The KBT51A consists of four components: a space ultra-high frequency partial discharge sensor, a space ultra-high frequency partial discharge receiving host, a switchgear partial discharge three-in-one sensor, and a partial discharge three-in-one wireless receiving host. The product utilizes advanced high-performance industrial microprocessors, offering strong anti-interference capabilities. It employs built-in ultrasonic, ultra-high frequency, and ground wave sensors to monitor partial discharge signals in the equipment. The product is suitable for monitoring partial discharge signals during the operation of large electrical equipment, as well as partial discharge caused by insulation defects in switchgear and spatial discharge conditions in distribution rooms.