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Planta Electrica Diesel Generator Set Model Dnaf 25 Vka
Motor Onan, Generador Cummnig.
PLANTA ELECTRICA DIESEL GENERATOR SET MODEL DNAF 25 VKA VOLTAGE VALIDO DE SALIDA DESDE 120 HASTA 480 MOTOR ONAN, GENERADOR CUMMNIG.
ES THREE PHASE RECONNECTABLE, ES EL MODELO DNAF 5754886 CUMMINS POWER GENERATION
ESTA TOTALMENTE NUEVA TIENE CERO (0), HORA DDE USO.
DETALLES TECNICOS ......................................................................................................................................................................................
Diesel Generator Set
Model DNAF 60 Hz
20 kW, 25 kVA Standby
18 kW, 22.5 kVA Prime
The Cummins Power Generation DN-series commercial generator set is a fully integrated power generation system, providing optimum performance, reliability, and versatility for stationary standby or prime power applications.
A primary feature of the DN GenSet is strong motor-starting capability and fast recovery from transient load changes. The DN torque-matched system includes a heavy-duty Onan 4- cycle liquid-cooled diesel engine, an AC alternator with high motor-starting capacity, and an electronic voltage regulator for precise regulation under steady-state or transient loads. The DN GenSet accepts 100% of the nameplate standby rating in one step, in compliance with NFPA110 requirements.
The DN GenSet offers both user- and environment-friendly operation. The standard generator set control provides for
local or automatic operation, remote starting and stopping, and automatic shutdown at fault detection. Optional AC meters are available. The control may be upgraded to automatic remote
operation or to the DetectorTM Control for NFPA110 compliance. Optional sound attenuating housings, exhaust
silencers, and dual-wall fuel tanks address environmental
A wide range of options, accessories, and services are available, allowing configuration to your specific power generation needs.
Every production unit is factory tested at rated load and power factor. This testing includes demonstrated capacity at rated power, single-step rated load pickup, and reactive current capability to inductive loads. Cummins Power Generation manufacturing facilities are committed to the highest possible quality in the design, manufacture, and support of our products. The GenSet is CSA certified.
All Cummins Power Generation systems are backed by a comprehensive warranty program and supported by a worldwide network of 170 distributors and service branches to assist you with warranty, service, parts, and planned maintenance support
Onan Heavy-Duty Engine - Rugged 4-cycle liquid cooled industrial diesel engine delivers reliable power and fast response to load changes.
Electronic Voltage Regulator - Torque-matched regulator provides fast recovery from transient load changes, underfrequency compensation, and precise regulation.
Alternator - Excellent motor starting capability with low reactance 2/3 pitch, low waveform distortion with non-linear loads and fault clearing short-circuit capability.
Control Systems - The base control provides manual starting, operation, and protection features. Upgrades to automatic remote operation or to the DetectorTM Control are
Cooling Systems - Standard cooling package provides reliable running at the standby rating at a minimum of 40oC ambient temperature.
Skid Base - Supports the engine, alternator, and radiator with integral vibration isolation.
Housings - Optional weather-protective housings are available.
Fuel Tanks - Dual wall sub-base fuel tanks and in-skid day tanks are also offered.
Certifications - Generator sets are designed, manufactured, tested, and certified to relevant UL, NFPA, ISO, IEC, and CSA standards.
The general specifications provide representative configuration details. Consult the outline drawing for installation design.
Specifications – General
See outline drawing 500-3272 for installation design specifications.
Unit Width, in (mm) 28.0 (711) Unit Height, in (mm) 38.8 (986) Unit Length, in (mm) 58.3 (1481) Unit Dry Weight, lb (kg) 922 (418) Unit Wet Weight, lb (kg) 951 (431) Rated Speed, rpm 1800
Voltage Regulation, No Load to Full Load ±2.0% Random Voltage Variation ±1.0% Frequency Regulation 5% Random Frequency Variation ±0.5%
Radio Frequency Interference Meets requirements of most industrial and commercial applications
Fan Load, HP (kW)
Coolant Capacity with radiator, US Gal (L)
Coolant Flow Rate, Gal/min (L/min)
Heat Rejection To Coolant, Btu/min (MJ/min)
Heat Radiated To Room, Btu/min (MJ/min)
Maximum Coolant Friction Head, psi (kPa)
Maximum Coolant Static Head, ft (m)
Combustion Air, scfm (m3/min)
Alternator Cooling Air, scfm (m3/min)
Radiator Cooling Air, scfm (m3/min)
Max. Static Restriction, in H2O (Pa)
Standby Rating based on: Applicable for supplying emergency power for the duration of normal power interruption. No
sustained overload capability is available for this rating. (Equivalent to Fuel Stop Power in accordance with ISO3046, AS2789, DIN6271 and BS5514). Nominally rated.
