400kw/500kVA Cummin Natural Gas Engine Generator

• Customization: Available
• After-sales Service: Local Network
• Warranty: One Year
• Model NO.: CM400C19N
• Gas Source: Natural Gas
• Certification: CE
• Power: 400kw
• Standard: Standard
• Natural Gas Engine Model: K19n-G4
• Alternator Model: Kwise
• Rated Volt: 400V/230V
• Rated Frequency: 50/60Hz
• Power Factor: 0.8
• Rated Speed: 1000rpm/1200rpm
• No. of Cylinders: 6
• Cylinder Bore: 159mm
• Piston Stroke: 159mm
• Displacement: 19L
• Exhaust Temp Before Turbo: Less Than 600ºC
• Lubricating Type: Press and Spray Lubrication
• Cooling Type: Water Cooling
• Start Type: Motor Start
• Transport Package: Wooden Box
• Trademark: CUSUNMACH
• Origin: China
• HS Code: 85022000
• Production Capacity: 3000 Sets Per Year

Product Description

Main structure of the generator set
Natural gas generator sets include natural gas-fueled reciprocating internal combustion engines, alternators, electrical parts, control devices, cooling systems, lubrication systems, exhaust systems, fuel systems, and auxiliary equipment. Except for the exhaust pipe and silencer of the exhaust system, they are mounted on a steel chassis. The generator set is a fixed permanent installed generator set. The steel underframe is mounted to the concrete foundation.

The basic structure of the gas engine
Cummin is the leading brand of engine over the world. We use an original engine manufactured by an authorized Cummin China factory in the USA as a power source for a generator set. The Cummin engine has the characteristics of low gas consumption, low exhaust temperature, great reliability and low maintaining price. The main structure of Cummin engine is high-strength double-walled, improved wide body, significantly increasing the reliability and durability of the engine. The four-valve design effectively increases charging efficiency.



2.4 Alternator

The brushless constant-voltage synchronous alternators are of the self-excited type with an electronic voltage regulator integrated in the excitation system. They are used as main or standby units in land based power installations and for ships' electrical systems and can be driven by internal combustion engines or gas, steam and water turbines and electric motors.

Structure:
The alternator comprises the main machine exciter and excitation system. The main machine is of revolving magnetic field with cylindrical rotor and damper winding. The exciter is revolving armature machine. The exciter power is supplied to the rotor of the main machine via rotating rectifiers.



2.5 Genset controller

The control panel can detect the current, voltage, speed, frequency, power, engine cooling water temperature, engine oil pressure, exhaust temperature, number of starts, running time, etc. of the unit. The screen also designed a variety of necessary protections for the generator set to ensure safe and stable operation of the unit. The main protections include high water temperature, low oil pressure, overspeed, high temperature, over voltage, under voltage and low frequency. The control panel provides DC power switch, emergency stop button, and unit fault alarm indication.

The controller is an easy-to-use control unit containing all necessary functions for protection and control of a genset. It can be used as a single unit for one genset, or it can be connected in a complete power management system with up to 32 controllers for synchronising projects, island or parallel to the mains. The power management system handles the load sharing between gensets and the load-dependent start and stop. The controller contains all necessary 3-phase measuring circuits, and all values and alarms are presented on the sun proof LCD display.




Parameter table
 

CM400C19N natural gas generator set
Genset model	CM400C19N
Engine model	Cummin K19N-G4
Alternator model	Kwise
Controller	DEIF
Continuous output	400kw
Rated voltage	400V
Power factor	0.8 (lagging)
Rated frequency	50Hz
Rated speed	1500rpm
Steady state voltage regulation rate	≤±2.5%
Stabilization time	≤1.5s
Transient state voltage regulation rate	≤ ±20%
Fluctuation rate	≤±0.5%
Steady state frequency regulation rate	≤0-5% (adjustable)
Stabilization time	≤5s
Transient state frequency regulation rate	≤±10%
Fluctuation rate	≤±0.5%
Starting method	24V DC start
Voltage regulating method	AVR (Automatic voltage regulation)
Speed governing method	Electronic governor
Ignition system	Digital ignition system
Cooling mehtod	Forced water cooling with multi-fans radiator
Coupling method	Flexible coupling
Reference dimension	3800x1500x1850mm (the drawing will be presented after signing of contract)
Reference weight	4000kg
Natural gas engine data
Model	Cummin K19N-G4
Engine type	Four strokes, spark plug ignited, water cooled, turbocharged and inter-cooled
Cylinder arrangement	6 in line
Bore	159mm
Stroke	159mm
Displacement	19L
Rated speed	1500rpm
Idle speed	850-1000rpm
Compression ratio	11:1
Exhaust gas temperature (after turbo)	≤600ºC
Exhaust gas back pressure	10kpa
Oil capacity	84.4L
Oil consumption	≤0.2g/kwh
Steady speed regulation	0-5% adjustable
Cooling method	Forced water cooling, multi-fans radiator
Lubricating method	Pressure and splashing lubricating
Ignition method	Spark plug ignition
Starting method	24V DC start
Rotating direction	Counterclockwise (flywheel view)
Output method	Flywheel output
Alternator data
Model	Kwise
Rated capacity	500kva
Rated voltage	400V
Rated frequency	50Hz
Power factor	0.8 (lagging)
Rated speed	1500rpm
Protection class	IP23
Insulation class	H
Phases and connection	3 phases and 4 wires
Exciting method	Brushless
Voltage regulating method	AVR automation