HV & LV power systems

Power Testing Ltd (a MARCH company) specialises in high‑voltage power systems engineering and maintenance, supporting critical infrastructure where safety, compliance and continuity are essential. Operating primarily across 11kV networks, with supporting low‑voltage capability down to 415V, services include design, installation, testing, maintenance and 24/7 emergency response, including rapid deployment solutions to minimise downtime when power continuity matters.

High Voltage Power Systems Capability

Supporting the full lifecycle of high‑voltage power systems, Power Testing provides specialist services for safety‑critical and operationally complex environments, with integrated low‑voltage support where required.Specialist capability across high‑voltage power systems, primarily 11kV

  • Supporting LV systems as part of wider HV estates and infrastructure
  • Support spanning planning, delivery and long‑term operation
  • Expertise aligned to regulated, live operational sites
  • Services designed around safety, compliance and continuity

Electrical Maintenance & Asset Care

Keeping power systems reliable and compliant, planned and responsive maintenance is delivered to reduce risk, downtime and unplanned failures.

  • Scheduled inspections and preventative maintenance programmes
  • Condition‑based monitoring and asset health assessments
  • Defect identification with clear remedial recommendations
  • Maintenance of both modern and legacy electrical equipment
  • Support for long‑term asset performance and compliance

Projects & Installations

From HV upgrades to new connections, turnkey electrical projects are delivered with a focus on safety, continuity and minimal disruption to live operations.

  • High‑voltage electrical design, installation and commissioning
  • HV asset upgrades, replacements and new power connections
  • Delivery on live sites and during planned shutdowns
  • Managed projects from initial scope through to handover
  • Seamless transition from installation into ongoing maintenance

Emergency Response & Rapid Deployment

When power continuity is critical, rapid response support helps customers recover quickly and protect essential operations.

  • 24/7 emergency call‑out for electrical faults and failures
  • Rapid fault finding and outage response
  • Temporary power and continuity solutions
  • Deployment of 11kV package substations within 24 hours
  • Support during unplanned outages and critical incidents

Sectors

Experience across complex and regulated environments ensures electrical systems are supported safely and effectively.

  • Water utilities and wastewater treatment sites
  • Facilities management and commercial estates
  • Industrial and manufacturing operations
  • Infrastructure‑led and safety‑critical environments
  • Sites requiring high standards of compliance and continuity

How Services Are Delivered

A flexible delivery model combines in‑house expertise with specialist support to meet changing operational demands.

  • Experienced engineers, technicians and jointers
  • In‑house delivery supported by specialist partners where required
  • Scalable resourcing for maintenance, projects and emergencies
  • Strong focus on safety, quality and responsiveness
  • Consistent service across planned and reactive works

Contact Power Testing Ltd

Power Testing delivers LV & HV electrical engineering services focused on safety, reliability and rapid response. Whether it’s planned maintenance, a turnkey project or an urgent power fault, get in touch to speak to an expert by completing the contact form below or calling the team directly on 01245 266 800.

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    HV & LV power systems