20kVA 3-Phase Enclosed Diesel Generator

Standard Equipment:

1 × 12 V / 72 Ah sealed-for-life maintenance-free battery
Lockable battery isolator switch
Powder-coated canopy
50 °C radiator
Steel base frame with fork slots
Vibration isolators between engine/alternator and base frame
Dry-type air filter
Base fuel tank for approximately 30 hours running
Drain points for fuel tank
Operation Manual / Specifications

Environmental Operating Conditions:

Installation: Outdoors or indoors (well ventilated)
Ambient temperature: –25 °C to 50 °C (coolant heater required below 5 °C)
Humidity: Less than 90 %
Altitude: Below 1 000 m above sea level

General Features:

Kubota engine D1803-M-DI-BG
Close-coupled to Leroy Somer LSA alternator LA40M5
DSE 4520 MKII controller
Main circuit breaker: 32 A
Electronic speed governor
Self-excited excitation system
AVR model: R220
Key switch
Emergency stop switch
ATS (automatic transfer switch) receptacle
Convenience receptacles: 3-phase and 1-phase

Equipment Specification:

Model: PR20K-SAE
Structure type: RS (sound-proof)
Fuel tank capacity: 120 L
Dry weight: 728 kg
Noise level 7 m: 64.8 dBA
Dimensions (L × W × H): 1 932 × 750 × 1 209 mm
Standby power: 19.8 kVA / 15.84 kW
Prime power: 18 kVA / 14.4 kW

Engine:

Manufacturer/Brand: Kubota
Model: D1803-M-DI-BG
Dimensions (L × W × H): 575.9 × 499 × 685 mm
Dry weight (approx.): 151 kg
Number of cylinders: 3
Bore × Stroke: 87 mm × 102.4 mm
Displacement: 1.826 L
Compression ratio: 23.8
Type of injection: Direct injection
Intake system: Natural aspirated
Intake resistance: 1.96 kPa
Cooling system: Water-cooled
Fan: Pusher
Battery voltage: 12 V
Type of fuel: No. 2-D (ASTM D975)
Type of oil: Class CF lubricating oil
Oil capacity: 7.5 L
Type of coolant: Glycol mixture
Coolant capacity: 7.1 L
Back pressure: 7.1 kPa
Standby power: 15.87 kW
Prime power: 14.4 kW
Fuel consumption (100 % load): N/A

Alternator:

Manufacturer/Brand: Leroy Somer
Model: LA40M5
Exciter: Brushless
Cooling fan: Synthetic plastic
Windings: 100 % copper
Insulation class: H
Winding pitch: 2/3
Terminals: 12
Protection: IP23
Altitude: ? 1 000 m
Overspeed: 2 250 rpm
Air flow: 0.06 m³/s (50 Hz) / 0.072 m³/s (60 Hz)
Voltage regulation: ±0.5 %
Total harmonic distortion (TGH/THC): < 3.0 % (no load) / < 5 % (on load)
Telephone interference: THF < 2 %; TIF < 50

Control System – DSE 4520 MKII:
The DSE 4520 MKII is a microprocessor-based Auto Start control module that provides full engine and generator monitoring, automatic start/stop control, and comprehensive protection functions via the front-panel push-buttons and LCD display.
Key Features

Manual / Auto / Stop modes
Automatic engine start and stop
Full engine and generator instrumentation
Multiple protection and shutdown functions
Configurable inputs and outputs
Event and alarm logging
Compatible with electronic and mechanical engines

Standard Protection / Monitoring Functions:

Low oil pressure
High engine temperature
Overspeed / Underspeed
Charge failure
Auxiliary shutdown
Emergency stop
Battery voltage monitoring
Generator voltage and frequency monitoring

Overall Dimensions & Access Points:

Overall size: 1 932 mm (L) × 750 mm (W) × 1 209 mm (H)
Key external features include:
Exhaust gas outlet
Coolant inlet
Roping / lifting lugs
Control cabinet
Field wiring cabinet
Base frame with fork-lift channels
Fuel drain
Coolant / oil hose fittings
External fuel inlet / return fittings
Air inlet
Access doors
Tie-down points


Control & Field Wiring Cabinet Layout:

Charge indicator
Control cabinet lamp switch & lamp
DSE 4520 MKII control module
Key switch
Hour meter / time counter
Main circuit breaker (32 A)
Circuit breakers for convenience receptacles
1 × 3-phase convenience receptacle
2 × 1-phase convenience receptacles
Emergency stop button
Live, Neutral and Ground terminals