Eaton 9390 UPS — Service, Battery & Migration Canada

⚠ Discontinued — batteries and service still available

Eaton 9390 —
Service, Battery & Migration Canada

The Eaton 9390 is a legacy three-phase online double-conversion UPS covering 40 to 160 kVA. Discontinued and replaced by the Eaton 93PM, the 9390 remains widely deployed in Canadian government buildings, hospitals, and university facilities. We provide battery string replacement, capacitor service, preventive maintenance, and migration cost-benefit analysis to current-generation platforms.

Request Service QuoteFull Specs

Eaton Service Canada is an independent service provider — not affiliated with Eaton Corporation®

⚠️ EOSL status: The Eaton 9390 has been discontinued and replaced by the Eaton 93PM. Eaton no longer provides OEM service. Battery strings, fans, and most control boards remain available through independent suppliers. DC bus capacitors on units older than 10 years are a critical failure risk — proactive testing and replacement is strongly recommended.

Technical Specifications

Eaton 9390 — Legacy Three-Phase UPS

Eaton 9390 Specifications
Output capacity40–160 kVA
TopologyOnline double-conversion
ArchitectureMonolithic (non-modular)
Input voltage208V or 480V (3-phase)
Output voltage208V or 480V (3-phase)
Transfer timeZero (true online)
BatteryExternal VRLA battery cabinets
StatusDiscontinued — no OEM support
Replaced byEaton 93PM (modular three-phase)

9390 vs Powerware 9315: The 9390 succeeded the Powerware 9390 (same product, rebranded after Eaton acquired Powerware in 2004). It sits between the smaller 9315 (10–160 kVA) and the larger 9395 (225–1,200 kVA) in Eaton’s legacy three-phase lineup. All three are now discontinued and serviceable through our independent supply chain.

Battery & Components

What we can still service

🔋 Available Service & Parts

Despite EOSL status, most 9390 components remain serviceable:

  • Battery strings — full replacement with OEM-compatible VRLA cells
  • Cooling fans — standard industrial replacements
  • DC bus capacitors — testing and replacement (critical at 8+ years)
  • AC filter capacitors — available through industrial supply channels
  • Control boards — limited availability; sparing recommended
  • Static bypass switch — contact replacement and testing

Critical risk: The 9390’s IGBT inverter modules and main control logic boards are becoming scarce. If your 9390 experiences an inverter failure, repair may cost more than migration to a new 93PM. Contact us for a pre-failure assessment.

Quote 9390 Service or Migration
Request a Quote

Eaton 9390 — service or migration assessment

Eaton 9390 Quote Request

Email us your details — we quote units, batteries, installation, and service contracts. Quote back within one business day.

Include in your email:
  • What you need: Battery string replacement / Capacitor / fan service / Migration assessment (93PM) / Preventive maintenance contract
  • Model (or serial number for battery matching)
  • Quantity and delivery postal code
  • Unit age? Last battery replacement? Capacitor history? Any alarms or failures? Budget for migration?
✉ Email Quote Request ☎ Call 1 (438) 881-3363

Or email directly: support@gdftech.com · Quote back within 1 business day

Migration Paths

Replacing the Eaton 9390

Eaton 93PM

15–200+ kW modular
Hot-swap modules, N+1
Direct 9390 replacement

Eaton 9395P

225–1,200 kVA
Monolithic, high density
For larger 9390 loads

Powerware 9315

10–160 kVA legacy
Same era as 9390
Also serviceable
FAQ

Eaton 9390 questions

Is the Eaton 9390 still serviceable? ▼
Yes, with limitations. Battery strings, fans, and capacitors are available through our independent supply chain. Control boards and IGBT inverter modules are becoming scarce. We provide a written assessment of remaining useful life and parts availability specific to your unit’s serial number and configuration.
Should I replace my 9390 or keep maintaining it? ▼
It depends on your unit’s age, component condition, and remaining useful life. If batteries and capacitors have been replaced within the last 3–5 years and the inverter is healthy, ongoing maintenance may be cost-effective for another 3–5 years. If the unit is 12+ years old with original capacitors, or if you’ve experienced any inverter or control board faults, migration to the Eaton 93PM is likely the better investment. We provide a written cost-benefit comparison.
What replaces the Eaton 9390? ▼
The Eaton 93PM is the direct replacement. The 93PM provides modular architecture (hot-swappable power modules), higher efficiency (97.4% vs the 9390’s ~93%), smaller footprint, and built-in N+1 redundancy. For 9390 units in the 40–160 kVA range, a 93PM frame with 2–4 power modules is the typical migration path.
How often should 9390 batteries be replaced? ▼
VRLA battery strings in the 9390 last 3–5 years depending on ambient temperature and discharge events. We recommend impedance testing annually starting at year 2. For units in mission-critical facilities, proactive replacement at 3–4 years avoids the risk of battery failure during an outage.
Do you service 9390 systems in government facilities? ▼
Yes. The Eaton 9390 was widely deployed in Canadian federal and provincial government buildings during the 2000s and 2010s. We hold active federal contracts and our technicians undergo security clearance for government data centres and secure facilities. Many 9390 units remain in active service protecting government IT infrastructure.

Eaton Service Canada is an independent service provider. Not affiliated with Eaton Corporation®. All trademarks remain property of Eaton Corporation.