Rehoboth
Marine equipment
Rehoboth
Marine Equipment
Rehoboth
Marine Equipment
Rehoboth
Marine equipment
Rehoboth
Marine Equipment
Rehoboth
Marine Equipment
Rehoboth Marine Equipment Repair L.L.C provides vessel switchboard troubleshooting for marine electrical systems, attending onboard at Fujairah anchorage, the Port of Fujairah and other UAE ports from our workshop in the Al Hayl Industrial Area. We investigate earth faults, nuisance tripping, blackouts, synchronising and load sharing problems, protection relay mis-operation, and heat damage on main and emergency switchboards.
Switchboard faults are rarely where the alarm says they are. Our engineers work from the ship's electrical drawings and measured values rather than replacing components on suspicion, and hand over the cause and the test readings in writing so the finding survives the next inspection.
This is the sequence our engineers follow onboard - the same checklist a superintendent can hand to the ship's staff before we arrive.
We take the alarm printout and establish exactly what the plant was doing when the fault appeared - load change, generator start, heavy consumer cut in, or at rest.
The affected section is isolated and locked off, then checked for discoloured or slack connections, tracking marks, moisture ingress and salt or oil contamination inside the panel.
Busbar and terminal connections are checked for heating and re-torqued where required. Loose terminations are a common root cause behind repeat trips.
Insulation resistance is measured and the distribution split feeder by feeder to isolate the faulty circuit, rather than condemning the whole board or leaving the earth lamp indication unresolved.
Overcurrent, reverse power, under-voltage and preference trip settings are verified against the drawings, and breaker mechanisms, contacts and closing coils tested.
Governor and AVR response, droop settings, synchroscope and auto-synchronising function and kW/kVAr sharing between generators are checked under load.
If the fault sits on the machine, insulation resistance, polarisation index, AVR, rotating diodes and slip rings are tested - and a rewind quoted from our Fujairah workshop if the winding has failed.
After repair the section is re-energised in a controlled sequence, load tested, and the cause and readings issued to the vessel in a written report.
What the fault looks like from the control room, and where it usually turns out to be.
| Symptom | Where it usually points | What we do first |
|---|---|---|
| Earth fault lamps indicating on one phase | Moisture ingress, damaged cable or a failing consumer on one feeder | Insulation resistance measurement and feeder-by-feeder splitting to localise |
| Breaker trips on load change only | Protection setting mismatch, loose termination, or a partially failed contact | Verify settings against drawings, thermal check and re-torque of terminations |
| Blackout on generator changeover | Preference trip, synchronising or governor and AVR response | Check synchronising gear, droop settings and load sharing under controlled test |
| Uneven kW or kVAr sharing between generators | Governor droop and AVR cross-current compensation | Measure and adjust droop and excitation response on load |
| Burning smell or discolouration inside the panel | Loose or overheating connection, tracking across insulation | Isolate immediately, inspect, clean and re-terminate; test insulation before re-energising |
| Repeated generator trips with no board fault | Machine side - insulation failure, AVR, diodes or slip rings | Insulation and polarisation index testing, AVR and excitation checks, rewind advice if needed |
Call our marine electrical team with the alarm history and load condition. We attend at Fujairah anchorage and across UAE ports with test equipment and the drawings-first approach.
In most cases yes. The distribution is split feeder by feeder under controlled conditions with the ship's staff, so the faulty circuit is identified with minimum disruption.
Yes. Overcurrent, reverse power, under-voltage and preference trip settings are verified against the ship's drawings and breaker mechanisms and contacts tested.
The alarm printout, the electrical drawings, generator maker and rating, and a clear account of the load condition when the fault appeared.
Yes. Machines that need rewinding come to our rewinding bay in the Al Hayl Industrial Area, Fujairah and are returned tested, impregnated and dynamically balanced.