The 40kW diesel generator set powered by a Weifang engine is a compact and cost-effective power solution designed for small commercial and light industrial applications. Built with a reliable Weifang K4 series diesel engine, this unit delivers stable performance, low fuel consumption, and easy maintenance.
40 kW Weifang Diesel Generator Set is supplied by Probe Power for buyers who need reliable generator, engine or power-equipment support with clear configuration, replacement and export communication. 40 kW Weifang diesel generator set for compact backup, small facility and site power requirements.
Description
The 40 kW diesel generator set powered by a Weifang engine is a compact and cost-effective power solution designed for small commercial and light industrial applications. Built with a reliable Weifang K4 series diesel engine, this unit delivers stable performance, low fuel consumption, and easy maintenance.
This model is an open-type diesel generator, with flexible options for soundproof enclosure, trailer, and canopy to meet diverse operating environments.
Key Features
Reliable Weifang diesel engine with stable output
Compact design, easy transportation and installation
Low fuel consumption (208 g/kWh)
Fast load response and stable voltage/frequency
Suitable for standby and light prime power applications
Technical Specifications
Generator Set
Item
Specification
Model
PRF40GF
Prime Power
40 kW
Standby Power
50 kVA
Rated Current
72 A
Voltage
230 V / 400 V
Frequency
50 Hz / 60 Hz
Dimensions
1725×650×1500 mm
Weight
650 kg
Engine
Item
Specification
Brand
Weifang
Model
K4100ZD
Prime Power
41 kw
Fuel Consumption
208 g/kWh
Cooling
Water-cooled
Alternator
Item
Specification
Brand
PROBE (100% copper brushless)
Optional Brands
Stamford / Leroy Somer / Marathon
Protection
IP22 / IP23
Applications
Small shops, offices, and residential backup power
Telecom base stations
Small construction sites
Agricultural equipment and water pumps
Temporary outdoor power supply
Optional Configurations
Soundproof canopy
Trailer-mounted generator
Rain canopy
Automatic control panel (ATS / remote monitoring)
Why Choose Us
Flexible customization based on project requirements
Stable supply chain and fast delivery
Full lifecycle technical support
Competitive pricing with high reliability
Q
What are the step-load acceptance capabilities, continuous fuel consumption rates, and engine architecture of this 40kW (50 kVA) Weifang generator set?
A
The 40kW / 50 kVA generator unit is driven by an industrial Weifang 4-cylinder, direct-injection, water-cooled diesel engine built for continuous prime power (PRP) and emergency standby applications conforming to ISO 8528 standards. Utilizing a robust mechanical in-line fuel injection pump and mechanical governor, the engine delivers stable transient torque to handle direct-on-line (DOL) starts for inductive electric motors up to 15kW, or up to 22kW utilizing star-delta starters or variable frequency drives (VFDs) without sustained voltage collapse. Under continuous prime operating conditions (75% to 100% variable load), brake-specific fuel consumption averages between 218 and 228 g/kW·h (approximately 10.0 to 12.5 liters per hour). The platform features an integrated skid-base fuel tank supporting 8 to 10 hours of autonomous continuous run-time, complete with a mechanical fuel level sender and fluid drain provisions.
Q
What circuit breaker protection, acoustic attenuation, and ATS automated switching features are configured for the 40kW Weifang platform?
A
At standard 400V/230V 3-phase 50Hz (or 480V/220V 60Hz), the 40kW unit operates at a continuous rated current of approximately 72 Amperes. Electrical distribution protection is handled by a chassis-integrated 100A 3-pole thermal-magnetic Molded Case Circuit Breaker (MCCB) configured for rapid trip isolation against overload and line faults. For outdoor or sound-sensitive perimeter environments, the unit is available in a weatherproof acoustic enclosure lined with flame-retardant rock wool insulation and an internal residential exhaust silencer, restricting noise levels to 68–71 dB(A) at 7 meters. The control console utilizes a SmartGen (HGM6120 series) or Deep Sea (DSE4520/DSE6020) digital controller with Automatic Mains Failure (AMF) logic, supporting automated two-wire dry-contact remote start commands to interface directly with an external Automatic Transfer Switch (ATS).
For more information, please contact us.
Our professional team can provide scientific configuration recommendations and one-stop integration services based on your installation environment, operating mode, compliance requirements, and budget, ensuring optimal performance and lifecycle value.
