This can lead to nuisance tripping of circuit protective devices and in extreme cases can lead to malfunction or even complete failure and destruction of sensitive electronic equipment.

This is especially true in marine and offshore applications where the electrical supply is produced from generators and has a relatively high impedance. Large variable speed drive systems for propulsion, winches, drilling and fans can produce severe harmonic distortion of the supply.

We have many years experience in design and specification of large variable speed drive systems with generator based supplies and the associated harmonic countermeasures required to minimise distortion of the supply network or its detrimental affects on consumers.

For existing problem networks we can provide…

• Power quality survey, investigation, analysis and recommendations.
• Specification, supply & installation of harmonic mitigation measures including passive and active filters, constant voltage transformers and line conditioning equipment.
• Specification, supply & installation of clean power converters.

Please contact us to discuss your requirements in more detail.

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Thermal imaging cameras are a very useful non invasive tool that can be used to locate such faults and in the right hands can identify problems early and well before they develop into more serious defects.

We provide a full Thermographic Survey service with a clear and easy to read report that provides recommendations for any remedial action that is required.

Owners can then use this report to either take immediate action if the defect is serious or to plan the work for the next convenient opportunity such as a layover, port call, anchorage or refit period.

Particular attention is paid to essential and important equipment, failure of which may present significant safety hazards and all testing is carried out with equipment operating under normal operating conditions.

The photographs above are taken from one of our reports and show the main isolator for No.1 Start Air Compressor, clearly showing that the centre core is significantly hotter that the others. After confirming that the phase current balance was correct, further investigation revealed that the terminal connection on the isolator was loose.

We also offer a full range of electrical test & survey services including…

• Flash testing & general insulation (‘Megger’) testing.
• Testing & certification to 17th Edition IEE Wiring Regulations (BS7671).
• PAT testing.
• Fault location on LV and MV power cables.

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• Primary current injection.
• Secondary current injection.
• Overcurrent relay testing & calibration.
• Circuit breaker overhaul & service.
• Spare parts supply.

We are UK sales, service and spare parts agent for Hyundai Heavy Industries marine power products including their MCCB, ACB and VCB switchgear range (HAT, HiAN & HiAS).

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• Copperwork & busbar modifications.
• Switchgear upgrades and retrofits.
• Instrument testing and calibration.
• Control, synchronisation, load sharing and power management system upgrades.
• Switchboard cleaning, flash and spanner testing.
• Thermograhapic survey.

We also provide turnkey design and build solutions for switchboard extensions, feeder capacity upgrades and  installation of additional generators including…

• Survey & analysis.
• Technical and commercial advice on the most cost effective upgrade options.
• Preparation of detailed design drawings (AutoCad).
• Short circuit calculations.
• Load balance/analysis.
• Protection studies.
• FMEA, FMECA.
• Management of the document submission and class approval process.
• Project managment.

Please contact us to discuss your requirements in more detail.

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• Surveys, technical & commercial advice on the most cost effective upgrade options.
• Preparation of detailed electrical & mechanical design drawings (AutoCad).
• Equipment selection & specification.
• Switchboard & power management system design.
• Starter design including star-delta, autotransformer, electronic soft start.
• Variable speed AC & DC drive systems, harmonic calculations and mitigation measures.
• Power distribution system design.
• Control system design.
• Short circuit calculations.
• Load balance/analysis.
• Protection studies.
• FMEA, FMECA.
• Management of the document submission and class approval process.
• Equipment build, installation & commissioning.
• Project managment.

Please contact us to discuss your requirements in more detail.

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