What we supply

Single-phase online UPS for servers, network cabinets and instrumentation

Battery blocks sized to the required autonomy

Monitoring and shutdown signalling where the load must close down cleanly

Configuration inputs

Measured load in watts, not the sum of nameplate ratings

Required autonomy in minutes

Ambient temperature of the UPS location, which strongly affects battery life

Whether a generator supplies the site, and how the UPS behaves on it

Whether the UPS must signal equipment to shut down

Why autonomy is the usual source of disappointment

Backup time is set by the battery, not by the UPS rating. Capacity falls as load and temperature rise and as the battery ages, so the autonomy at installation is not the autonomy in year five. It is worth specifying on that basis from the start.