A 125 kVA diesel generator set is a standalone, heavy-duty power unit that converts mechanical energy into three-phase AC electricity by burning diesel fuel to drive an engine.
It serves as an independent or emergency backup power source during grid failures, outages, or in remote areas without grid coverage.
Power & Engine
|
Item |
Specification |
|
Prime Power |
125 kVA / 100 kW |
|
Standby Power |
137.5 kVA / 110 kW |
|
Power Factor |
0.8 Lagging |
|
Load Acceptance |
ISO 8528-5 Class G2; 100% single-step load |
|
Overload Capacity |
110% Prime Power / 1 h per 12 h |
|
Engine Type |
6-Cylinder, 4-Stroke, Water-Cooled, Turbocharged |
|
Fuel Consumption |
24.5 L/h @ 100%; 18.2 L/h @ 75%; 12.8 L/h @ 50% |
Product Specifications
|
Item |
Specification |
|
Frequency / Speed |
50 Hz / 1,500 RPM; 60 Hz / 1,800 RPM Optional |
|
Voltage / Wiring |
3-Phase, 4-Wire, Star Connection |
|
Voltage Regulation |
±1.0% |
|
Generator Insulation |
Class H |
|
Circuit Breaker |
3-Pole MCCB |
|
Cooling System |
Closed Jacket Water Cooling; Up to 50°C Ambient |
|
Dimensions / Weight |
2,200 × 850 × 1,400 mm; 1,250 kg |
Three-Phase Alternator
Winding Material: Class H insulated 100% copper brushless alternator, preventing heat overload during continuous 24/7 prime power operations.
Harmonic Suppression: The 2/3-pitch winding design eliminates third-harmonic currents, protecting sensitive IT equipment and modern variable-speed drives.
Output Options: Standard 380V–415V at 50Hz, field-configurable to 220V–480V at 60Hz for multi-regional compatibility.
Excitation System: Self-excited rotating field with optional Permanent Magnet Generator (PMG) for starting high-inductance electric motors.
THD Limits: Total Harmonic Distortion remains under 3% at no-load and under 5% during a linear 3-phase balanced load.
AVR Voltage Regulation Performance
Voltage Regulation:
The Automatic Voltage Regulator (AVR) maintains terminal voltage within ±1.0%, preventing voltage spikes from damaging connected industrial machinery.
Transient Recovery:
Maximum 15% voltage drop on 100% single-step load acceptance, fully recovering within 0.5 seconds.
Motor Starting:
Delivers up to 180 skVA starting capacity for Direct-On-Line (DOL) industrial motors without tripping main breakers.
EMC Protection:
Built-in line-noise suppression ensures compliance with commercial power-grid electromagnetic compatibility requirements.
Chassis Design & Fuel Capacity
Chassis Construction: A heavy-gauge channel-steel base frame features integrated forklift pockets and dual overhead lifting points for convenient on-site transport.
Base Fuel Tank: Integrated 210-liter steel fuel tank provides 8 hours of uninterrupted operation at 100% prime load.
Vibration Isolation: Heavy-duty rubber isolators absorb engine vibration, preventing structural fatigue on mounting pads.
Maintenance Access: External oil drain valve and side-mounted spin-on filters allow routine servicing without stripping chassis parts.
Voltage Customization & Optional Equipment
Manual key-start, AMF auto-start, or SmartGen/DeepSea controllers with RS485 Modbus for remote telemetry.
Optional 3-pole 250A Automatic Transfer Switch (ATS) switches power from grid to generator in under 10 seconds.
Optional 1.5 kW 220V coolant jacket heater and automatic trickle charger enable reliable sub-zero starting.
Quality Verification
Factory Load-Bank Testing: Every unit undergoes load-bank validation across 0%, 25%, 50%, 75%, 100%, and 110% load steps before dispatch.
Safety Verification: Automated testing confirms emergency shutdowns for low oil pressure, high coolant temperature, and overspeed.
Standards Compliance: Built under ISO 9001/14001/45001 management systems, fully compliant with ISO 8528, CE, and IEC standards.
FAQ
Q: Does the cold weather kit's 1.5kW coolant heater require a separate power source when the generator is offline?
A: Yes, the coolant jacket heater and trickle charger require a standard 220V shore power connection while the generator is not running, typically wired through the same circuit as the site auxiliary power.
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 minimum order quantity and standard production lead time?
A: MOQ is 1 unit for project orders, with a standard lead time of 20-25 calendar days from order confirmation for standard voltage and control panel configurations.
Q: How much does adding the optional PMG excitation system improve motor-starting capacity compared to the standard self-excited system?
A: The standard self-excited system supports the rated 180 skVA DOL starting capacity; adding the PMG option extends sustained short-circuit current delivery to approximately 300% for 10 seconds.
Q: Is the 210L fuel tank runtime exactly 8 hours, or does it vary by load?
A: At 100% prime load (24.5 L/h), the 210L tank provides approximately 8.5 hours of runtime; runtime extends to roughly 16 hours at 50% load (12.8 L/h).
