Protection relays, CTs, VTs, LVCs, secondary circuits, trip systems, automation and communication engineering for medium-voltage switchgear.
A field-focused engineering guide to the Hitachi Energy RTXP 24 COMBITEST switch, including contact sequencing, the RK 926 315-AK terminal map, CT and trip safety, accessories, mounting and a practical secondary-injection workflow.
A complete IEC 61850 engineering guide covering data models, MMS, GOOSE, Sampled Values, SCL, networks, cybersecurity, FAT, SAT and commissioning.
A data-architecture guide that keeps high-rate disturbance and PQ evidence intact while linking it to historian trends, SOE and configuration context.
A closed-loop FLISR engineering guide that blocks optimistic switching when fault evidence, topology, communications or restoration limits are uncertain.
A coordinated MV automation guide for transfer philosophy, staged load shedding/restoration, breaker feedback, protection and degraded modes.
A staged and safety-controlled FAT/SAT method that proves remote commands, rejections, physical outputs, breaker operation and independent feedback.
A quality-first mapping guide covering q attributes, quality-change events, target-protocol limitations, HMI display, control gating and fault injection.
An end-to-end measurement-chain guide for preventing ratio, unit, sign, word-order and duplicated-scaling errors while controlling analog traffic.
A practical alarm lifecycle that separates alarms from SOE/status, prioritizes operator action and controls floods without losing forensic evidence.
A risk-based substation zone-and-conduit design that contains cyber compromise while preserving deterministic protection and essential local control.
