Planta Electrica Diesel Generator Set Model Dnaf 25 Vka

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Motor Onan, Generador Cummnig

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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


 

 

Description                                                Features

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

concerns.

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

available.

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.    

 

Generator Set

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

 

Cooling

Standby

Prime

Fan Load, HP (kW)

0.3 (0.2)

0.3 (0.2)

Coolant Capacity with   radiator, US Gal (L)

2.2 (8.3)

2.2 (8.3)

Coolant Flow Rate, Gal/min (L/min)

12.2 (46.2)

12.2 (46.2)

Heat Rejection To Coolant, Btu/min   (MJ/min)

1220.0 (1.3)

1110.0 (1.2)

Heat Radiated To   Room, Btu/min (MJ/min)

320.0 (0.3)

290.0 (0.3)

Maximum Coolant   Friction Head, psi (kPa)

1.4 (9.7)

1.4 (9.7)

Maximum Coolant Static Head, ft (m)

12.0 (3.7)

12.0 (3.7)

 

Air

 

 

Combustion Air, scfm (m3/min)

64.0 (1.8)

64.0 (1.8)

Alternator Cooling Air, scfm (m3/min)

175.0 (5.0)

175.0 (5.0)

Radiator Cooling Air, scfm (m3/min)

2200.0 (62.3)

2200.0 (62.3)

Max. Static   Restriction, in H2O (Pa)

0.2 (62.2)

0.2 (62.2)

 

Rating Definitions

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).

 

 

Engine

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

 

Power Output

Standby

Prime

Gross Engine Power   Output, bhp (kWm)

35.1 (26.2)

31.9 (23.8)

BMEP at Rated Load, psi (kPa)

119.0 (820.5)

108.0 (744.6)

Bore, in. (mm)

3.38 (85.9)

3.38 (85.9)

Stroke, in. (mm)

3.15 (80.0)

3.15 (80.0)

Piston Speed, ft/min (m/s)

945.0 (4.8)

945.0 (4.8)

Compression   Ratio

16.2:1

16.2:1

Lube Oil Capacity, qt. (L)

6.9 (6.5)

6.9 (6.5)

 

 

 

Fuel Flow

 

 

Fuel Flow at Rated Load,   US Gal/hr (L/hr)

2.1 (7.8)

1.9 (7.1)

Maximum Inlet Restriction,   in. Hg (mm Hg)

5.0 (127.0)

5.0 (127.0)

Maximum Return Restriction, in. Hg (mm   Hg)

6.0 (152.4)

6.0 (152.4)

 

 

 

Air Cleaner

 

 

Maximum Air Cleaner   Restriction, in. H2O (kPa)

10.0 (2.5)

10.0 (2.5)

 

 

 

Exhaust

 

 

Exhaust Flow at Rated   Load, cfm (m3/min)

150.0 (4.2)

150.0 (4.2)

Exhaust Temperature,oF (oC)

750.0 (398.9)

715.0 (379.4)

Max Back Pressure,   in. H2O (kPa)

20.0 (5.0)

20.0 (5.0)

Fuel System

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.

Fuel Consumption

Standby

Prime

60 Hz Ratings, kW (kVA)

20 (25)

18 (22.5)

 

Load

1/4

1/2

3/4

Full

1/4

1/2

3/4

Full

 

US

Gal/hr

0.63

0.96

1.32

1.65

0.57

0.87

1.20

1.50

 

L/hr

2.4

3.6

5.0

6.2

2.2

3.3

4.5

5.7

 

 

 

 

 

 

 

 

 

 

Alternator

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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