Critical power upgrades for live data centres and critical sites.
Replacing or modifying UPS, generators and switchgear takes more than competent installation. The change has to be planned around the live operation, with interfaces, isolations, risk, commissioning and handover controlled throughout.
Keeping the lights on while the kit changes.
Ageing or changing critical power inside a site that cannot go offline.
UPS batteries are typically replaced every five to seven years, and each replacement has to fit around customer load and maintenance windows. Generator and switchgear changes carry the same constraint: the operation stays live while the kit comes out.
Primus is set up for this: a named senior lead, a method agreed with the site team before any work starts, and controls on every change through to commissioning and handover.
How Primus controls delivery.
Seven stages. Same discipline on every project.
Site survey
Walk the site with the operations team. Understand resilience, load, access and the operation around the kit.
Agreed methodology
Write the method with the client, not for them. Isolations, interfaces and sequence approved before work starts.
Isolation strategy
Define every isolation point, who owns the switch, what proves it dead, how it goes back live.
Project controls
Programme, risk register, change log and progress reporting on the client’s terms.
Change management
Every variation to method or scope approved against impact on the live site before it happens.
Commissioning
Witnessed tests against the agreed criteria. No step signed off without evidence.
Handover
Clean, complete, documented handover with O&M, test records and operational briefings.
What we deliver.
Three overlapping disciplines, delivered to one standard.
UPS & battery replacement
- UPS unit replacement on live load
- Battery string replacement & cycling
- Load bank testing
- Monitoring & alarms integration
Generator replacement
- Generator removal & install
- Fuel system, bunds & pipework
- Enclosure & acoustic works
- Load testing & commissioning
Switchgear upgrades
- LV & MV switchgear replacement
- Protection & metering upgrades
- Isolation strategy & interfaces
- Witnessed FAT & SAT
What buyers ask first.
Can a UPS be replaced without shutting down the data centre?
In most resilient configurations, yes. Load is held on the remaining UPS or a temporary supply while one unit is isolated and replaced, under a method agreed with the site team.
How often do UPS batteries need replacing?
Typically every five to seven years, depending on battery type, temperature and load.
Project evidence, not promises.
Outcomes are added as each client-approved case study is signed off. Metrics, images and references come from the project team, not the brochure.
Discuss a critical power project.
Share scope, resilience and site constraints. We will come back with a method and sequence.