New 2000kW Natural Gas Generator

Price (USD): Call +27-72-955-2560 or Request Quote
Item#: USP009039
Wattage: 2,000 kW
Make/Model: CG170-20
Year of Mfr: 2018
Hours: New!
Fuel Type: Natural Gas
Frequency: 50 Hz
Additional Info:
Caterpillar TM2000G-HV Natural Gas Generator.  YOM: 2018; 2000kW Mechanical Power @ 50Hz; ZERO Hour Surplus Units
The generating set data are as follows:
Design conditions:
Suction temperature / air humidity	°C / %	35 / 70
Site altitude:	m	200
NOx emissions	mg/m³ NC
@ 5% O2	250
Fuel data:
Fuel gas	Natural gas
Methane number / lower heating value	MN / kWh/m³	80 / 10,17
Gas density	kg/m³ NC	0,794
Engine	               Caterpillar CG170-20
Alternator	Marelli MJH 630 LA4
Voltage / voltage range	V / %	10500 / ± 10
Frequency	Hz	50
Energy balance:
Electrical Output at cos	= 1	kW	2000
Cooling water (± 8%)	               kW	1087
LT mixture cooling heat (± 8%)	kW	200
Exhaust gas temperature after heat exchanger °C   120
Exhaust heat (± 8%)	              kW	1014
Fuel consumption (+ 5%)	kW	4716
Electrical efficiency	%	42,4
Thermal efficiency	%	44,5
Total efficiency	              %	86,9

Engine CG170-20	
Modern, highly efficient stationary Otto four-stroke engine with a lean-burning V engine: water-cooled with mixture exhaust turbo charging and mixture cooling; anti-clockwise rotation direction in accordance with DIN 6265 (seen from flywheel side).

Manufacturer:			CAT
Model:				CG 170-20
Mechanical Power:		2055 KW
Speed:				1500 RPM
Configuration:			V20
Bore/Stroke:			170/195 mm
Displacement:			89 L
Compression Ratio:		13.0:1
Mean Piston Speed:		9.8 m/s
Engine Management:		TEM EVO
Oil Consumption:		0.2 g/KWh
Air-Gas Mixer:			CAT
Inlet Gas Pressure:		2-20 Kpa
Gas LHV:			34.56 MJ/Nm3
Gas Consumption at 100 % Load:	478.4 m3/h
Exhaust Gas Flow:		10889 Kg/h
Exhaust Gas Temp:		414 oC

Engine components:	
•	One-piece, rigid, ventilated crankcase
•	Gear-driven propulsion unit with low level of wear and tear
•	Single cylinder heads with four valves and seat rings, optimized turbulence swirl, spark plugs positioned centrally in the combustion chamber, intensive cooling for the spark plug bases which enables optimum combustion characteristics
•	Gear-driven camshaft in the V-chamber for both rows of cylinders, controlling two inlet and outlet valves per cylinder, O-rings provide oil seals on the valve shanks
•	Wear-free, microprocessor-controlled high-voltage ignition system with low voltage distribution, one ignition coil per cylinder and battery-buffered voltage supply
•	Anti-knock system with knocking sensor to monitor every cylinder, enabling knock-free operation with the best possible output at the highest level of efficiency, all whilst keeping within emissions limits
•	The volume ratio of gas and air in the multi-gas mixer is measured by means of air extraction via a dry air filter (with optical maintenance indicator) and is supplied with gas from the DVGW proofed safety gas train
•	Exhaust turbocharger condenses the gas mixture, final return cooling takes place in a 2 stage mixture cooler (low-temperature level in the separate cooling circuit, made of stainless steel) Fast-reacting throttle to regulate the power
•	Electronic regulation and monitoring of the power/speed and of the air/gas mixture at the mixer/actuator via the combustion chamber temperature (1 temperature sensor per cylinder), by the TEM-system.
•	Mean combustion temperature of each individual cylinder is measured to regulate the exhaust emissions
•	Highly efficient electric starter; flange-mounted to the crankcase.
•	Forced lubrication by means of a gear pump, lubricant heat exchanger is integrated into the engine cooling circuit; oil filter present in the main stream;
•	Control of charge pressure and regulation to different ambient conditions by a bypass valve (exhaust waste gate) in the exhaust gas.
•	Connection to the cooling water pipes and vibration decoupling via rubber compensators with counter flanges
•	Exhaust outlet with stainless steel compensator and counter flange for connection to the exhaust pipe
•	Knock sensors, sensors to check the position of the gas mixers, sensors to check the following: cooling water temperature, suction air, oil temperature, combustion chamber temperature, exhaust gas temperature, oil level, oil pressure, crankcase pressure and speed. Actuator for the throttle, gas mixer, control for pre-heating the cooling water. Ignition coil is completely cabled onto two central connection members (1 connection member per row of cylinders), cables can be removed.

