S-Series is optimised to maximise reliability, life-time and efficiency - also in sub-zero temperatures. The fuel cells in the S-series are available in the power ratings 50, 500, 1000 and 2000 W. Fully integrated power units based on cuttingedge technology, innovative solutions and fundamental understanding. Fuel cells – An alternative if you have low power needs (< 2 kW) and large energy needs (> 10 kWh).

Advantages
• Maintenance free
• No self-discharge
• Known energy capacity
• Full performance in cold
• Heat tolerant
• Load following output
• Longevity
• Low operation cost
• Compact
• No waste problems or costs
• No emissions

Applications
• Telecom backup power
• Radio communication relay stations
• Emergency transmitters
• Military sensor equipments
• Uninterruptible power supplies (UPS)

Technology
• Control system with optional Internet capabilities and alarm functions via email & SMS
• Components optimised for longevity and low power consumption
• Liquid cooling for longevity
• Low pressure air feed for higher efficiency
• Membrane humidification for high performance and longevity
• CE compliance
• 1 year warranty

Fuel Cell System:                                              S-500

Nomial Power                                                    50 W
Current                                                                 0 - 50 A
Voltage Output (raw)                                         12 - 18 VDC
Dimensions(mm)                                             471 x 281 x 413
Weight (kg)                                                         22
Operating Time 12-pack                                  10 days

Energy Storage:                                                4-pack        12-pack        24-pack
Nominal Energy:                                                40 kWh       120 kWh       240 kWh 

Performance:
Efficiency (at nominal power)                          47 %
Efficiency (at 20 % load)                                   48 %
FC Start-up time >0 °C                                     3-300 s
FC Start-up time <0 °C                                     1 min – 15 min
Transient behaviour 20%-100% load           < 0,1 s
Power to load at black-out                               Seamless with battery (S-2000 Telecom)
Transient behaviour 20%-300% load           Seamless with battery (S-2000 Telecom)
Fuel                                                                      Industrial grade hydrogen1
Longevity                                                             > 20 000 h at nominal power
Ambient temperature, operating                     -33 to +45 °C

Fuel:
Quality                                                                  Industrial grade hydrogen
Supply pressure                                                3-8 bar
Connection                                                         6 mm Swagelok®

Exhaust:
Composition                                                       Humid air
Temperature                                                       Typical 30-50 °C

Operating Conditions:
Ambient temperature in use                            -33 till +45 °C
Ambient temperature in storage                     -40 till +60 °C
Ambient humidity in use                                    Non condensing
Ambient humidity in storage                             Non condensing     

Electrical Interface:
Power                                                                    Screw terminals (16 mm2)
RS 232                                                                  9 pin female D-sub connector (wiring in manual)

Conformance:
General                                              CE-certification (EMC 89/336/EEC, LVD 93/68/EEC)
Power supply interface*                  ETSI EN 300 132-2
Environment*                                    ETSI EN 300 019-1-3

Cellkraft AB warrants its products against defective parts and workmanship and will repair or (at its option) replace any instrument which are or may become defective under proper use within 12 months from the date of delivery to the customer. This warranty does not cover damage caused by accident, abuse or abnormal operating conditions.

Defective goods must be returned to Cellkraft AB premises accompanied by a detailed description of any issue. Cellkraft AB shall not be liable for any loss or damage whatsoever or howsoever occasioned which may be a direct or indirect result of the use or operation of the Contract Goods by the Buyer or any Party.

This warranty covers instruments and parts sold to the Buyer only by authorized distributors, dealers and representatives as appointed by Cellkraft AB. The warranties set out in this clause are not pro rata, i.e. the initial warranty period is not extended by virtue of any works carried out there under.