HYSTAT™15 – Indoor

6 to 15Nm3/h 

A HySTAT15 unit consists of a hydrogen generating unit with our proprietary IMET® cell stack, a control/power panel with controlled AC/DC conversion to produce hydrogen in a safe and reliable way. The maximum working pressure is 10 barg (30 barg optional) and the gas purity can be up to 99.999%.

With safety and reliability as key priority, every HySTAT™ features:

  • PROFIsafe protocol ensuring a safe shut down in case of control failure (PLC)
  • Fail safe logic for all parameters and inherent safe design (passive safety)
  • Uninterruptible Power Supply (UPS) ensuring a safe shutdown in case of power failure
  • Constant monitoring of gas purity (HTO)
  • Minimal gas presence in the system (only few Nm3 at full production)
  • Multiple redundancy on critical safety parameters.

The HySTAT™ H2 production is continuously monitored and rapidly adjusted to meet any actual user requirements. Every system is offered together with startup and commissioning at your site and with a training to provide your operator with the required knowledge to run the system. The HySTAT™ can be equipped with a variety of options.

System HySTAT 15
Delivery Pressure 10Barg (145PSI) (30Barg (435PSI) optional)
Type Alkaline Water Electrolyser
H2 Production 6 to 15Nm3/h (13 to 32 kg/24hr)
227 to 570 SCF/hr
105 to 268 SLPM
H2 Purity Without HPS: 99,9% (H2O saturated, Atm Dew point -20°C), O2 < 1,000 ppm
With HPS: 99,998% (99,999% as option); O2 < 2ppm; N2 < 12ppm
Atm. Dew point: -60°C; -76°F (-75°C; -103°F as option)
O2 Production Vented (O2 use as an option)
Installation area
Process Part:
Electrical and Peripherals:
Indoor, Atex zone 2 (unless optional ATEX enclosures), Dust free
Indoor, General Purpose Area, Dust free
Relative Humidity <95%
Altitude <500 meters
Approx. Weight Process (empty): 1.600kg
Power/Control Cabinet: 1’300kg
Dimensions (LxWxH) Process: 1.7m x 1.85m x 2.6m
Control/Power Cabinet: 1.0m x 0.5m x 2.1m
Electrical requirements
Power Consumption (all in) 4.9 kWh/Nm3 at full load (5.2 kWh/Nm3 as an option)
Installed power 145 KVA
Voltage 3 x 400 VAC ± 3% (3 x 480 or 575 VAC ± 3% as option)
Frequency 50 Hz ± 3% (60 Hz ± 3% as option)
Utilities Required
Electrolyte H2O + 30 % wt. KOH (+-180L)
Tap water to RO system 1.5 – 2 liters/Nm3 H2 (2 to 4 barg), depending on tap water quality
If no RO system, Demin water: < 1 liter/Nm3 H2 (2 to 4 barg)
Cooling water (electrolyte) Supplied by chiller
If not selected: Max t°: 40°C, Flow: 2m3/h (2 to 4 barg)
Cooling water (gas cooling) Supplied by chiller
If not selected: Max t°: 15°C, Flow: 0.15m3/h (2 to 4 barg)
Nitrogen for purge Approx. 1Nm3 per purge at 4 to 10barg
Instrument Air Not required
Alkaline Water Electrolyser
Alkaline Water Electrolyser


Hydrogen Purification System (HPS):

The Hydrogen Purification System (HPS) is designed to further purify the hydrogen to a minimum level of 99,998%. Impurities left in H2 will be: <10 ppm O2, <1 ppm H2O, <12 ppm N2, <50 ppb Cx Hx. Thanks to our technology, carbon contaminants are almost non-existent in our process.

Extra purity upgrade to 99.999%:

For special applications like electronics, Hydrogenics can supply additional purification equipment to reach grade 5 hydrogen purity by reducing the O2 and N2 content to 2ppm. Thanks to our technology, carbon contaminants are almost non-existent in our process.

ATEX enclosures:

Each electrolyser skid and hydrogen purification system (HPS) can be installed in an individual ATEX enclosure (compulsory for CE conformity). This enclosure will be equipped with forced ventilation allowing installation in a General purpose area (non-Ex).

Reverse Osmosis System (ROS):

If you don’t have demineralised water available onsite, we  can supply you a reverse osmosis system. The feed water treatment system (wall-mounted) will convert tap water into pure demineralised water needed for the electrolysis process.

Online Purity Measurement with blow off logic:

The H2 produced is continuously monitored in real-time on both water content (‘dew point’) and the oxygen content. This option can only be selected in combination with the HPS. The blow off logic will automatically vent the H2 to atmosphere in case its quality is out of spec.

Cooling system:

In order to cool down the system, a chiller can be supplied if the required cooling capacity is not available onsite. The chiller will send water through gas heat exchangers, significantly improving the gas purification efficiency. Depending on the requirements, a chiller can be used for the gas cooling, electrolyte cooling and compressor if selected.

Oxygen use:

As standard the O2 is vented to the atmosphere. Hydrogenics can implement an optional system to clean the O2 and make it available for further use/purification by the customer.

Compression system:

If your process needs higher pressure than the one delivered by the electrolyser, we can offer you complete packages including a compressor. The complete system will then be integrated together, providing simple installation onsite. Depending on the gas requirements we can provide membrane or piston compressors.


In order to provide additional security, you may require some hydrogen storage onsite. Hydrogenics has acquired expertise in providing full packages including storage at medium or high pressure according to the requirements.

Hydrogenics can offer you many other options to get to the best suited solution meeting your needs.