90kVA Cummins Diesel Generator C90D5

The C90 D5 is a three phase diesel generator set for 415V supply, rated 90kVA (72kW) standby and 82kVA prime. A Cummins 6BTA5.9 G5 drives it, an inline six-cylinder diesel that is turbocharged and aftercooled and runs at 1500 rpm under an electronic governor. A Stamford alternator makes the power in a wye connection, and the starting system is 12 V DC.

Key features

• Standby and prime ratings come from the one set: standby is for emergency supply when the mains fails, and prime is for a varying load that runs for long periods.
• Turbocharging and aftercooling raise the density of the air entering the six cylinders, which lets the engine produce more power from the same displacement.
• An electronic governor controls the engine at its rated speed of 1500 rpm, which keeps the output frequency steady as the load changes.
• Three phase output at 415V suits three phase motors, pumps and compressors, which run on it directly.
• The cooling system is designed for an ambient of 54°C, which allows for hot site conditions.
• Lube oil capacity is 16.4 litres and coolant capacity, with the radiator, is 19.75 litres, which are the fill volumes a service has to cover.

Maximum fuel flow is 45 litres an hour. Cooling air flow is 3.44 m³/s at 12.7 mmH₂O, and 12.7 mmH₂O is the maximum static restriction on the cooling air. The installation needs to hold exhaust back pressure to 10.5 kPa or less and air cleaner restriction to 6 kPa or less.

What it will run

Size the set around the site: list the equipment that runs together, find the largest motor and allow for its starting surge, which typically runs to several times its running current. Keep the load balanced across the three phases, and pick the rating that matches the duty you expect. A set in this class typically carries the essential circuits of a commercial building, a pumping station, a processing line or a cold store. Check each appliance's compliance plate for its rating. Connection to a building's wiring must go through a changeover switch installed by a licensed electrician. Send us your load list and we will check it against the set.

The C90 D5 suits commercial and industrial sites that need standby power, including processing plants, pumping stations, cold stores and larger commercial buildings, and works that call for a prime supply where mains power is not available.

See the full large generator range.

Price on application. A set of this size is quoted to your configuration, any options and the installation site. Use Add to Quote on this page and we will come back to you with a price.

Key specifications

• Standby output: 90kVA / 72kW
• Prime output: 82kVA / 65.6kW
• Voltage: 415V, three phase
• Alternator: Stamford
• Weight: 1244 kg
• Dimensions (L x W x H): 226.8 x 109.4 x 157.6 cm
• Model code: C90 D5 (6B)
• Engine model: 6BTA5.9 G5
• Engine configuration: Inline 6 cylinder, turbocharged and aftercooled
• Engine speed: 1500 rpm
• Governor: Electronic
• Connection: Wye, three phase
• Starting voltage: 12 V DC
• Maximum fuel flow: 45 L/h
• Lube oil capacity: 16.4 litres
• Coolant capacity (with radiator): 19.75 litres
• Cooling air flow: 3.44 m³/s at 12.7 mmH₂O
• Maximum exhaust back pressure: 10.5 kPa

Part of the Cummins range at Gen4Sale.