, transformer calibrator and control section as a whole. The scene examination system is not need to bulid the platform again,so it improve the efficiency of on-site verification.The test system has been successfully applied in 500kV electric transforme on-site calibration .%500kV电力互感器现场误差校验试验时，仪器设备数量多、体积大，试验条件复杂；每次检定均需搭建试验平台，耗时费力，检定效率低。本文提出了一种新型的电力互感器误差现场校验系统，其将校验装置设计为一个整体，试验时可全自动展开为一套现场试验系统，无需二次搭建，提高了现场检定效率。该试验系统已成功研制并运用于变电站电力互感器现场检定中，效果良好。
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