GGW35G 35kVA Natural Gas Generator

Description

Pramac GGW35G – 35 kVA Natural Gas Generator

Generac gas engine. Mecc Alte output. Ready as long as the gas is on.

The GGW35G gas generator delivers 35 kVA / 28 kW emergency standby and 32 kVA / 26 kW prime power from a Generac 4 in line, 4450 cm³, naturally aspirated natural gas engine running at 1500 RPM with electronic ignition, 9.94:1 compression ratio and stoichiometric rich-burn combustion controlled by an exhaust lambda sensor. Output is delivered through a brushless Mecc Alte ECP32 1S/4C alternator at 400/230 V, 50 Hz, three phase, 0.8 power factor, with class H insulation, IP23 protection and DSR digital voltage regulation held inside 1%. Nominal current is 46.19 A, maximum 50.56 A, behind a 50 A circuit breaker. The engine needs an operating gas pressure of 1.7 to 3.5 kPa and draws 10.3 standard cubic metres of natural gas an hour at full standby load.

The canopy version is a galvanised sheet metal enclosure with high performance sound absorbing material, gasketed doors on steel hinges, wrapped exhaust piping, an exhaust silencer mounted in the upward facing discharge hood and a bottom power cable outlet, giving 67 dB(A) at 7 metres and a guaranteed sound power level of 96 dB(A). The canopy measures 2760 x 1130 x 1810 mm and weighs 1250 kg; the open version measures 2270 x 1100 x 1490 mm and weighs 895 kg.

The Power Zone Pro controller is an integrated genset control platform, NFPA 110 Level 1 compliant, with engine and alternator protective functions, digital engine governor control, programmable inputs and outputs, remote display capability, Modbus RTU, Modbus TCP/IP and 10/100 Ethernet communication, alarm and event logging with real time stamping, remote wireless software updates and BMS telemetry. The 4.3 inch resistive colour touch screen shows three phase voltage, current, kW, kVA and kVAr, frequency, engine speed, coolant temperature, oil pressure and temperature, battery voltage, hours, warnings, alarms, diagnostics and maintenance events. Protections cover high and low oil pressure, coolant level and temperature, oil temperature, over total kW, over and under speed, voltage and frequency, over current, battery voltage and charger current, and phase to phase and phase to neutral short circuits, with a three pole circuit breaker and emergency stop button.

GGW35G at a glance

• 35 kVA / 28 kW emergency standby, 32 kVA / 26 kW prime power
• Generac 4 in line gas engine, 4450 cm³, naturally aspirated, 9.94:1 compression ratio, 1500 RPM, electronic ignition
• Mecc Alte ECP32 1S/4C brushless alternator, 4 pole, class H, IP23, DSR digital regulation inside 1%
• 400/230 V, 50 Hz, three phase, 0.8 power factor
• Nominal current 46.19 A, 50 A circuit breaker, 100 Ah battery, 12 V electric start
• Natural gas consumption 2.95 sm³/h at 25%, 6.3 at 50%, 8.2 at 75% and 10.3 at 100% standby load
• Operating gas pressure 1.7 to 3.5 kPa, DN32 PN6 flanged connection
• Noise: 67 dB(A) @ 7 m, 78 dB(A) @ 1 m, guaranteed LWA 96 dB(A)
• Power Zone Pro controller with 4.3 inch colour touch screen, Modbus and Ethernet
• Canopy 2760 x 1130 x 1810 mm, 1250 kg; open version 2270 x 1100 x 1490 mm, 895 kg

Standard equipment includes an oil drain extension, heavy-duty air cleaner, fan guard, stainless steel flexible exhaust connection, factory-filled oil and coolant, primary and secondary fuel shutoff, DN32 PN6 flanged fuel line connection, electronic pressure regulator with automatic air-fuel ratio control, stoichiometric rich-burn combustion with exhaust lambda sensor, closed coolant recovery system, UV and ozone resistant hoses, factory installed radiator with 50/50 ethylene glycol, battery charging alternator, battery tray and cables, solenoid activated starter motor and the Generac electronic fuel ignition module. Options include a coolant pre-heating system (PHS), three way catalytic muffler (CAT), upsized alternator (UAL), alternator anti-condensation heater (ACH), permanent magnet generator (PMG), genset metal nameplate (GMN), automatic lube oil top up system (ALS), different canopy colour (DCC), four pole circuit breaker (TIF), auxiliary contact for remote signalling (TLP) and remote connection kit with antenna (RCG). An automatic transfer switch (ATS) is available as an accessory.

Ratings defined to ISO 8528-1:2005 at 1000 mbar, 25 degrees C and 30% relative humidity.

GGW Series – Natural Gas Generators

Clean-Burning. Reliable. Engineered for Standby Power.

The GGW Series is a range of natural gas generators built around Generac gas engines and Mecc Alte brushless alternators, packaged in an industrial canopy for facilities that want dependable, lower-emission standby or prime power from a mains gas connection. With no diesel to store or refresh, a gas generator is ready for as long as the outage lasts.

Key Features

• Generac gas engine with stoichiometric rich-burn combustion, lambda sensor and electronic pressure regulator with automatic air-fuel ratio control
• Primary and secondary fuel shutoff with DN32 PN6 flanged fuel connection
• Mecc Alte brushless alternator, class H, IP23, DSR digital voltage regulator
• Sound-attenuated galvanised enclosure with gasketed doors and upward facing discharge hood
• Power Zone Pro controller with 4.3 inch colour touch screen, NFPA 110 Level 1 compliant, Modbus and Ethernet communication
• Open and canopy versions available

Frequently Asked Questions

What gas pressure does a GGW generator need?

The operating fuel pressure and the gas consumption at each load are listed in the tables above for this model. Confirm supply pressure and capacity with your gas fitter before installation.

Can it be paralleled or connected to a transfer switch?

Yes. An automatic transfer switch (ATS) is available as an accessory, and the four pole circuit breaker (TIF), remote signalling contacts (TLP) and remote connection kit with antenna (RCG) are optional on the control panel.

How much gas does the GGW35G use?

At full standby load it draws 10.3 standard cubic metres of natural gas an hour, falling to 8.2 at 75% load, 6.3 at 50% load and 2.95 at 25% load, based on a reference gas of 0.73 kg per standard cubic metre and 37.6 MJ higher heating value. Supply pressure must be 1.7 to 3.5 kPa at the inlet.

Is an automatic transfer switch (ATS) included?

No. An automatic transfer switch is not included unless it is listed in the product description above. Ozwide Power can supply a correctly rated ATS with the generator, so ask for a package price when you enquire.