KJ Dynatech has established as a name of Gumjung Mulsan importing high voltage testing equipment - becoming the leading company of measurement industry on 1977. Afterward 34 years, we contributed to various industries as Utility, Refinery, Power Plant and Iron & Steel with forward-edge technology. From years of 2000, we have been distributing live-line measurement technology to test high voltage equipment. Nowadays, we supply on-line monitoring system for Rotating machines, Oil-filled transformer, Cable, Dry-type transformer, distribution panel. But we also supply engineering service for these assets to diagnose the insulation status. Every On-line monitoring needs total engineering and diagnostic techniques and should be considered with electrical, chemical, mechanical, physical, environmental and thermal status together with failure mechanism. The worldwide trend is to install sensors to all high voltage equipment and test in live-line and diagnose every 6 month or 1 year. On-line monitoring system is installed if any insulation failure signals. Main issues are proper sensor, measuring techniques and monitoring system. All techniques are to be economical and technically-proven. We use leading technology in the world and try to supply with economic system. And besides providing just simple data but provide total diagnostic techniques. We will be your guiding light for your important assets.