Product Overview
The AKSA APD688C is a heavy-duty diesel generating set built for dependable standby power use across commercial, industrial, construction, infrastructure, agricultural, and backup power applications. It delivers 688 kVA / 550.4 kW standby power, making it suitable for sites that require high-capacity 50Hz, 3-phase electrical supply.
Powered by a Cummins KTAA19G6A diesel engine, the APD688C uses a 6-cylinder, 18.9-litre, turbocharged and intercooled diesel engine running at 1500rpm. The engine features direct fuel injection, electronic governor control, water cooling, replaceable fuel, oil and dry element air filters, and a 12/24V DC starter and charge alternator system.
The generator is supplied with a brushless single-bearing alternator with revolving field design, 2/3 pitch stator, flexible disc rotor, Class H insulation, self-excitation, self-regulation, and solid-state automatic voltage regulation. This helps provide stable output for large standby loads and general electrical equipment used in critical backup power applications.
The APD688C is available in open, canopy, soundproof canopy, and container configuration. The generator set includes a heavy-duty base frame, integrated fuel tank options, flexible fuel connection hoses, manual oil sump drain valve, industrial exhaust silencer, steel bellows, starter battery with rack and cables, and service-friendly access for routine maintenance.
Key features
- 688 kVA / 550.4 kW standby power
- Cummins KTAA19G6A diesel engine
- 400/230V, 50Hz, 3-phase output
- 1500rpm engine speed
- 0.8 power factor
- 6-cylinder, 18.9-litre diesel engine
- Turbocharged and intercooled
- Water-cooled engine design
- Direct injection fuel system
- Electronic governor system
- Brushless single-bearing alternator
- 4-pole alternator construction
- Self-excited and self-regulating alternator system
- Solid-state automatic voltage regulator
- Class H alternator insulation
- IP21 standard alternator protection
- Open, canopy, soundproof canopy, or container configuration
- Suitable for standby, commercial, industrial, infrastructure, agricultural, and site power use
Technical summary
| Specification | Details |
|---|
| Manufacturer | AKSA Power Generation |
| Model | APD688C |
| Fuel type | Diesel |
| Standby power | 688 kVA / 550.4 kW |
| Prime power | Not specified in the data sheet |
| Voltage | 400/230V |
| Frequency | 50Hz |
| Phase | 3 Phase |
| Power factor | 0.8 |
| Engine | Cummins KTAA19G6A |
| Engine speed | 1500rpm |
| Engine power output | 610 kWm / 818 HP |
| Cylinders | 6 in-line |
| Displacement | 18.9 litres |
| Bore x stroke | 159 ? 159 mm |
| Compression ratio | 13:1 |
| Aspiration | Turbocharged and intercooled |
| Cooling | Water cooled |
| Governor | Electronic |
| Fuel consumption at full load | 140.9 L/hr |
| Fuel tank capacity | 700 L open / 1150 L canopy / 700 L container |
| Oil capacity | 50 L |
| Coolant capacity | 127 L |
| Radiator cooling air | 1055.3 m?/min |
| Engine air intake | 45 m?/min |
| Exhaust gas flow | 123 m?/min |
| Alternator type | Brushless single bearing, revolving field |
| Stator | 2/3 pitch |
| Rotor | Single bearing, flexible disc |
| Exciter type | Self excited |
| Alternator cooling | Direct drive centrifugal blower fan |
| Insulation class | Class H |
| Protection class | IP21 standard; IP22/IP23 available |
| AC waveform distortion | No load < 1.5%; balanced linear load < 5% |
| Telephone influence factor | < 50 per NEMA MG1-22.43 |
| Telephone harmonic factor | < 2% |
