What a 70kVA UPS is for
A 70kVA UPS (70 kW at unity pf) protects medium data centres, industrial control systems and large commercial installations. Three-phase supply is standard and modular N+1 architecture is typical.
Modular vs monolithic at 70kVA
A modular frame (Riello Multi Power, Legrand TriMOD HE) gives hot-swap modules and N+1 redundancy. A monolithic cabinet (Sentryum S3T up to 120kVA) is cheaper if redundancy and scaling are not required. For most 70kVA data centre loads, modular is the recommended path.
Efficiency and cooling
Modern 70kVA UPS reach 96–98% efficiency online. Even at 96%, a 70kVA UPS produces heat that must be removed — plan cooling and ventilation alongside the UPS. Energy Saving mode helps at low load by shutting down redundant modules.
Runtime, redundancy and models
External battery cabinets or lithium banks extend runtime to an hour or more. Build N+1 with a modular frame or parallel two monolithic units. Strong 70kVA options include Riello Multi Power, Sentryum S3T and Legrand TriMOD HE.
Frequently asked questions
Is a 70kVA UPS three-phase?
Yes, three-phase is standard at 70kVA.
Modular or monolithic at 70kVA?
Modular (Multi Power, TriMOD) for N+1 redundancy and growth; monolithic (Sentryum S3T) if redundancy is not required and cost matters.
How efficient is a 70kVA UPS?
96–98% in online mode, with Energy Saving mode improving efficiency at low load.
What runtime does a 70kVA UPS give?
Minutes on internal batteries; external cabinets or lithium banks extend this to an hour or more.