PM Technologies Inc. (APM) is a global leader in partial discharge monitoring system located in South Korea that develops technologies for partial discharge monitoring system and analysis for the enhancement, reliability, and maintenance of substation facilities, especially for their Gas Insulated Switchgear, Transformer, Medium Voltage Switchgear and EHV Cables. APM’s products enable the intelligent digital substation by means of supporting global smart grid standards such as IEC61850. APM (Advanced PD Monitoring) series have been adopted for numerous governmental and private projects around the world, and approved world’s first by Saudi Electricity Company. APM 5000 is the on-line, real-time, fixed system to measure the PD in GIS. APM 2000 is portable and it detects, analyses and records ultra-wide-bandwidth of electro wave signals by highly sensitive UHF sensors in all voltage ranges which can be generated by partial discharge in GIS. Electric power facility diagnosis trends are moving from off-line diagnosis (diagnosis during power stoppage) toward on-line diagnosis (diagnosis in real time during use). As a result of the rapid developments in technologies, APM Technologies Inc. is on the forefront of the new diagnostic capabilities. Our competitive technologies come from excellent engineers who have high level of skills from their experiences in the Partial Discharge Diagnostics industry.