at200y intelligent strap error-proof management system is mainly composed of intelligent strap management software, a controller and a strap module. the system monitors strap status through a non-electrical measurement principle and achieves real-time acquisition and management of strap status by the online monitoring technique. by means of sound and light, an alarm is given in case of strap exception or misoperation. the system supports combination with the error-proof system to realize effective and comprehensive error-proof management and avoid grid accidents that might occur due to improper strap switching. in addition, it can work as an independent system to effectively lighten the work intensity of operators in routine strap polling.