Sector
Data centres
Resilient HV commissioning and maintenance for mission-critical data centre power, where uptime and evidence of compliance are non-negotiable.
- Voltage range
- 11kV – 132kV
- Coverage
- UK-wide
- Support
- Commissioning, testing & SAP cover
What makes this sector demanding
- Zero tolerance for unplanned load loss during energisation and load transfer
- HV works sequenced inside wider L1–L5 commissioning programmes
- Concurrent maintainability and fault tolerance that must be demonstrated, not assumed
- Client, tenant and insurer witnessing of every critical test
How we support you
- Incoming HV switchgear and ring commissioning
- Transformer pre-energisation testing and phased energisation
- Protection coordination with the DNO and generator interface
- Load bank and IST support at the HV boundary
- Planned HV maintenance and SAP cover through operational life
HV work inside a live commissioning programme
Data centre HV commissioning is rarely a standalone package. It sits inside a staged programme where the HV system has to be proven early enough to support generator testing, UPS commissioning and integrated systems testing — but late enough that the installation is genuinely complete. Getting that sequencing wrong is the most common cause of programme slip on the electrical side.
We plan HV activities around those dependencies: what has to be energised to support the next test phase, which circuits must remain isolated, and what switching is required to move load without exposing a single point of failure. Every step is documented as a switching programme before anyone touches a handle.
Evidence that satisfies the witness
Data centre clients, their commissioning managers and their insurers all want the same thing: verifiable proof. Our test records are written to be witnessed — calibrated equipment traceability, settings revision references, as-found and as-left values, and clear pass criteria taken from the specification rather than from convention.
Through operational life
Once a facility is live, the HV system becomes the highest-consequence asset on site. We provide planned protection re-testing, thermographic and condition checks, and senior authorised person cover for switching, isolations and contractor access — so maintenance happens without eroding resilience.
Data centres — questions we get asked
- Can you work within our existing L1–L5 commissioning framework?
- Yes. HV activities are mapped to the relevant commissioning levels and integrated with the wider programme, including witness points and IST support at the HV boundary.
- Do you provide SAP cover for live data centre estates?
- Yes. We provide senior authorised person cover for HV switching, isolation, permits and contractor access on operational facilities.
Other sectors we serve
HV support for data centres
Tell us the voltage range, scope and programme dates. A commissioning engineer will come back to you — not a call centre.