Unit test runs:	
The units are subjected to a test run in the manufacturer's facility. The test runs take place on calibrated test stands. The test records are supplied with the documentation.

Corrosion protection:	
Standard protection of the engine respectively the genset to guard against corrosion during transport and extended storage at the place of destination; maximum length of protection is 24 months after delivery, assuming the genset is stored in a closed dry environment

Canopy/Weatherproof Container:
40’ containerized solution for the genset

Three-phase internal pole synchronous alternator	

Manufacturer: Marelli
Type:	MJH 630 LA4,	10500 V,	50 Hz

Three phase synchronous alternator, brushless, self-inducing, self-regulating, with damper cage for 30% asymmetric load and parallel operation. Soluble neutral point, protection type IP23, with protection against tropical and humid conditions (max 70% humidity) “”N” radio interference suppression grade for a maximum 1000 m installation altitude and 40 oC ambient temperature.

General Assembly

The alternator is composed of the main alternator as an internal pole alternator, an exciter alternator as an outer pole alternator and a voltage regulator with a power output stage, and is supplied via auxiliary winding or via the alternator output terminal, the supply being regulated according to output.
The exciter stator is supplied according to output via the voltage regulator. The three phase alternating current is aligned over the rotating diode disc and is then directed to the cogwheel of the alternator. The voltage of the main alternator is held constant when the load changes by changing the exciting current using the thyristor actuator in the voltage regulator.

Construction Type
Construction B20 in accordance with DIN 42950, IM 1101 in accordance with IEC 60034-7.  According to this construction type, the generator feet are installed underneath the bearings.

Protection Type and Ventilation
The protection type IP23 in accordance with IEC 60034-5 is made possible due to the ventilation type IC 01 in accordance with IEC 60034-6 with internal cooling and self-ventilation.

The stator winding corresponds to insulation class F / Utilization according to data sheet in accordance with VDE 0530/IEC 60034.
The stator winding corresponds to insulation class F / Utilization according to data sheet in accordance with VDE 0530/IEC 60034. 
The rotor is balanced as standard using a half feather key of the precision class G 2.5 in accordance with VDE 0530/IEC 60034, part 14. The absolute maximum rotational speed is 2250 rpm for 4-pole alternators and 1.25 x nominal speed for 6- and 8-pole alternators.
The alternator is equipped with a 5/6-step winding in order to suppress the harmonic content in the neutral point in the case of non-linear loads.
The winding is insulated with high quality cast resin that is applied with latest procedure (VPI).
Shaft Bearing
The alternator is built as a 2 bearing machine.  Regreasable anti-friction bearings. The drive-end side is designed as fixed bearing and the non- drive-end-side as loose bearing
Regulation System
Digital Voltage Regulator MEC 100 D with integrated diode failure monitoring, mounted in auxiliary terminal box.
Nominal voltage setting ±10 % UN.
Standards and Regulations
IEC 60034-1, EN 60034-1, BS 4999-5000, VDE 0530, DIN 6280-3, VDE 0530, NF 51-100, OVEM-10, NEMA MG 1.22, ISO 8528-3
Standard Assembly
o	Central terminal box with main terminal and neutral startpoint, auxiliary terminal boxes for the voltage regulator and terminal strip for accessories 
o	Cos-phi and reactive power controller with voltage tracking
o	Static converter for alternators and parallel network operation 
o	Temperature monitors (6 pcs.) 
o	PT 100	sensor in the winding (3x active, 3x replacement) 
o	Temperature monitors (1 pc each.) PT 100	sensor per bearing
o	Heating when stationary: 230 V ±5%, 2 pieces 200 W 150/1/1/1 A
	Kern 1:	30 VA	1FS5   (measured, not calibrated) 
	Kern 2:	15 VA	10P10 (general protection)
	 Kern 3:	15 VA	10P10 (differential protection)
o	By standard with cable flange with integrated strain-relief, without glands.

