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Current monitor visual for surge protection devices / leak - LCM500
The Leakage Current Monitor (LCM) system is specially designed to measure the resistive component of continuous leakage current in gapless metal oxide surge arresters (MOSAs). The LCM connected to the arrester comprises of three main parts. A current probe attached to the connector of either a clip-on current transformer or a toroid transformer (in permanent installations). A wireless field probe positioned adjacent to the base of the arrester to pick up the 3rd harmonic capacitive current component as a result of harmonics in the system voltage. A leakage current instrument that makes use of analysis of current and field probe signals for determination of resistive component of the leakage current.