ETO & ELECTRICAL

ETO & Electrical Systems Hub

High-voltage, low-voltage, automation and power management in one structured space. Use the left-hand ETO Menu to move between topics without leaving the section.

ETO and Electrical Systems hub hero image

Build Foundations

New to shipboard power or revising for HV endorsement and orals.

Solve a Fault

Trips, blackouts, alarms or strange readings on PMS and protection.

Tools & Test Sheets

Test records, protection setting sheets, cable sizing, harmonic checks.

On Watch

Fast entry points for the electrical issues that get you called to the switchboard room at 03:00.

Generator won’t parallel / unstable voltage AVR behaviour, excitation checks, synchronising — before and after paralleling. Unexpected load-shedding or blackout PMS logic, priority tables, blackout recovery, non-essential trip sequence. Motor tripping on start or VFD faults Starting current, DOL vs soft-start vs VFD, common fault codes, cable faults. UPS alarms / degraded autonomy Battery health, bypass behaviour, autonomy testing, critical-load mapping. Nuisance trips from harmonics or THD VFD-driven harmonics, resonance, filter health, measurement discipline. HV permit about to expire Safe isolation, proving dead, earthing, the specific hazards of 3.3–11 kV work.

Fault Finder & High-Risk Work

Structured fault paths and the electrical jobs that demand the most discipline.

Protection & Coordination Relay settings, discrimination, fault level estimates, trip test records. Blackout Recovery Black-start sequence, essential restoration, DG priority, lessons from real events. Arc-Flash & HV Permits What a safe HV work pack looks like — PPE category, boundaries, proving dead. Shore Power Integration Cold-ironing on older ships, synchronisation, earthing, interface protection. VFD Troubleshooting Common fault codes, dv/dt issues, motor-cable length limits, bearing currents. Hazardous-Area Equipment Ex ratings, certified repairs, inspection grades, what a failed certification looks like.

Core References & Visuals

Key electrical reference points — switchboards, protection and motor systems.

Main switchboard with PMS and protection relays

Main switchboard — where paralleling discipline is tested.

MCC panels — every starter, every thermal setting, every log.

Drives & motors — start behaviour tells you more than a data sheet.

Checklists, SOPs & Test Records

The paperwork that actually earns its place in the ETO’s day — and holds up in audit.

Calculators & Tools Hub Every ETO calculator and data sheet indexed in one place. Test Record Bundle Insulation resistance, relay tests, UPS autonomy, thermographic sweep. Drawings & Compliance As-built drawings, class requirements, survey-ready electrical packs.