Prime (Unlimited Running Time) Rating based on: Applicable for supplying power in lieu of commercially purchased
power. Prime power is the maximum power available at a variable load for an unlimited number of hours. A 10% overload capability is available for limited time. (Equivalent to Prime Power in accordance with ISO8528 and Overload Power in accordance with ISO3046, AS2789, DIN6271, and BS5514). This rating is not applicable to all generator set models.
Base Load (Continuous) Rating based on: Applicable for supplying power continuously to a constant load up to the full output rating for unlimited hours. No sustained overload capability is available
for this rating. Consult authorized distributor for rating. (Equivalent to Continuous Power in accordance with ISO8528, ISO3046, AS2789, DIN6271, and BS5514). This rating
is not applicable to all generator set models.
Site Derating Factors
Temp: approx 3% for each 10°F (5.5°C) above 77°F (25°C). Altitude: Approx 2.5% for each 1000 ft (300 m) above 500 ft (150 m).
Onan heavy-duty diesel engines provide stable power, low fuel consumption, quiet operation, and fast response to sudden load changes.
Mechanical governing is standard. Electronic governing is available for applications requiring constant (isochronous) frequency regulation such as Uninterruptible Power Supply (UPS) systems, non-linear loads, or sensitive electronic loads. Optional coolant heaters are recommended for all emergency standby installations or for any application requiring fast load acceptance after start-up.
Specifications – Engine
Base Engine Onan LPWT4, Turbocharged, diesel-fueled
Displacement in3 (L) 113.5 (1.9)
Overspeed Limit, rpm 2100 ±50
Regenerative Power, kW 4.60
Cylinder Block Configuration Cast iron, In-line 4 cylinder
Battery Capacity 160 amps minimum at ambient temperature of 32°F(0°C)
Battery Charging Alternator 45-amp belt driven engine mounted.
Starting Voltage 12-volt, negative ground
Lube Oil Filter Types Single spin-on, full flow oil filter. 250hr oil change internal. System includes oil cooler.
Standard Cooling System 104oF (40oC) ambient radiator cooling system
Gross Engine Power Output, bhp (kWm)
BMEP at Rated Load, psi (kPa)
Bore, in. (mm)
Stroke, in. (mm)
Piston Speed, ft/min (m/s)
Lube Oil Capacity, qt. (L)
Fuel Flow at Rated Load, US Gal/hr (L/hr)
Maximum Inlet Restriction, in. Hg (mm Hg)
Maximum Return Restriction, in. Hg (mm Hg)
Maximum Air Cleaner Restriction, in. H2O (kPa)
Exhaust Flow at Rated Load, cfm (m3/min)
Exhaust Temperature,oF (oC)
Max Back Pressure, in. H2O (kPa)
Direct injection, number 2 diesel fuel, single spin-on fuel filter; self-venting fuel system; mechanical fuel transfer pump with hand primer; 10 feet fuel lift; individual fuel injection pumps.
60 Hz Ratings, kW (kVA)
Single-bearing alternators couple directly to the engine flywheel with flexible discs for drivetrain reliability and durability. No gear reducers or speed changers are used. Two-thirds pitch windings eliminate third-order harmonic content of the AC voltage waveform and provide the standardization desired for paralleling of generator sets. The standard excitation system is a self (shunt) excited system with the voltage regulator powered directly from the generator set output. The standard
alternator is a single-phase 4-lead 105oC rise. Optional alternators include 3-phase and 3-phase with full single-phase output capability.
Important: Backfeed to a utility system can cause electrocution and/or property damage. Do not connect generator sets to any building electrical system except through an approved device or after building main switch is open.
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