High Voltage Engineering Services

PWB Power Group's engineers are market leading specialist Power Engineers and providers of complete, cost effective services to users of electrical distribution systems up to 400 kV.

Our services have expanded from straight forward LV/HV cable maintenance to complete turnkey power distribution packages. Other services include protection studies, system design, installation and commissioning of capital equipment plus HV/LV cabling services and associated civil works such as excavation, trenching and re-instatement.

Here is just a short list of our High Voltage Engineering services. Please click/tap on any service below to jump to that section.

Routine Maintenance and Inspection Service

Routine Maintenance and Inspection

Routine maintenance of high and low voltage plant should be carried out not simply to ensure reliable and economical service, but to comply with the provisions of the Health and Safety Executive. In addition, all maintenance and inspection is carried out as recommended by the equipment manufacturers and as required by BS 6626:1985 Code of Practice for Maintenance of Electrical Switchgear and Control Gear. Such works are implemented in compliance with the Electricity at Work Regulation 1989.

Only trained, competent, Authorised and Senior Authorised personnel are utilised by PWB Power Group. Our Engineers and Technicians are fully conversant with all varieties of electrical equipment, not to mention the differing handling, storing and disposal requirements.

PWB Power Group, strictly follow schedules of work and report on the condition of plant before and after remedial treatment with recommendations for future consideration. A comprehensive written report is issued to the client upon completion of work.

PWB Power Group, also cover commissioning, testing and fault location.

Partial Discharge Testing Service

Partial Discharge Testing

Partial Discharge testing is used to analyse the presence of any electrical discharge within areas such as cable termination boxes, busbar chambers and switchgear enclosures, and is a non-intrusive test which can be carried out by competent persons with substation access without the need for a power shutdown.

Thermographic Survey Service

Thermographic Survey

Thermographic testing has become an accepted method for diagnosing potential faults. This system of analysis is particularly useful when it is difficult to arrange power outages, as it is necessary to have the system live in order to detect high resistance joints. A comprehensive report is produced highlighting any anomalies that are found.

Emergency Response Retainer Service

Emergency Response Retainer

Emergency Response cover will ensure that you have a team of highly experienced, fully qualified professionals just a phone call away to resolve any network safety or performance issues. PWB Power Group, provide a range of flexible options to provide clients with the mix of Emergency Cover and Testing Services to suit any specific requirements.

Safe Working Systems

Safe Working Systems

Even during the construction of an HV network there is a legal requirement of customers under the provisions of the Electricity at Work Regulation 1989 to have appointed trained and competent staff. PWB Power Group can provide a ‘Safe System of Work’ for the operational control of the HV Network, during and after the construction phase utilising PWB Power Group Distribution Safety Rules and principally the provision of suitably trained and experienced ‘Senior Authorised Persons’. Through these staff we are able to provide temporary operational control of the network and manage the transition from construction phase though to client handover.

Switch Power Engineering Service

Switch Power Engineering

From design, procurement, construction, installation, commissioning, testing, operation and maintenance of electrical distribution systems PWB Power Group can provide a total Power Engineering service. Request information PWB Power Group HV cabling maintenance testing commissioning fault location medium voltage jointing HV engineers partial discharge senior authorised persons

Health and Safety Services

Health and Safety Services

PWB Power Group Health & Safety consultancy division, specializes in the delivery of safety, health and environment solutions globally.

Together with our clients, we design long term stratergies and solutions to achieve the most advantageous safety and enviromental performance.

We develop, execute, incorporate and uphold custom safety program management applications to adapt to customers explicit unique requirements. This goal is achieved through solid partnership and performance to incorporate the most effective solution to your business requirements.

Our client base is global and serves the transmission and distribution, renewable energy and wind energy industries.


High Voltage Engineering Project

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