Electrical Tools

Calculate derated current ratings for XLPE EHV cables — 11 kV to 220 kV, 185 to 1200 mm² — per IEC 60287 & IS 3961 with full derating factors. Selecting a high-voltage cable is not simply a matter of choosing a larger conductor size. The cable must carry the required load current continuously without exceeding … Read more

EHV XLPE cable parameter calculator per IS 7098 & IS 8130. Get resistance, impedance, sheath thickness, and short-circuit ratings instantly. Know Your Cable Before You Lay It In electrical engineering, a cable is not just a wire. It is a carefully designed system — every layer, every millimeter, every material has a reason. But calculating … Read more

Calculate resistor values instantly! Support for 4, 5 & 6 band resistors with real-time visual display. Easy color selection, tolerance & accuracy.

Direct Stroke Lightning Protection (DSLP) Calculation Method Direct Stroke Lightning Protection (DSLP) is used in substations, switchyards, transformers, and other high-voltage installations to protect equipment against direct lightning strokes. The method determines the protection zone created by lightning masts (LMs) based on mast height and the height of the equipment being protected. The calculations shown … Read more