Starlight Shangchai (SDEC) series diesel electric generator adopts Caterpillar technology. Power range is from 55KW to 800KW. Generating set type includes open type generator, silent generator, trailer generator (with wheels) and container soundproof genset, etc. In this article, we mainly share 500KW 625KVA Shangchai diesel generator technical data as well as its engine features.
◎POWER RATING
Engine Speed | Type of Operation | Engine Power | |
rpm | kW | Ps | |
1500 | Prime Power | 555 | 755 |
Standby Power | 610 | 830 | |
◎ SPECIFICATIONS | ◎ FUEL CONSUMPTION | |||
ㅇEngine Model | SC27G830D2 | ㅇPower | lit/hr | |
ㅇEngine Type | V-type, 4 strokes, water-cooled, Turbo charged air-to-air intercooled | 25% | 34.7 | |
50% | 60.1 | |||
ㅇCombustion type | Direction injection | 75% | 87.5 | |
ㅇCylinder Type | Wet liner | 100% | 113.9 | |
ㅇNumber of cylinders | 12 | 110% | 126.4 | |
ㅇBore × stroke | 135(5.32) × 155(6.1) mm(in.) | |||
ㅇDisplacement | 25.8 (1574) lit.(in3) | |||
ㅇCompression ratio | 16 : 1 | |||
ㅇFiring order | 1-12-5-8-3-10-6-7-2-11-4-9 | ◎ FUEL SYSTEM | ||
ㅇInjection timing | 11.5°BTDC | ㅇInjection pump | Yijie in-line "P" type | |
ㅇDry weight | Approx.2250kg (4960 1b) | ㅇGovernor | Electric type | |
ㅇDimension | 1930×1686×1872mm | ㅇFeed pump | Mechanical type | |
(L×W×H) | (76×66.4×75.8 in.) | ㅇInjection nozzle | Multi hole type | |
ㅇRotation | Counter clockwise viewed from Flywheel | ㅇOpening pressure | 240 kg/cm2 (3414 psi) | |
ㅇFly wheel housing | SAE NO.0 | ㅇFuel filter | Full flow, cartridge type | |
ㅇFly wheel | SAE NO. 18 | ㅇUsed fuel | Diesel fuel oil | |
◎ MECHANISM | ◎ LUBRICATION SYSTEM | |||
ㅇType | Over head valve | ㅇLub. Method | Fully forced pressure feed type | |
ㅇNumber of valve | Intake 1, exhaust 1 per cylinder | ㅇOil pump | Gear type driven by crankshaft | |
ㅇValve lashes at cold | Intake 0.325mm (0.0128 in.) | ㅇOil filter | Full flow, cartridge type | |
Exhaust 0.375mm (0.0148 in.) | ㅇOil pan capacity | High level 65 liters ( 17.16 gal.) Low level 55 liters (14.52 gal) | ||
ㅇAngularity limit | Front down 25 deg. Front up 35 deg. Side to side 35 deg. | |||
◎ VALVE TIMING | ||||
Opening | Close | |||
ㅇIntake valve | 20°BTDC | 48°ABDC | ||
ㅇExhaust valve | 48°BBDC | 20°ATDC | ㅇLub. Oil | Refer to Operation Manual |
◎ COOLING SYSTEM | ◎ ENGINEERING DATA | |||
ㅇCooling method | Fresh water forced circulation | ㅇWater flow | 740 liters/min @1,500 rpm | |
ㅇWater capacity (engine only) | 48 liters ( 12.7 gal.) | ㅇHeat rejection to coolant | 74 kcal/sec @1,500 rpm | |
| ㅇHeat rejection to CAC | 35 m3/min @1,500 rpm | |||
ㅇPressure system | Max. 0.5 kg/cm2 ( 7.11 psi) | ㅇAir flow | 39 m3/min @1,500 rpm | |
ㅇWater pump | Centrifugal type driven by belt | ㅇExhaust gas flow | 99.5 m3/min @1,500 rpm | |
ㅇWater pump Capacity | 740 liters( 195.36 gal.)/min at 1, 500 rpm (engine) | ㅇExhaust gas temp. | 600 °C @1,500 rpm | |
ㅇThermostat | Wax-pellet type Opening temp. 77°C Full open temp. 90°C | ㅇMax. permissible restrictions | ||
Intake system | 3 kPa initial 6 kPa final | |||
ㅇCooling fan | Blower type, iron 1220 mm diameter, 6 blades | Exhaust system | 6 kPa max | |
ㅇMax. permissible altitude | 2,000 m | |||
◎ ELECTRICAL SYSTEM | ◆ CONVERSION TABLE | |||
ㅇCharging generator | 28V×55A | in. = mm × 0.0394 | lb/ft = N.m × 0.737 | |
ㅇVoltage regulator | Built-in type IC regulator | PS = kW × 1.3596 | U.S. gal = lit. × 0.264 | |
ㅇStarting motor | 24V×11kW | psi = kg/cm2 × 14.2233 | kW = 0.2388 kcal/s | |
ㅇBattery Voltage | 24V | in3 = lit. × 61.02 | lb/PS.h = g/kW.h × 0.00162 | |
ㅇBattery Capacity | 200 AH | hp = PS × 0.98635 | cfm = m3/min × 35.336 | |
lb = kg × 2.20462 | ||||
Alternator Data | |||
Output Power(KW) | 500KW | Structure | One-piece |
Excitation type | Brushless Self Excitation | Overload Capacity | 10% overload for one hour |
Insulation Class | H | Short-time Current | 150%10S |
Protection Class | IP22 | Mode of Connection | 3-phase, 4-line, neutral ground |
Rated Voltage | 380V/400V/415V | Power Factor | 0.8Lag |
| Rated Frequency | 50 Hz | Rated Speed | 1500rpm |
The SC25/27G series engine designed and improved by SDEC on the basis of the 12V135 diesel engine special for generator sets. The SC25/27G series engine is characterized by a major upgrade in product quality, reliability, economy, vibration, noise and appearance, especially, the SC27G’s stroke has been lengthened to 155 mm. Most parts of the SC25/27G series engine are interchangeable with those of the original model. Made in accordance with the SAIC MOTOR manufacturing standard, the SC25/27G series is a preferred power for common-used generating sets.
1. Engine reliability is improved by adopting one-piece cranshaft made of non-quenched and tempered steel and improved gaskets for all connections.
2. Symmetrical-design of two water pumps and two oil pumps improves cooling and lubrication capacities, reduces water tank volume, and adapts to applications in the regions with different ambient temperatures.
3. Two-section exhaust pipe and optimized leakproof structure reduce probability of leakage. The air intake manifold is changed into casting structure.
4. Redesigned fuel pipeline, improved other outside pipelines, air cleaner arrangement, and guard design, as well as reasonable layout make the engine appear more in sense of industrial design.
5. Fractured connecting-rod provides easy service and maintenance.
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