Datasheet

Medium-Voltage AI UPS

A medium-voltage UPS designed for grid-safe data centers

ON's patented AI UPS™ is the only medium-voltage UPS proven at scale, with 3 GW currently deploying across multiple hyperscale data center campuses. Validated at our 9.6 MW testbed at the National Laboratory of the Rockies, AI UPS exceeds NOGRR 282 and other emerging voltage ride-through requirements in MISO and PJM.

General

Rated power: 3.5 MW
BOL Duration[a]: 0.9 h
Double conversion efficiency: 95% at typical loading point
Auxiliary power: <65 kVA
Auxiliary configuration: 480 V, 4W, 3Ph + N
Communication: Modbus TCP/IP
Compliance: UL 9540 compatible, UL 9540A, UL 1973, UN 38.3, UL 1741, C22.2 No. 107.1-⁠16, IEEE 1547, NFPA 8055 2026, IEC 62040-⁠3 Class 1 (UPS Power Quality Requirements)
Architecture: Medium Voltage Series-Connected Double Conversion

Physical

Enclosure Specification: NEMA 3R
Ambient temperature (operation)[b]: -40°C to +50°C
Ambient temperature (storage): -40°C to +60°C
Relative humidity: 0 to 95% (non-condensing)
Corrosion rating[c]: ISO 12944 C3 (C4 optional)
Operating altitude[d]: Up to 2000 m
Cooling: PCS: Forced air Battery: Liquid-cooled Transformers: Non-Mineral Oil - Air Natural (KNAN)

Input

Input voltage: Up to 34.5kV
Voltage tolerance: ± 10%
Frequency: 50 / 60 Hz (configurable)
Power factor: Operating: 1 grid support (Q power): upon request

Output

Output voltage: Up to 34.5 kV (3Ph 4W)
Steady state voltage: Per ITIC & IEC 62040-3
variation: ± 0.5%
Frequency accuracy: ± 0.5%
Power factor: 0.95 lag.
Maximum fault current contribution: 125 % of rated current
THDv: <1%

Battery System

Technology: Li-ion (LFP)
Catalog capacity: 3.79 MWh DC
DC voltage range: 1250 - 1500 VDC
Charging/discharging rate: 1 C

Grid Code ComplianceMinimum Voltage Ride-Through Duration

AI UPS (MV UPS) vs ERCOT (NOGRR 282). Voltage in per unit versus time in seconds, comparing AI UPS and the grid-code ride-through envelope. — AI UPS (MV UPS) vs ERCOT (NOGRR 282). Open the image for a larger view.

AI UPS (MV UPS) vs PJM (Proposed). Voltage in per unit versus time in seconds, comparing AI UPS and the grid-code ride-through envelope. — AI UPS (MV UPS) vs PJM (Proposed). Open the image for a larger view.

AI UPS (MV UPS) vs MISO (Proposed). Voltage in per unit versus time in seconds, comparing AI UPS and the grid-code ride-through envelope. — AI UPS (MV UPS) vs MISO (Proposed). Open the image for a larger view.

Footnotes

[a]0.9hr Beginning of Life (BOL). Times will vary based on load profile and grid code required ramp rate.
[b]De-rates above 45°C, consult ON.energy.
[c]All control (sensitive electronics) enclosures are NEMA 4, power enclosures are NEMA 3R.
[d]De-rates above 2000 m, consult ON.energy.

All parameters to be confirmed during final contracting.
Contact: sales@on.energy

NOTICE: This document contains information, including design and specification details, regarding the patented and patent pending AI UPS product. It is intended only for evaluation purposes. Unauthorized use is prohibited.