Jinan 500kw Natural Gas Power Generator

Product Description

1. 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.
2. Main structure of the gas engine
Series 190 closed-loop electronic control gas engine is developed by JDEC with the cooperation of American WOODWARD. It is the engine that mixes air and fuel before turbocharger. The power performance, fuel economy and reliability of this gas engine reach world advanced level by adopting world advanced outer mixing mode, electronic control technology and lean-burnt strategy.
The gas fuel of this engine series can be natural gas, biogas, natural gas, coal mine gas, and etc. In order to meet the requirements of different customers, this gas engine can be packaged into generating set or other power take-off.
3. 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.
4. Genset control panel
Dedicated gas genset control panel is in the shape of cabinet. With controller, various indicating instruments, regulating buttons, protection indicators, emergency shut-down button installing inside to monitor the working status of the genset. Speed regulation is executed by the electronic governor and the fine regulation can also can be done by the buttons on the control panel. The voltage of the genset is automatic through the buttons on the control panel.
Working power resource of the cabinet is DC24V (2 batteries). There is charger inside the cabinet.
5. Parameter table

JICHAI 500kw natural gas generator set data
Genset model	500GF-T
Engine model	12V190ZLDT
Alternator model	1FC Series or equivalent
Control panel	GPL 500
Rated voltage	400V
Power factor	0.8 (lagging)
Rated frequency	50Hz
Rated speed	1000rpm
Starting method	24V DC start
Voltage regulating method	AVR (Automatic voltage regulation)
Speed governing method	Electronic governor
Ignition system	Digital ignition system
Cooling method	Forced water cooling with multi-fans radiator
Coupling method	Flexible coupling
Reference dimension	6195x2200x2778mm (the drawing will be presented after signing of contract)
Reference weight	14700kg
Natural gas engine data
Model	12V190ZLDT
Engine type	Four strokes, spark plug ignited, water cooled and turbocharged
Cylinder arrangement	V type, 60°
Bore	190mm
Stroke	210mm
Displacement	71.45L
Rated speed	1000rpm
Idle speed	700rpm
Lube oil consumption	≤0.8g/kwh
Exhaust temperature (before turbo)	≤650ºC
Jacket water outlet temperature	≤85ºC
Lube oil temperature in oil pan	≤90ºC
Oil pressure in main oil passage	400-800kpa
Oil pressure in turbocharger	200-400kpa
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	1FC series or equivalent
Rated capacity	625kva
Rated voltage	400V
Rated frequency	50Hz
Power factor	0.8 (lagging)
Rated speed	1000rpm
Protection class	IP23
Insulation class	H
Phases and connection	3 phases and 4 wires
Exciting method	Brushless
Voltage regulating method	AVR automation
Steady state voltage regulation ratio	≤±2.5%
Transient voltage regulation ratio	≤+20% (-15%)
Voltage settling time	≤ 1.5s
Voltage fluctuation ratio	≤1%
Steady state frequency regulation ratio	0-5%
Transient frequency regulation ratio	≤±10%

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