Pramac GBW 22 P 400V diesel generator with a 404J-22G engine

The Pramac GBW 22 P 400V is a professional-grade diesel generator designed to provide a stable three-phase power supply to sites where reliability, moderate fuel consumption and suitability for daily operation are key. The model delivers 17.6 kW of maximum power and 16.1 kW of rated power, making it well-suited for workshops, service facilities, construction sites, technical areas, farms, warehouses and as a backup power source for small commercial premises.

The unit is built around a Perkins 404J-22G diesel engine with a displacement of 2,220 cm³. This is a 4-cylinder in-line engine with natural aspiration, which operates with a mechanical speed governor and complies with the Stage V emissions standard. For a generator of this class, this configuration is highly effective: it combines a simpler design, reliable operation and good suitability for long-term use. Liquid cooling helps to maintain a stable operating temperature, which is particularly important during prolonged loads or when operating at higher intensities.

One of the model’s key advantages is the electric start via a 12 V battery system. This simplifies starting the generator and makes it practical in emergency scenarios where power needs to be restored to the site quickly following a mains power failure. It is also convenient for everyday use, as the generator does not require complicated procedures to start and is better suited for regular use by staff.

The electrical components of the model are also well-suited to professional tasks. The generator operates at 400 V, 50 Hz and is three-phase. It uses a Mecc Alte ECP28-M4 C brushless alternator with insulation class H and protection rating IP23. The documentation specifically states that voltage regulation is implemented via DSR, and accuracy in static mode is ±1%. This is an important clarification for users planning to power equipment that is sensitive to voltage stability. The manufacturer also emphasises that the 2/3 pitch winding design helps to handle non-linear loads more effectively and reduces the risks associated with harmonics. :contentReference[oaicite:4]{index=4}

In terms of autonomy, the model appears very practical. The generator is fitted with a 51-litre plastic fuel tank, and fuel consumption is 4.00 litres per hour at 75% load and 5.56 litres per hour at 100% load. This provides 12.75 hours of operation at 75% load and 9.17 hours at 100% load. For a diesel generator of this class, this is a good figure, allowing the model to be used both for backup power and for longer operating cycles without the need for frequent refuelling.

The generator is designed in a soundproof format with a liftable one-piece casing fitted with pneumatic supports. This design simplifies access to components during maintenance and makes servicing more convenient. The documentation also specifies anti-vibration mounts, a visual fuel level indicator, an external fuel filler neck, an oil drain pipe with a cap, and a central lifting point for movement. These are not merely technical details, but real advantages for day-to-day work on site, where ease of maintenance, convenience of transport and quick visual inspection of the unit’s condition are all important. :contentReference[oaicite:5]{index=5}

The model measures 1645×870×1060 mm, and its dry weight is 546 kg. The noise level is 66/95 dB, i.e. 66 dB at 7 m and 95 dB LwA. This makes the generator quite comfortable in its class for technical, industrial and commercial areas where noise is a concern, whilst still meeting the need for good power and autonomy.

Another important advantage is the availability of two control panel options. The MCP and ACP are available for this model. The MCP version features analogue gauges, an hour meter, an emergency stop button and a standard set of sockets: 1 x CEE 400V 32A, 1 x CEE 400V 16A, 2 x CEE 230V 16A and 1 x Schuko 230V 16A. In the ACP version, the generator is equipped with a digital control unit featuring advanced monitoring, automatic operation mode, remote start capability, a USB port and connection to an LTS load transfer switch panel. This means the model can be flexibly configured either for simpler local operation or for a more robust backup system with automatic start-up. :contentReference[oaicite:6]{index=6}

ThePramac GBW 22 P 400V is a well-designed diesel generator for those who require a reliable three-phase power supply, a modern Perkins Stage V engine, good runtime, convenient service access and the ability to choose a control configuration suited to their site. The model is well suited for both backup power and regular professional use in technical and commercial environments.