Engineer-written guides on uninterruptible power supplies — how they work, how to size them, how to keep them running, and how to choose the right system for your load. Clear, technical and approachable.
A plain-English guide to what an uninterruptible power supply (UPS) is, how it works, the types available, and why every critical load needs one.
The differences between offline, line-interactive and online double-conversion UPS — and which topology is right for your application and budget.
A plain-English glossary of UPS and power protection terms — from VFI and double-conversion to N+1, hot-swap and SNMP — for engineers and buyers alike.
A practical guide to sizing a UPS correctly — converting amps to kVA, understanding power factor, allowing for inrush and planning for growth.
What determines UPS battery runtime, how to extend it, and how to choose between a graceful-shutdown window and hours of autonomy.
A practical, plain-English guide to choosing the right uninterruptible power supply — from listing your critical load to picking topology, runtime, redundancy and form factor.
A technical, decision-maker guide to matching UPS capacity, topology, runtime and redundancy to real-world load profiles, power quality and environmental conditions.
Maintenance and static bypass explained — what a bypass does, the difference between manual and automatic bypass, and why bypass is essential for uptime.
How N+1, 2N and isolated parallel redundancy work, what they cost, and how to choose the right level of redundancy for your availability target.
How UPS and standby generators work together — transfer sequencing, sizing, harmonics, fuel and testing to keep your site running through extended outages.
The nine most common mains power problems, what causes them, the damage they do, and how a UPS and conditioning equipment prevent them.
How the UK mains supply works — nominal voltage, tolerances, single vs three-phase, and why voltage variation affects your UPS and equipment.
How standby power fits into a business continuity plan — risk assessment, runtime targets, redundancy and testing to keep your operation running.
What preventative UPS maintenance involves, why it prevents failures, and what to look for in a maintenance contract — from battery testing to response times.
How remote UPS monitoring works, what a network card does, and the protocols (SNMP, Modbus, BACnet) that integrate UPS into your management systems.
How predictive maintenance uses impedance trending, remote monitoring and data analytics to catch UPS and battery failures before they cause downtime.
What MTTR and MTBF mean for UPS systems, how to calculate availability from them, and how redundancy and maintenance improve your uptime targets.
A guide to 5kVA UPS systems — what loads they suit, runtime expectations, single vs three-phase, and how to choose the right model for a small server or office.
A guide to 10kVA UPS systems — applications, single vs three-phase, runtime, redundancy and the Riello models that suit a 10kVA load.
A guide to 20kVA UPS systems — three-phase considerations, modular vs monolithic, redundancy and the Riello and Legrand models that suit a 20kVA load.
A guide to 30kVA UPS systems — three-phase sizing, modular vs monolithic options, runtime and the Riello and Legrand models that suit a 30kVA load.
A guide to 40kVA UPS systems — three-phase sizing, modular vs monolithic options, runtime and the Riello and Legrand models that suit a 40kVA load.
A guide to 50kVA UPS systems — modular architecture, N+1 redundancy, three-phase sizing and the Riello and Legrand models that suit a 50kVA load.
A guide to 60kVA UPS systems — three-phase modular architecture, N+1 redundancy, runtime and the Riello and Legrand models that suit a 60kVA load.
A guide to 70kVA UPS systems — three-phase modular sizing, redundancy, runtime and the Riello and Legrand models that suit a 70kVA load.
A guide to 80kVA UPS systems — modular three-phase architecture, N+1 redundancy, runtime and the Riello and Legrand models that suit an 80kVA load.
A guide to 90kVA UPS systems — modular three-phase architecture, N+1 redundancy, runtime and the Riello and Legrand models that suit a 90kVA load.
A guide to 100kVA UPS systems — modular three-phase architecture, N+1 redundancy, runtime and the Riello and Legrand models that suit a 100kVA load.
A guide to 120kVA UPS systems — modular architecture, parallel redundancy, three-phase sizing and the Riello and Legrand models that suit a 120kVA load.
A guide to 150kVA UPS systems — modular parallel architecture, N+1/2N redundancy, runtime and the Riello models that suit a 150kVA load.
A guide to 200kVA UPS systems — modular parallel architecture, N+1/2N redundancy, runtime and the Riello models that suit a 200kVA load.
A guide to 250kVA UPS systems — high-capacity modular parallel architecture, N+1/2N redundancy, runtime and the Riello models that suit a 250kVA load.
Our engineers will assess your load, runtime and redundancy and recommend the right system — no obligation.