Sc07. Surge Counter. Cg Make 400Kv

The CG Power (Crompton Greaves) SC 07 is an outdoor-type surge monitor and discharge counter designed for the condition monitoring of Extra High Voltage (EHV) surge arresters, including 400kV systems. It is a self-powered device that records the number of surge events and measures the total leakage current flowing through the arrester to the ground.Technical Specifications Feature Details Compatible Systems 66kV, 132kV, 220kV, and 400kV Leakage Current Scale 0 – 5 mA (typically) or 0 – 10 mA Counter Type 6-digit mechanical cyclometer Min. Counting Current 100 Amps ( wave) Ingress Protection IP67 (Dust-tight and immersion-proof) Operating Temp. Up to 60°C or 65°C Key Features & Indicators Condition Monitoring: The integrated analog milli-ammeter allows operators to monitor the health of the Zinc Oxide (ZnO) elements. Green Zone (0–3 mA): Indicates normal operating leakage current. Red Zone (3–5 mA): Indicates potential deterioration or heavy surface contamination requiring maintenance. Self-Powered: Requires no auxiliary AC or DC power supply; it operates using the energy from the surge itself. Durable Construction: Housed in a powder-coated aluminum casting to resist corrosion, featuring a glass window for easy viewing from ground level. Mounting: Typically mounted using two M12 bolts on the rear and connected in series with the arrester's earth lead.