Electrical data and characteristics	
o	Voltage precision, static	0.5 ... 1 %
o	Rotational speed changing + 3 / -5%, cold and warm engine
o	Voltage curve Ph tick-over, deviation < 5% (voltage harmonic content)
o	THD distortion factor ≤ 2%
o	Radio interference suppression grade THF (Telephonic Harmonic Factor) < 2%, in accordance with IEC 60034-1 / VDE 0530
o	Sustained short circuit current for a three pin terminal short circuit: > 3 × nominal current for 5s
o	Overload capacity 10% for 1 hour within 6 hours, in accordance with IEC 60034-1 / VDE 0530
o	In accordance with VDE 0530, the maximum rotational speed is determined by means of a centrifuge test with 1.2 times the nominal speed for 2 minutes.


The fuel system provides the engine(s) with fuel of the correct flow, pressure and degree of purity.
Gas system
The purpose of the fuel gas system is to supply the engine with a constant gas feed of suitable pressure, temperature, and cleanness. It should also shut off the gas supply if any problem arises, and provide ventilation of trapped gas.

The power plant is designed for continuous operation on gas, and the gas system is designed for the agreed project gas fuel quality specified in Section 0.4
The gas fuel system consists of the following equipment:

Plant isolation valve (manual)
Gas flow measuring unit
The gas flow measuring unit measures the flow of gas into the whole power plant. The flow meter is pressure- and temperature-compensated.

Accuracy:	0.5% (from 20 % of

Main safety shut off valve - engine specific

The main safety shut-off valve unit isolates the gas system in case of an emergency, and the unit is located on the gas inlet pipe outside the engine hall.

1	Pneumatically operated shut-off valve
1	Manually operated shut-off valve

Gas regulating unit

Each engine is equipped with a gas regulating unit which controls the gas feed pressure to the engine depending on the engine load. The gas regulating unit performs a leakage test of the main shut-off valves after every engine stop or shut-down.

The lubricating oil (LO) is stored in barrels and transferred to the engines sumps by portable pump.

After starting, the engine is lubricated by mean of an engine driven pump that feeds the system with oil at the required flow and pressure. The LO is cooled by a plate heat exchanger cooled by the LT cooling water system, filtered by a (15 microns) filter.

The LO should be always tested to check the integrity of its chemical composition. When the LO quality level is found to be unsuitable anymore, it will be transferred by a used LO evacuation pump having a capacity of 1 m3/Hr.

The main LO pump is engine driven and of gear type supplying the engine with the required flow and pressure. 
The LO cooler is of plate type heat exchanger. It is cooled by the LT cooling water system and it is mounted on the engine.

The thermostatic valve is mounted on the engine and is used to maintain a minimum oil temperature for proper engine operation.

The engine is equipped by Lube oil filter (15 microns).

The used LO transfer pump is used to transfer the used LO from the sump tanks to the used LO tank. 

It is composed of the following equipment:
•	1 No.	Pumps (1 m3/h)
•	1 No.	Overflow valve
•	2 No.	Suction strainer
•	1 No	Suction shut off valves
•	1 No.	Discharge shut off valves

The used lube oil storage tank has a capacity of 3 m3, it is equipped with a Level Indicator and isolating valves.

The engine has one cooling water circuit. IT cools the charge air cooler, lubricating oil cooler, and engine jackets. Hot water from engine is cooled by engine driven radiator rated at 55 oC.

The cooling system consists of the following main equipment: 
•	Engine driven pump
•	Charge air cooler
•	Jacket water preheating unit
•	Expansion tank
•	Engine driven radiators
•	Lube oil heat exchanger

Water pre-heater is used to keep the engine warm for immediate start-up.

Principal properties of fresh water to be supplied shall be assumed as follows:
•	PH				7 - 8 
•	Turbidity max			2 deg
•	Total hardness (as CaCO3) max	10 ppm 
•	Silica (as SiO2) max			10 ppm
•	M-Alkalinity (as CaCO3) 		max 20 ppm 
•	Cl ion max.				5 ppm 

Other properties are assumed not to be harmful to engine operation.

