Long term stable operation of SDEC 255KW diesel generator set

⚙️ I. Power System Performance
High-efficiency diesel engine

Model SC9D340D2: 6-cylinder in-line design, bore/stroke 114/144mm, displacement 8.82L, compression ratio 16.5:1, with electronic speed control and direct injection fuel supply technology, standby power 255kW, common power 250kW.

Fuel Economy: Fuel consumption under standard working conditions ≤ 195g/kW-h, oil consumption ≤ 0.3g/kW-h, using domestic 0# light diesel, lower operating costs.

Cold start capability: 24V DC starter system, supporting -15℃ low temperature start (need to be equipped with water jacket heater), applicable to severe cold environment.

Enhanced heat dissipation and emission control

Closed water-cooling system, equipped with 40L large-capacity water tank, ensures the cooling efficiency of continuous high-load operation.

Meet the national standard JB8891-1999 emission requirements, exhaust smoke ≤ 1.5 FSN, noise ≤ 105dB (7 metres from the unit).

🔌 Second, power generation performance and reliability
Generator matching

Standard match with Shengfeng SF-250-4 generator (pure copper winding, H-class insulation), voltage fluctuation rate ≤±0.5%, frequency fluctuation rate ≤±0.5%, support three-phase four-wire 400/230V output, suitable for power supply of precision equipment.

Automatic voltage regulation (AVR) technology, transient voltage adjustment rate of +20% ~ -15%, more stable to deal with sudden load.

Overload and Protection Capability

Support 150% of rated current (2 minutes) and 120% over speed (2 minutes) operation, short circuit withstand up to 3 times the rated current for 3 seconds.

Output circuit breaker and electronic protection module are standard, with optional automatic parallel connection (parallel) or ATS switching cabinet.

🌍 III. Environmental adaptability
Plateau and high dust environment

Adopting J98/J114b exhaust gas turbocharger, power attenuation <3% at 5000 metres above sea level.

Germany three-stage cyclone air filter + low temperature seepage ceramic piston ring, effective anti-dust abrasion, suitable for desert/mining area.

Structural Strengthening Design

Gantry body + integral crankshaft to reduce vibration; wet cylinder liner to enhance heat dissipation efficiency.

Steel base + rubber shock absorber to reduce running noise resonance; optional container type or silent cover model.

🏗️ IV. Structure and maintenance convenience
Compact size: the unit has a shape of 2500×890×1350mm and a weight of 1600kg, which is convenient for the layout of the machine room.

Modular maintenance: dry air filter, dual fuel filter, oil filter integrated design, reduce the risk of oil/water leakage, maintenance cycle is extended.

📜 V. Certification and after-sales service
Quality standard: It conforms to ISO 8528 international standard, passed ISO9001 certification, and won the title of ‘China Famous Brand Product’.

National Warranty: Shangchai covers 300+ service stations, providing 1 year or 1000 hours warranty (first-come-first-served) and 24-hour emergency response.

📊 Key Parameters Quick List
Category Parameter Details
Diesel engine SC9D340D2, 6 cylinders, displacement 8.82L, electronic speed control, standby power 255kW
Generator Shengfeng SF-250-4, pure copper, H-class insulation, IP23 protection, AVR regulation
Electrical performance 400/230V, 50Hz, output current 450A, power factor 0.8
Fuel/oil consumption 0# diesel, 195g/kW-h (fuel), ≤0.3g/kW-h (oil)
Environmental adaptation 5000m altitude power attenuation <3%, support -15℃ start, noise ≤ 105dB (7m)
Size/Weight 2500×890×1350mm, 1600kg
With high cost performance, strong environmental adaptability and perfect after-sales system, Shangchai 255kW unit has become a reliable choice for industrial backup power. If you need customised solutions for specific scenarios (e.g. marine, automation parallel operation), you can refer to the manufacturer's technical documents for further optimisation.