PTR 131

Medium voltage feeder protection

General current-based functions (overcurrent, earth fault, negative sequence), supervisory functions (breaker wearing, inrush current, cold load), and specific feeder protection functions (sensitive earth fault, broken conductor, and adaptive recloser controller)

Point of Common Coupling (PCC) protection

General current-based functions (overcurrent, earth fault, negative sequence), supervisory functions (breaker wearing, inrush current), and specific PCC protection functions based on single-phase voltage (over/under frequency, over/under voltage, ROCOF, and reverse power)

Induction motor protection

General current-based functions (overcurrent, earth fault, negative sequence), breaker wearing, and specific motor protection functions (overload based on the thermal model, overtemperature based on RTD measurement, start to inhibit, rotor stall)

Distribution transformer protection

General current-based functions (overcurrent, earth fault, negative sequence), supervisory functions (breaker wearing, inrush current, cold load), and specific transformer protection functions (overload based on thermal model, and earth fault detection on LV side using neutral to ground voltage/current)