Engineering of CTs, VTs, LPITs and sensors, including accuracy, burden, saturation, wiring, protection interfaces, merging units and commissioning.
How IEC 61850 process bus works in MV switchgear: sensors, merging units, Sampled Values, timing, network architecture, redundancy, quality supervision and end-to-end testing.
A vendor-neutral engineering guide to low-power current and voltage sensors, Rogowski coils, analogue and digital interfaces, scaling, accuracy, interoperability and commissioning.
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 high-impedance 87B protection for MV busbars: CT matching, stability voltage, pickup sensitivity, stabilizing resistors, MOV sizing, trip logic and field testing.
A practical guide to numerical low-impedance 87B protection: operate/restraint characteristics, CT saturation security, selective and check zones, disconnector replica, end-zone and breaker-failure logic.
A practical engineering guide to REF protection for grounded transformer windings: zone boundaries, 64REF/87N terminology, high- and low-impedance methods, CT design, settings, trip logic and commissioning.
