Nautilus Electrics - Power Quality Analysis

Power Quality Analysis Service

Many businesses and facilities are losing money through inefficient electrical systems without even knowing it. Our Power Quality Analysis service uses professional-grade equipment — the Chauvin Arnoux PEL 104 — which is installed directly onto your electrical supply without any interruption to your operations. Over an agreed recording period, it continuously captures detailed data across all phases of your installation, building up a comprehensive picture of exactly how electricity is being consumed on your site.

There are many ways a Power Quality Analysis can benefit your business. The most immediate is cost savings — identifying inefficient equipment, unbalanced loads, or a poor power factor can directly reduce your energy bills, and in some cases eliminate penalty charges applied by suppliers. Beyond cost, the analysis can reveal harmonic distortion and phase imbalance issues that silently damage motors, drives, and sensitive electronics over time, helping you avoid unexpected equipment failures and costly downtime. For businesses subject to energy auditing requirements, the survey also provides documented evidence to support compliance with ISO 50001 and EN 16247-3, and can form a solid evidence base before committing to any significant electrical upgrades or new installations.

Once the recording period is complete, the data is analysed and compiled into a full technical report — covering all measured parameters in detail, including active, reactive and apparent power, power factor, phase balance, harmonic content and total harmonic distortion (THD). Alongside this, you will receive a clear plain-English summary of the key findings, written to be accessible regardless of your technical background, so the information is useful to engineers, facilities managers, and business owners alike.

The service is non-invasive, causes zero downtime, and is suitable for single-phase domestic premises right through to large commercial or industrial three-phase installations. Armed with both the detailed technical data and a clear summary of what it means for your business, you can make confident, informed decisions about your electrical infrastructure.

Ready to find out what your electrical system is really doing? Get in touch today to discuss your requirements and arrange a survey.

What's Included

Installation and removal of the monitoring equipment at a time that suits you
A recording period agreed in advance — typically between 24 hours and two weeks depending on your site and requirements
Full technical report including all measured parameters: voltage, current, active/reactive/apparent power, power factor (cos φ), phase balance, harmonics and THD
Plain-English executive summary highlighting key findings and their practical implications
Recommendations where relevant — whether that's equipment investigation, power factor correction, load balancing, or further investigation
All data retained and available on request for future reference or follow-up surveys

Typical Survey Scenarios

"Our energy bills have increased but nothing obvious has changed" A 48–72 hour survey across a working week can capture typical load patterns and identify inefficient equipment, unbalanced phases, or a deteriorating power factor that may be quietly inflating your bills.

"We keep having unexplained equipment failures or nuisance tripping" Harmonic distortion and voltage fluctuations are a common but frequently overlooked cause of premature equipment failure and spurious protective device operation. A survey during normal operating hours can capture the events contributing to the problem.

"We're planning a significant electrical upgrade or new machinery installation" Understanding your current load profile, spare capacity, and power quality baseline before committing to capital expenditure can save considerable time and money at the design stage.

"We need to satisfy an energy audit requirement" The survey data and technical report provide documented, independently recorded evidence suitable for supporting ISO 50001 energy management systems and EN 16247-3 energy audit compliance.

Frequently Asked Questions

Will the survey cause any disruption to my business? No. The monitoring equipment is connected using current clamps that fit around existing cables — there is no need to isolate or interrupt your power supply at any point during installation, the recording period, or removal.

How long does the survey take? Installation typically takes less than an hour. The recording period is agreed in advance based on your site and what you need to understand — this can range from a single working day to several weeks for more complex sites or seasonal variation analysis. Report turnaround is usually within five working days of the equipment being collected.

What size of installation is the service suitable for? The service is suitable for anything from a single-phase domestic or small commercial premises up to large three-phase industrial installations. If you're unsure whether your site is suitable, just get in touch and we can advise.

What happens after the report? The report and summary are yours to keep and share with whoever needs them. If any findings require further investigation or remedial work, we can advise on appropriate next steps — and if a follow-up survey is needed to verify that improvements have had the desired effect, we can arrange that too.

Do I need to be on site during the recording period? No. Once the equipment is installed and confirmed to be recording correctly, no further attendance is required until collection. You'll be given contact details in case you have any concerns during the survey period.

Prices vary depending on size of installation and type of reporting required. please contact us for more information

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