33KVA 3-Phase Diesel Generator

General Features:

Cummins engine 4B3.9-G1
Close-coupled to Leroy-Somer alternator LSA42.3VS3
DSE 4520 MKII controller
Main circuit breaker: 63 A
Mechanical speed governor
Self-excited excitation system (SHUNT)
AVR model: R220
Key switch
Emergency stop switch
ATS (automatic transfer switch) receptacle
2 × 12 V / 72 Ah sealed-for-life maintenance-free batteries
Lockable battery isolator switch
Powder-coated canopy
50 °C radiator
Oil pump on the engine
Steel base frame with fork slots
Vibration isolators between engine/alternator and base frame
Dry-type air filter
Base fuel tank for approximately 24 hours running
Drain points for fuel tank
Operation Manual / Specifications

Equipment Specification:

Model: PR33C-SAE
Structure type: R (sound-proof)
Fuel tank capacity: 165 L
Dry weight: 1 236.27 kg
Noise level 7 m: 67.7 dBA
Dimensions (L × W × H): 2 298 × 1 050 × 1 553 mm
Standby power: 33 kVA / 26 kW
Prime power: 30 kVA / 24 kW

Diesel Engine:

Manufacturer/Brand: Cummins
Model: 4B3.9-G1
Dimensions (L × W × H): 765 × 582 × 908 mm
Dry weight (approx.): 308 kg
Number of cylinders: 4
Bore × Stroke: 102 mm × 120 mm
Displacement: 3.9 L
Compression ratio: 16.5
Type of injection: Direct injection
Intake system: Natural aspirated
Intake resistance: ? 4.98 kPa
Cooling system: Water-cooled
Fan: Pusher
Battery voltage: 12/24 V
Type of fuel: 0# or ASTM 2
Type of oil: API-CG4/CH4 or ACEA-E3/E5
Oil capacity: 9.5 L
Type of coolant: Glycol mixture
Coolant capacity: 19.6 L
Back pressure: ? 10.1 kPa
Standby power: 27 kW
Prime power: 24 kW
Fuel consumption (100 % load): 229 g/kW·h

Alternator:

Manufacturer/Brand: Leroy-Somer
Model: LSA42.3VS3
Exciter: Brushless
Cooling fan: Cast alloy aluminium
Windings: 100 % copper
Insulation class: H
Winding pitch: 2/3
Terminals: 12
Protection: IP23
Altitude: ? 1 000 m
Overspeed: 2 250 rpm
Air flow: 0.100 m³/s (50 Hz) / 0.122 m³/s (60 Hz)
Voltage regulation: ±1.0 %
Total harmonic distortion (TGH/THC): < 1.5 % (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
Mains supply monitoring (where applicable)

Overall Dimensions & Access Points:

Overall size: 2 298 mm (L) × 1 050 mm (W) × 1 553 mm (H)
Key external features include:
Control cabinet
Emergency stop button
Cable trench
Ground bolting
Tie-down points
Fuel drain
Coolant/oil drain hose fittings
Fork-lift channels
Waste drain
Air outlet
Exhaust gas outlet
Lifting lug
Coolant inlet
Air inlet
External fuel inlet/return hose fittings
Mounting holes


Control & Field Wiring Cabinet Layout:

Charge indicator
Control cabinet lamp
DSE 4520 MKII control module
Main circuit breaker
Live wire terminals
Neutral wire terminal
Ground wire terminal
Control cabinet lamp switch
Key switch
Time counter / hour meter