Arkem Diesel Generator ARK-A 81 N5

ARK-A 81 N5 Diesel Generator – Reliable 80 kVA Power with Advanced Cooling and Efficiency

The ARK-A 81 N5 diesel generator, manufactured by Arken Generator, delivers 72.8 kVA prime and 81 kVA standby power at 1500 rpm with 400/230 V output and a 0.8 power factor. Powered by the ARKEM 4105ZLD 4-cylinder turbocharged and aftercooled engine, it ensures consistent performance with electronic governing and water-cooled operation. The NEKRA ARK 224G alternator with Class H insulation, IP23 protection, and 2/3 pitch winding offers high efficiency (up to 92.5%) and low THD (<5%). Its Trans-AMF control panel with DSE compatibility supports automatic operation, remote monitoring, and data logging. Certified to ISO 9001:2015, CE, ISO 8528, and Noise Directive 2000/14/EC, the ARK-A 81 N5 provides dependable power for both industrial and commercial applications.

Power Prime (kVA / kW)

72,8 / 58,2

Power Standby (kVA / kW)

81 / 64,8

Speed (r.p.m)

1500

Standard Voltage

400/230VAC

Power Factor(Cos Phi)

0,8
BrandARKEM
Power PRP [kW]63
Model4105ZLD
N° of Cylinders / Valves4/8
Engine Type4
Displacement [lt]4,087
AspirationTurbocharge and Aftercooler System
Bore[mm] x Stroke[mm]105x118
Compression Ratio17,5:1
Air FilterReplaceable Element
Cooling MethodWater Cooled (water + %50 antifreeze)
Total Coolant Capacity (lt)TBA
Governor TypeElectronic
Electrical System12VDC
Battery Charger Current750W
Oil Capacity [lt]11
Exhaust Gas Temp. [°C]305
Air Flow PRP [m3/min]560
Cooling Air Flow PRP [m3/min]TBA
Starter Power (kW)3,7kW
Standard Battery Voltage [V]12VDC
Standard Battery Capacity75Ah
Standard Battery TypeMaintenance-Free Lead Acid
BrandNEKRA
ModelARK 224G
Voltage400 /230 VAC
Number of Phase3
Power Factor0,8
Number of Poles4
Connection TypeStar
BearingSingle

Datasheet

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