Use this Protection Relay Setting Calculator to calculate pickup current, time multiplier settings (TMS), operating time, coordination time interval (CTI), and plug setting multiplier (PSM) using fault current, CT ratio, and IEC 60255 curve parameters. Essential tool for relay technicians, protection engineers, and commissioning specialists. Visualize Time-Current Characteristic (TCC) curves on a log-log plot with IEC 60255 IDMT curves (SI, VI, EI, LTI), real-time CTI verification, fault sweep animation, and automatic TMS optimization. Supports LV to transmission voltage levels with 5 professional presets and exportable coordination. Ensure the reliability and safety of your protection system with Megger's specialised tools and accessories—ideal for testing auxiliary relays and handling complex or critical applications with precision and confidence. Testing protection systems doesn't stop at the relay.
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