Selecting the correct uninterruptible power supply requires balancing electrical load, runtime, voltage, and installation constraints. The XPCC UPS Selector is an engineering-based UPS sizing tool that calculates required UPS capacity and runtime capability from real project inputs.
Enter connected load in watts and required runtime in minutes. The Selector evaluates power and battery energy together and returns compatible XPCC UPS systems that can physically deliver the requested runtime at the specified load. Results can then be refined by voltage, topology, battery chemistry, mounting, and communications to arrive at a complete configuration.
Launch the XPCC UPS Selector →
https://xpcc.com/selector/
Rack-mounted lithium UPS system sized using the XPCC UPS Selector
UPS Sizing Tool for Load and Runtime Calculation
The XPCC UPS Selector follows the same methodology used by UPS application engineers when sizing and configuring power protection systems.
- Enter connected load (watts)
Total real power of all equipment to be protected. - Enter required runtime (minutes)
How long the UPS must support the load during an outage. - Review validated UPS matches
Systems that meet both power and runtime requirements. - Refine configuration
Filter by voltage, topology, battery type, mounting, and communications.
The Selector outputs configuration-ready UPS solutions with options and pricing that can be shared for specification or quotation.
Why Accurate UPS Sizing Matters
UPS sizing must satisfy both electrical capacity and stored battery energy. Selecting sufficient kVA without sufficient runtime capability is a common design error.
The XPCC UPS sizing tool evaluates load and runtime simultaneously, ensuring recommended UPS systems can deliver the requested minutes at the specified wattage.
Engineering-Based UPS Runtime Calculation
UPS runtime does not scale linearly with load. Battery discharge behavior and inverter losses vary with operating level.
The XPCC UPS runtime calculator uses validated battery discharge data combined with DC-to-AC conversion efficiency modeling. This produces realistic runtime-verified UPS matches rather than nominal catalog estimates.
UPS Configuration Filters
After initial sizing, results can be refined to match installation requirements:
- Voltage (120 V, 208 V, 240 V, 208/120 V)
- Topology (online, line interactive, standby)
- Battery chemistry (lithium or VRLA)
- Mounting (rack, tower, wall)
- Communications (local or network/SNMP)
This allows engineers and integrators to move from capacity sizing to deployable UPS configuration.
Advantages Over Manual UPS Selection
Manual UPS sizing using datasheets and runtime tables is time-consuming and error-prone. The XPCC UPS selector converts load and runtime directly into feasible UPS solutions using validated engineering models.
It automatically:
- calculates required UPS capacity
- evaluates runtime feasibility
- identifies compatible platforms
- outputs configuration-ready systems
This improves accuracy and accelerates UPS specification and quoting.
Applications
The XPCC UPS sizing tool supports selection across:
- IT and network infrastructure
- Edge and distributed sites
- AV and media systems
- Telecom and industrial controls
- Healthcare, retail, and education
- Facility and infrastructure systems
Size and Configure Your UPS System
Enter load in watts and runtime in minutes to calculate the correct UPS capacity and generate a technically valid configuration matched to your application.
Launch the XPCC UPS Selector →
https://xpcc.com/selector/