46-cell performance data
i-V curve and all 46 cell voltages
Who it is for
A 30 kW full stack for projects that build their own BoP
The 46-cell, 30 kW full stack is available now. Review what the first operation measured separately from the figures that are still design values.
Choose this product when
- Integrating a 30 kW-class stack into an industrial demonstration or hydrogen production plant
- System integrators able to design their own BoP, power, control and safety systems
- Projects evaluating modular scale-up from the 15 kg H₂/day design capacity per unit
EVIDENCE AND TARGET
What was measured on 46 cells, and what is still a design value
Review measured data and design values separately for the available 46-cell full stack when defining operating conditions and integration scope.
Full-stack engagement
Supply and technical review against integration conditions
Design values
Output, efficiency and consumption are 46-cell design figures
Included supply scope
- 46-cell HXS-30 full-stack design with power, electrolyte and gas connection specifications
- Measured 46-cell i-V and cell-to-cell voltage data with recommended operating conditions
- Exterior/enclosure-only STEP model on request (internal parts and flow fields excluded)
Customer preparation
- A DC power supply sized for the rated operating range (80 V · 360 A design basis; a supply able to deliver up to about 92 V is recommended to cover voltage rise during operation)
- Electrolyte circulation and temperature control matched to the product connection specification
- Gas-liquid separation and drying or purification equipment for the required purity
- Pressure and safety systems designed for up to 10 barg on the H₂ side with the anode at atmospheric pressure
Test results
Measured on the 46-cell full stack at first operation
The label on each chart says whether it is measured, test or design-target data. Test conditions are in each chart caption.
MEASURED01
Cell voltage was measured across current density on the 46-cell full stack.
Measured i-V curve · 46-cell full stack (18 September 2026 · 0.1 M KOH · 50 °C)
MEASURED02
The voltage distribution across all 46 cells is compared at 362.3 A.
Cell-to-cell voltage · 362.3 A · 0.1 M KOH · 50 °C (1.6602 V per cell = stack voltage ÷ 46; the 1.6562 V line is the mean of the 46 cell-voltage channels; spread 34.3 mV)
Specifications
HXS-30 specifications and supply terms
The specification table, support terms and review documents.
Complete product specifications17 items
| H₂ production | 6,900 NL/h (15 kg/day · design) |
|---|---|
| Outlet pressure | Up to 10 barg on the H₂ side |
| Efficiency (HHV) | 46-cell, 30 kW full-stack design 84% · approx. 47 kWh/kg-H₂ |
| Recommended operating condition | 0.1 M KOH · 50 °C (adjustable) |
| Operating temperature | Up to 80 °C |
| DC input | 80 V · 360 A (28.8 kW) |
| Water consumption | 6.1 L/h measured (360 A; 18.5 h continuous run, 22–23 September 2026; includes water carried out with the product gas) · electrolysis theory 5.6 L/h |
| 46-cell continuous run | 360 A constant current · 93.6 h without interruption (as of 26 September 2026, 13:08 KST; latest figures in the 46-cell technical note) |
| Number of cells | 46 |
| Electrode area · reference active area | Anode electrode area 600 cm² · cathode active area 512 cm² |
| Dimensions | 570 × 400 × 330 mm |
| Weight | 120 kg |
| Structure | Anode-side electrolyte circulation |
| Instrument calibration | Flow and gas analysers calibrated under KOLAS |
| End plate | SUS316L |
| Bipolar plate | Nickel-based metallic plate |
| Material change | Yes · we confirm the operating window and validation scope together |
Support, lead time and commercial terms3 items
Service & reassembly
Disassembly and reassembly require our dedicated gaskets and a hydraulic press, so conditions are agreed with us in advance. Return service can replace only the MEA and reuse the hardware; the service scope and terms are fixed in the quotation.
Availability & lead time
46-cell, 30 kW full stack available now · under long-term evaluation after first operation
Commercial terms & origin
EXW basis; DAP and other terms by agreement. Country of origin is the Republic of Korea, with certificate of origin provided.
Pricing depends on quantity, configuration and Incoterms, so it is issued as a quotation. The BoP budget (power, circulation, separation, drying and controls) depends on your integration scope; send it with the enquiry and we will review it together.