A 72 V family match and 1.5 kW load established the runtime test
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Eaton 9PX external battery modules are voltage-family products; the 9PXEBM72RT identifier carries a 72 V family that must match the UPS. Equipment record: Eaton 9PX3000RT, companion identifier 9PXEBM72RT. Decision: Connect the 9PXEBM72RT only to the supported 72 V 9PX3000RT configuration and accept the runtime target only after testing at the confirmed 1.5 kW load.
The 72 V family is the first check
An EBM connector does not prove voltage, battery declaration or firmware compatibility. The UPS model, EBM label, cable, present EBM count, battery age and load must be recorded together. Mixing an old internal battery with a new EBM can also distort runtime and recharge expectations.
For Eaton 9PX3000RT, the applicability boundary is anchored to 3000 VA, 2700 W and part 9PXEBM72RT. The 3 worked inputs remain assumptions until they are recorded at the equipment.
Use Eaton 9PX service and system information to arrange service for Eaton 9PX3000RT; confirm the complete equipment label before booking.
Figure 1. Eaton 9PX3000RT equipment and power path
9PX3000RT and EBM quantities
The controlling numerical record is: UPS rating: 3000 VA; UPS real-power rating: 2700 W; EBM voltage identifier: 72 VDC family; Worked added module: 1 EBM; Worked protected load: 1500 W; Worked autonomy requirement: 20 min target. Each value has a defined source or assumption status in the engineering ledger. Values from different configurations are not combined as though they came from one installed system.
| Engineering parameter | Value | Evidence status |
|---|---|---|
| UPS rating | 3000 VA | Published OEM value |
| UPS real-power rating | 2700 W | Published OEM value |
| EBM voltage identifier | 72 VDC family | Published OEM value |
| Worked added module | 1 EBM | Worked design assumption |
| Worked protected load | 1500 W | Worked design assumption |
| Worked autonomy requirement | 20 min target | Worked design assumption |
The 1,500 W load is 55.6 percent of the published 2,700 W rating. The 20-minute target is a design requirement, not a published result. Eaton runtime data for the exact UPS, EBM count and battery age is used to plan the test, and the loaded acceptance determines whether the target is met.
A 55.6 percent load target
The worked check uses load fraction = 1,500 W / 2,700 W. With a 1,500 W worked load and the published 2,700 W UPS rating, the result is 55.6% load. The EBM configuration passes only when it demonstrates the separate 20-minute requirement after full recharge. The arithmetic is reproducible, but it remains a design check until the listed inputs are confirmed at the equipment.
The 55.6% load result follows from load fraction = 1,500 W / 2,700 W. If the 1 EBM input changes, this check is repeated rather than carrying the earlier result into a different operating state.
Figure 2. Quantified basis for the Eaton 9PX3000RT decision
Compatibility before autonomy
The asset record verifies 9PX3000RT, 9PXEBM72RT, EBM cable and supported count. A 48 V, 180 V or 240 V EBM family is rejected even when the enclosure appears similar.
Commissioning updates the configured EBM count, checks charge state and alarms, and observes a controlled discharge at the confirmed load. Runtime is not inferred from the front-panel battery icon.
| Path | Technical consequence | Disposition |
|---|---|---|
| Apply the stated engineering decision | Connect the 9PXEBM72RT only to the supported 72 V 9PX3000RT configuration and accept the runtime target only after testing at the confirmed 1.5 kW load. | Selected basis |
| Generic model substitution | Select by family name or rating alone, without confirming the exact configuration. | Not selected on the stated evidence |
| Unverified operating assumption | Treat a design assumption as though it were a site measurement. | Reconsider only if the input changes |
Eaton and Powerware UPS service across Canada covers field measurements and service work for Eaton 9PX3000RT.
Confirm availability and catalogue details for Eaton 9PX3000RT or 9PXEBM72RT on the Eaton 9PX battery and EBM catalogue page.
The Eaton 9PX3000RT decision retains part 9PXEBM72RT, the 55.6% load calculation result and the manufacturer-published 3000 VA point in one equipment record. Applicable OEM instructions, qualified electrical authority and the installed single-line or wiring record remain controlling for any executable work.
Commissioning the added EBM
Acceptance of Eaton 9PX3000RT depends on five recorded checks:
- Read the complete 9PX3000RT and 9PXEBM72RT labels.
- Confirm the 72 V family, supported cable and EBM count from Eaton documentation.
- Record internal and external battery ages and charge condition.
- Measure the protected load and repeat the 55.6 percent calculation.
- After recharge, demonstrate the approved 20-minute target or record the shortfall.
The Eaton 9PX3000RT record is not accepted if part 9PXEBM72RT does not match, the calculation does not reproduce 55.6% load, or the final operating state is not recorded. The equipment returns to the approved safe state when a check stops, and the unresolved condition remains open without an invented repair result.
Figure 3. Verification sequence for Eaton 9PX3000RT
Runtime belongs to one exact configuration
The EBM match passes electrically at the exact 72 V configuration. Runtime remains a measured acceptance result at 1.5 kW, not a promise attached to the 9PXEBM72RT name.
Decision rule: Connect the 9PXEBM72RT only to the supported 72 V 9PX3000RT configuration and accept the runtime target only after testing at the confirmed 1.5 kW load. A different model, load, voltage, battery string, software version or operating state requires a new check against the applicable manufacturer record.
Sources
- Eaton 9PX3000RT SKU page
- Eaton 9PXEBM72RT SKU page
- Internal engineering reference: UPS Maintenance/UPS Battery Testing and Condition Assessment.md
- our service network, anonymized field-case library, used only where the text identifies a retained field fact.