A calculation-focused guide to protection CT ratio, IEC accuracy class, burden, lead resistance, ALF, knee point, remanence and saturation checks for MV relay applications.
A practical guide to 3V0/3I0 measurement, wattmetric and admittance elements, transient and restriking faults, Petersen-coil tuning, settings and field testing.
How the neutral-grounding method changes MV earth-fault current, overvoltage, relay quantities, CT/VT arrangement, settings and fault-location strategy.
A calculation-led guide to phase and earth overcurrent settings, directional elements, IEC/IEEE inverse curves, coordination margins and commissioning checks for MV feeders.
A practical, vendor-neutral workflow for specifying MV protection relays: functions, CT/VT inputs, I/O, DC supply, IEC 61850, cybersecurity, testing and lifecycle requirements.
A practical assurance-case and FMEA method for proving the complete protection path, exposing hidden common-mode failures and turning FAT/SAT results into defensible evidence.
Why internal-arc performance is a system property involving the tested switchgear, installation geometry, room volume, ducting, outlets and operating access.
A protection-focused cybersecurity lifecycle covering architecture, identity, engineering access, firmware, key management, logging and recovery without compromising deterministic operation.
A practical commissioning method for the complete digital protection chain—from CT/LPIT and merging unit through Sampled Values, IED logic, GOOSE and the physical trip circuit.
An engineering specification framework for analog, low-level and IEC 61850 relay testing—focused on test coverage, evidence quality and lifecycle fit rather than channel-count marketing.
