Pramac GGW 70 G 400V gas generator

ThePramac GGW 70 G 400V is an industrial gas generator designed for facilities requiring a stable three-phase power supply, the capacity for continuous operation and a modern control system. The model is well suited to commercial buildings, technical facilities, service and production sites, engineering infrastructure, logistics facilities and other applications where the generator must not only start up in the event of a power failure, but also operate as a fully-fledged stationary power plant.

In the 50 Hz version, the generator operates on a 400/230 V network, has 3 phases and a power factor of 0.8. In LTP standby mode, the model delivers 70 kVA / 56.0 kW. This is sufficient to power large three-phase loads, engineering systems, pumping equipment, ventilation, workshops, service lines and other loads where not only the power itself but also the reliability of its supply is important. :contentReference[oaicite:2]{index=2}

One of the key advantages of this model is its gas platform, capable of running on either natural gas or LPG. This provides greater flexibility when designing a power supply system. If the site has a connection to the natural gas network, the generator can ensure stable, long-term operation without complex fuel logistics. If LPG is used, the model also allows for the construction of an efficient stand-alone backup system. At 100% load, the flow rate is 20.8 m³/h for natural gas or 8.1 m³/h for LPG, and at 75% load — 16.6 m³/h or 6.1 m³/h respectively. This makes the model convenient not only in terms of power output but also in terms of predictable operating costs.

At the heart of the generator is a 4450 cm³ Generac 4-cylinder in-line engine. This is a liquid-cooled, turbocharged gas engine with a rated speed of 1500 rpm and electric start. This configuration is well suited for stationary standby or continuous use, where the generator is expected to deliver smooth operation under load, a stable response to changes in demand, and high start-up readiness.

The generator unit is the Mecc Alte ECP 32-1L/4 C. This is a brushless alternator with insulation class H, protection rating IP23, 4 poles and an electronic voltage regulation system with AVR DSR. This configuration ensures more stable operation under load and is well suited for powering technical and commercial equipment where voltage quality and the reliability of the power section are important.

The Power Zone Pro control system deserves a special mention. This is a robust industrial-grade controller featuring a 4.3-inch colour touchscreen display, an event log, advanced diagnostic functions, programmable inputs and outputs, support for an external display, and remote monitoring via Modbus RTU, Modbus TCP/IP and 10/100 Ethernet. The screen displays three-phase voltage, current, kW, kVA, kVar, frequency, motor speed, coolant temperature, oil pressure and temperature, battery voltage, motor hour counter, service events and fault messages.

This model also features a very robust set of protection functions. The generator monitors high and low oil pressure, coolant level and temperature, oil temperature, overload, overvoltage and undervoltage, frequency, current overload, battery status, and short circuits between phases and neutral. For a stationary backup unit, this is of fundamental importance, as the installation must not only generate electricity but also protect itself and the connected equipment.

Standard equipment includes a reinforced air filter, an oil drain pipe, a fan guard, a stainless steel bellows, factory-filled oil and coolant, a redundant gas shut-off valve, a DN32 PN6 flanged gas pipe connection, an electronic pressure regulator, rich-burn mixture formation with lambda probe control, a radiator on the frame, EFI, and vibration mounts for the engine and generator. The enclosed version also features a sealed door, high-quality sound-absorbing material, a galvanised housing, a silencer in the soundproof compartment, and top-mounted air and exhaust outlets.

For the product listing, it makes sense to choose the version in the soundproof enclosure. It measures 2760×1130×1810 mm, weighs 1341 kg and has a noise level of 67 dB at 7 m / 96 dB LwA. This provides not only a powerful but also a more convenient solution for fixed installation. All in all, the Pramac GGW 70 G 400V is a robust mid-range industrial gas generator for those who require three-phase power, a reliable Generac or Mecc Alte engine, a modern controller and fuel flexibility.