Overview
Utilising all of our years of experience, we have designed the GenMan 20kVA Prime 22kVA Standby Generator to meet your critical power needs.Powered by the Volvo Esher collaboration, this generator brings quality and reliability together, ensuring uninterrupted performance. The canopies are built with robust materials, guaranteeing that we can lift, shift, and place these units in the most challenging circumstances. Expertly designed for superior performance and fuel efficiency, while the control panel will monitor your generator ensuring availability of power when you need it. In conjunction with GES Automatic transfer switches, we can enable a seamless transfer of power if it’s needed, ensuring uninterrupted operation. With 80% of spare parts available for next day delivery and integrated features like the fitted battery charger and jacket water heater, the GenMan Generator ensures your power needs are met with reliability. Trust Generator Man, the UK's leading supplier and installer of diesel generators, to deliver unparalleled power solutions.
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sIZE DIMENSIONS
Length (A):
1900mm
width (b):
950mm
Height (C):
1180mm
WEIGHT:
760kg
Generator Support Available
Installation Available
Servicing & Maintenance
Technical Support
Power & Performance
Prime Power Rating: 20 kVA / 16 kW
Standby Power: Up to 36 kW (short-term overload capability)
Voltage: 400/230 V
Frequency: 50 Hz
Power Factor: 0.8
Phase: 3-Phase
Engine: Yanmar 4TNV88-GGCA – reliable Japanese diesel engine
Engine Power: 21.1 kW (prime)
Speed: 1500 rpm
Aspiration: Turbocharged
Alternator: Mecc Alte – high-quality single-phase bearing design
Voltage Regulation: ±0.5%
Efficiency: 87.3%
Silent Enclosure & Build Quality
Sound Level: 65 dBA @ 7m (very quiet for a 20 kVA unit)
Enclosure: Robust CRC steel with powder coating (RAL 9001)
Canopy: Weatherproof, corrosion-resistant design
Silencer: Integrated residential-grade exhaust silencer
Made in Sheffield, UK – British engineering & assembly
Fuel & Runtime
Fuel Tank Capacity: 60 litres
Fuel Consumption:
100% load: 4.88 L/h
75% load: 3.71 L/h
50% load: 2.85 L/h
Control & Starting
Control System: Deep Sea 7320 MKII (or equivalent) – automatic mains failure (AMF) capable
Starting: 12V electric start with battery charger
Auto Start / Remote Start ready
Manual & Automatic operation modes
Cooling & Lubrication
Cooling System: Radiator with pusher fan + water-cooled engine
Lubrication: 7.4 L oil capacity
Oil Alert / Shutdown Protection
Electrical Protection
Overload, Short Circuit, Over/Under Voltage, Over/Under Frequency, Low Oil Pressure, High Engine Temperature protections built-in
IP Rating: IP23 (alternator)
Insulation Class: H
Dimensions & Weight
Dimensions: 1900 × 950 × 1180 mm (L×W×H)
Dry Weight: Approx. 760 kg
Additional Features
Base-mounted fuel tank with level gauge
Emergency stop button
12V battery & battery charger
Lift points and forklift pockets for easy handling
Comprehensive warranty & UK service support
Meets relevant EU standards