The engines are equipped with intake air filters designed for proper engine operation and low maintenance.
The gas engine is turbocharged and equipped with charge air cooler.
Engine mounted drum filter are heavy duty type equipped with a pressure differential indicator that indicates if the filter replacement is required.

Back pressure: 300 mm WG, maximum
•	1 No.	Exhaust Pipe
•	1 No.	Expansion joints
•	1 No.	Silencer designed for a noise attenuation of 35 dBA.
•	1 No.	Rain Cap.

The MCC panel is the generator auxiliary panel. It supplies power for the radiator, preheaters, ventilation and lighting. The MCC panel will supply power to the generator either from the auxiliary transformer or from an external supply.

Instrumentation is in accordance with IEC requirements. Engine is equipped with an Instrumentation Panel with LCD display.

The Engine Control Cabinet is delivered as loose item for installation in Engine Control Room. Serial line communication to Alarm Plant (Modbus RTU slave, RS485).

•	Electronic actuator.
•	Push buttons with light, for start Engine, stop Engine and reset Interlock
•	Push buttons, rpm up/down
•	Key switch, start blocked
•	Selector switch, local/remote
•	Indicating light, start interlock
•	Analog indicators

The operator’s main interface shall be through an operating station consisting of LCD’s mouse and keyboard with color monitor.

•	I/O system characteristics:
- Analogue signals: 4-20mA
- Digital inputs: 24 VDC
- Digital output: Relay dry contacts

•	Operation display:
- Electrical measurements.
- Status of pumps, on-off valves and packaged equipment
- Status of D/G set(s) (Red: run, green: stop, yellow: fault)
- Alarm status of electrical & mechanical items
- Status of tank levels (high, low)
- Trending (Real time and historical)
- Alarm

•	LCD/Keyboard unit:
- One (1) engineering/operator station with 24inch color monitors and keyboard

•	Printer device:
- One (1) laser printer for hard copy (A4)
•	Software:
- HMI: Citect SCADA or Siemens WinCC or equivalent
- PLC: Siemens Step 7 or equivalent

•	PLC System configuration
- CPU: Common CPU (Siemens, 300 series, Single) for plant auxiliary equipment control
- Communication: Single (Profibus DP and Ethernet)
- I/O module: Single
- Power supply: Single

110V, 24V DC station batteries shall be provided for switchgear and generating set control devices. The battery shall be sized for all worst case concurrent loads and to maintain battery/system voltages at acceptable levels without charging, following an auxiliary power loss incident for a period of 1 hour. Batteries are equipped with charger mounted in corresponding panels. Batteries shall be lead acid type.

The 11KV switchgear is of three-phase, metal enclosed, air insulated type with one main bus bar and provided with circuit breakers. The switchgear is designed, manufactured and tested according to IEC standard.

The switchgear is dimensioned with the following rating:
•	Rated voltage				20 KV
•	Service voltage				11 KV
•	Rated current				3280 A
•	Rated short circuit withstand current Ith/1 sec	20 KA
•	Power frequency with stand voltage for 1min	28 KV
•	Impulse with stand voltage		75 KV
•	Circuit breaker standards 				IEC 60056
•	Circuit breaker type				Vacuum, Fixed
•	Installation					Indoor

The switchgear consists of:
•	11 Generator’s incomings
•	2 Outgoing feeders
•	1 Auxiliary Transformers feeders
•	1 Metering cubicle
•	2 Spare breakers
•	Zigzag transformer

The plant auxiliaries are fed by an MV/LV step down transformers. The transformer is three-phase, two-winding; naturally cooled oil immersed distribution transformer.

The transformers are dimensioned with the following ratings:
•	Rated power                                            	300 KVA
•	Rated incoming voltage ± 2x2.5% 	11,000 V
•	Rated outgoing voltage			400 V
•	Standard	  			IEC 60076
•	Cooling					ONAN

The transformer has the following accessories:
•	Voltage bushings
•	Thermometer with two signal contacts
•	Earthing terminal

The LV main distribution board feeds the MCC’s installed in the electrical room

(5) Five units available

Warranty: 18 months after picking up engine from Germany


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Equipment is sold as is. EXW warehouse. Subject to prior sale. Shipping quotes available upon request.