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Three-Phase UPS Installation | Brisbane Sydney Melbourne

Licensed three-phase UPS installation for data centres, hospitals, mining sites and large industrial loads, 10kVA to 2MVA.

Request a quote Call 1300 264 944

UPS Services installs three-phase UPS systems for Australian data centres, hospitals, mining sites, telco facilities and large industrial loads. We work across the full kVA range (from 10kVA modular up to 2MVA standalone) and can specify, install, and commission single-module, parallel, and N+1/2N redundancy configurations.

Three-phase installations involve switchboard-side work, neutral conductor sizing, phase balancing, and external maintenance bypass design, all delivered by licensed electricians under AS/NZS 3000. Battery cabinets and lithium-ion battery systems are specified to AS/NZS 5139.

We supply and install all major three-phase UPS brands: APC Galaxy VS / Galaxy VL, Eaton 9395 / 93PM, Vertiv Liebert APM2 / Trinergy / EXL S1, PowerShield Centurion Pro / Modular, Socomec MASTERYS, with manufacturer-trained technicians.

Three-phase sizing depends on more than headline kVA. We work from the critical load in kW and kVA, the load power factor, a growth margin, the redundancy target (N, N+1 or 2N), and the input characteristics that affect the upstream installation: neutral conductor sizing for non-linear loads, input power factor and harmonics, and generator compatibility where a standby set is present. Topology is the next decision, modular UPS for pay-as-you-grow scaling and N+1 in a single frame, or standalone for a known, stable load. For the full modular comparison see our modular UPS systems guide.

Commissioning is where a three-phase installation is proven. Manufacturer-trained engineers carry out a structured site acceptance test (SAT): load bank verification of the full rating, transfer-to-battery and transfer-to-bypass tests, parallel and redundancy checks for N+1 or 2N systems, protection coordination, and recorded measurements. You receive a complete SAT pack and the manufacturer commissioning sign-off required to validate warranty, plus a Certificate of Compliance for the electrical work.

Scope

Our service includes

9 discrete deliverables across the three-phase installation engagement.

  • 01Critical load and growth-margin assessment
  • 02Three-phase UPS sizing and topology design
  • 03External maintenance bypass panel design
  • 04Switchboard-side electrical works
  • 05Battery cabinet placement and ventilation review
  • 06Lithium battery systems to AS/NZS 5139
  • 07Parallel / redundant module commissioning
  • 08Load bank acceptance testing
  • 09Site acceptance test (SAT) documentation

Equipment

Types we service

  • Modular UPS (10–500kW)
  • Standalone UPS (50kVA–2MVA)
  • Parallel-redundant arrays (N+1, N+2)
  • Dual-bus / 2N installations
  • High-temp industrial UPS
  • Marine / shipboard UPS
  • Battery cabinets (VRLA, lithium)
  • Static transfer switches (STS)
  • Maintenance bypass panels (MBP)

Frequently asked questions

6 questions answered.

Q01

What is the difference between modular and standalone three-phase UPS?

Modular UPS systems use hot-swappable power modules in a single frame (typically 25kW or 50kW each), allowing pay-as-you-grow scaling and faster MTTR (mean time to repair). Standalone three-phase UPS uses a single fixed capacity tower and is generally lower CapEx for a known load. For data centres with variable growth, modular is usually the better long-term choice.

Q02

Do I need an external maintenance bypass panel?

Yes: for any three-phase UPS, an external maintenance bypass panel (MBP) is essential to allow servicing without dropping the load. The MBP is a make-before-break switching panel that lets technicians isolate the UPS for battery replacement, firmware updates, or fault investigation while critical loads continue running on raw mains power.

Q03

Can you commission UPS to manufacturer warranty requirements?

Yes. Manufacturer-trained commissioning is mandatory for warranty validation on most three-phase UPS systems (APC Galaxy, Eaton 9395, Vertiv Liebert APM2, etc.). Our commissioning engineers hold current factory training and provide the manufacturer commissioning sign-off required to activate full warranty coverage.

Q04

How do you size redundancy?

Redundancy is sized against your tier classification (Uptime Institute Tier I-IV) and acceptable downtime tolerance. Typical configurations: N (no redundancy) for Tier I, N+1 (one spare module) for Tier II/III, 2N (full dual-bus) for Tier IV / mission-critical. We can advise on the right sizing during the design phase.

Q05

What information do you need to size a three-phase UPS?

We need the critical load in kW and kVA (measured where possible), the load power factor, the runtime required before generator handover or clean shutdown, and your redundancy target (N, N+1 or 2N). On the installation side it helps to know the available supply, switchboard capacity and space, whether a standby generator is fitted, and any constraints on battery location and ventilation. With that we size the UPS and battery, recommend modular or standalone topology, design the external maintenance bypass, and produce a costed proposal. Our UPS sizing calculator gives a quick first estimate before a site visit.

Q06

Should I choose a modular or standalone three-phase UPS?

Choose modular when the load will grow, when you need N+1 redundancy in a single footprint, or when fast module-level repair matters, the system scales by adding hot-swappable power modules and a faulty module is swapped in minutes. Choose standalone when the load is known and stable and the lowest capital cost per kVA at full load is the priority. We size both options during design so the trade-off in capital cost, redundancy, footprint and serviceability is clear. Our modular UPS systems guide compares the Socomec MODULYS, APC Galaxy, Eaton 93PM, Vertiv Trinergy and PowerShield Modular ranges side by side.