The silent diesel generator is an integrated power system that converts diesel fuel into electricity while containing engine noise within a sound-insulated steel enclosure. It supplies reliable power to machinery, job sites, or buildings when the grid fails or is unavailable in remote areas.
Technical Specifications
|
Module |
Key Specification |
|
Genset |
400 kW / 500 kVA (Prime)｜440 kW / 550 kVA (Standby) |
|
Electrical |
400/230 V｜50 Hz｜1500 RPM｜3-phase, 4-wire |
|
Engine |
Cummins QSNT-G3 / KTA19-G3A｜6-cylinder inline｜19.0 L |
|
Fuel Consumption |
≈205 g/kWh (≈102 L/h @ full load) |
|
Alternator |
Stamford HCI544C / S5L1D-D4 |
|
Voltage Regulation |
±1.0% (AS440) / ±0.5% (MX321 AVR) |
|
Insulation / Protection |
Class H｜IP23 |
|
Noise Level |
≤75 dB(A) @ 7m |
|
Control System |
DSE / SmartGen (full electrical & engine protection) |
|
Canopy |
Galvanized steel with fire-retardant acoustic lining |
|
Fuel Tank |
Approx. 8 hours operation (≈850 L) |
|
Dimensions & Weight |
4600 × 1650 × 2250 mm｜≈5200 kg |
Cummins Engine & Stamford Alternator Configuration
Cummins 19.0L Platform: Cummins QSNT-G3 / KTA19-G3A engine delivers a 25,000+ hour overhaul interval under continuous prime power.
Speed Control: Mechanical or electronic governor maintains speed within ISO 8528 G2 standards during step-load changes.
Stamford Alternator Coupling: Direct-coupled STAMFORD HCI544C / S5L1D-D4 alternator with 2/3 pitch windings suppresses 3rd harmonics on non-linear loads.
Class H Insulation: Vacuum-impregnated Class H copper windings (180°C limit) prevent moisture degradation in environments up to 95% relative humidity.
Silent Canopy & Noise Performance
Acoustic Attenuation: Achieves ≤75 dB(A) at 7 meters, complying with strict municipal noise limits near commercial zones.
Enclosure Durability: Powder-coated, electro-galvanized steel canopy resists C3/C4 marine corrosion.
Acoustic Lining: UL94 Class 0 flame-retardant sound insulation foam dampens high-frequency noise without fire hazards.
Exhaust System: Internal residential muffler lowers exhaust noise while staying under maximum allowable backpressure (<10 kPa).
Applications
|
Sector |
Application |
Key Benefit |
|
Healthcare |
Emergency backup power |
Supports critical loads during outage |
|
Data Center |
IT system backup |
Reduces risk of service interruption |
|
Construction |
Site power supply |
Suitable for noise-restricted environments |
|
Mining |
Remote primary power |
Operates in off-grid conditions |
|
Telecom |
Station backup power |
Maintains communication continuity |
|
Manufacturing |
Production backup |
Reduces downtime impact |
Load Response & Voltage Stability
Voltage Regulation: Standard AS440 AVR maintains voltage within ±1.0%; optional MX321 AVR tightens stability to ±0.5%.
Transient Response: Recovers output voltage to within 1% of nominal within 0.5 seconds after a sudden 50% load step.
Frequency Stability: Maintains steady-state frequency within ±0.25% across 0–100% load variations on the 400 kW prime rating.
Motor Starting: Delivers 300% rated current for 10 seconds to start heavy inductive electric motors without tripping.
Unbalanced Load Management: Handles up to 25% phase imbalance while preserving stable line-to-line output voltages.
Customization & OEM Options
• Standard 850 L base tank (~8-hour runtime), expandable to 1,000 L, 1,500 L, or external bulk fuel connections.
• Choice of Schneider, ABB, or Chint breakers paired with DeepSea DSE 7320 or SmartGen 6120 AMF controllers.
• Custom RAL colors, private-label branding plates, door badges, and distributor warning labels available.
• Factory jacket water heaters, lube oil heaters, and automated battery chargers support reliable starting at -25°C.
• Pre-wired terminal blocks ensure fast connection to automatic transfer switches for standby power.
Compliance & Certifications
|
Certificate / Standard |
Compliance Scope |
|
ISO 8528 |
Generator performance classification |
|
CE Marking |
EU safety and EMC compliance |
|
ISO 9001:2015 |
Quality management system |
|
ISO 14001:2015 |
Environmental management system |
|
IEC 60034-1 |
Alternator performance standard |
|
IP23 |
Protection rating |
Emissions & Safety
IP23 alternator and IP54 control cabinet casing shield live electrical terminals from dust and water spray.
Optional double-walled tank or 110% bunded canopy complies with local environmental fluid spill regulations.
Overcurrent, over- and undervoltage, reverse power, phase loss, earth leakage, and emergency shutdown protection.
FAQ
Q: Is the standard engine the QSNT-G3 or the KTA19-G3A?
A: The standard configuration uses the Cummins QSNT-G3, Cummins' current-generation electronically controlled 19L platform; the mechanically governed KTA19-G3A is available as an alternative.
Q: What is the warranty period for this generator set?
A: The standard factory warranty covers the engine, alternator, and control system for 12 months or 2,000 operating hours, whichever comes first.
Q: What is the complete power rating of this generator - prime and standby kVA?
A: This unit is rated at 400 kW / 500 kVA prime power, with a standby rating of 440 kW / 550 kVA for emergency backup applications.
Q: What is the minimum order quantity and standard production lead time for this 400kW model?
A: MOQ is 1 unit for project orders, with a standard lead time of 30-40 calendar days from order confirmation, depending on engine/alternator pairing and controller brand selection.
Q: What is the actual fuel consumption rate behind the 8-hour runtime on the 850L tank?
A: At 100% prime load, fuel consumption is approximately 95-100 L/h, giving roughly 8.5-9 hours of runtime on the standard 850L tank; consumption drops to approximately 65-70 L/h at 75% load.
