Inspection, Maintenance and Support

Our preventative maintenance regime is geared toward ensuring that your equipment works to the best of its ability and reflects your obligations under Health and Safety directives.

HVSS delivers maintenance and support across the UK

Our techniques include best practices from the electricity supply industry. Advanced diagnostics using thermal imaging, ultrasound scanning and ultraTEV’s will aid our approach to maintenance.

A maintenance inspection can include looking at protection relays and systems. You need to know that if you have an electrical fault, the system will operate appropriately – we therefore review protection settings, carry out injection testing to ensure correct operation, perform protection studies and, where necessary, more comprehensive network studies.

We also consider the mechanical elements to make sure that the equipment remains fit for purpose until the next maintenance cycle. We will look at oil seals where appropriate and provide advice on mitigation so that risk to the environment is minimised.

Our team can complete all aspects of work you require including providing an onsite presence for planned works or indeed an emergency call out facility. We minimise the impact of maintenance on your business by carrying out work at a time that suits you.

We can provide training for your own staff so that they are competent to complete basic site functions in relation to the high voltage assets you own, providing awareness training and substation access training. We can also review your existing safe systems of work.

Routine inspection of private electrical equipment

Where appropriate, we will sample the oil contained in your transformer so that an independent laboratory report can provide the latest intelligence on your electrical system. Inspections are an important and integral part of our service and complement a proactive preventative maintenance regime that supports your business.

Our highly skilled team knows exactly what to look for and offers solutions that are cost-effective and manageable. All records are held centrally so that easy access and updates can be made without delay.

Services we offer:

Working With HVSS

We offer complete design solutions. Working in partnership with you, so that you understand your options, giving you a competitive advantage.

Value For

Value for money is important to us – as it is to you. Pricing competitively is essential to maintain a successful business. We thrive on repeat business so pricing is key to our success.


We offer highly favourable payment plans to help ensure the outcome is beneficial to you.


Delivery equally adds value to any project. Our team will agree key project milestones and work with you to make sure your project is a success. Naturally, things happen on site that can’t be foreseen.

Dedicated Project

We are committed to delivery and healthy communication and our expertise and flexibility will help keep your project on track. Which is why with your own HVSS Project Manager, you’ll have a dedicated point of contact at all times.

Other Services

Whatever you do and no matter where you are located, HVSS will deliver a professional and effective service.

Multi-Utility Connections

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Special Projects

Inspections, Maintenance and Support

EV Charging


Testing &

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