66KVA 3-Phase Diesel Generator

General Features:

Cummins engine 4BTA3.9-G2
Close-coupled to LSA alternator LSA42.3L9
DSE 7420 MKII controller
ABB main circuit breaker: 125 A, 4P
Electronic speed governor (EFC)
Self-excited excitation system (SHUNT)
AVR model: R220
Key switch
Emergency stop switch
ATS (automatic transfer switch) receptacle
Remote run connector
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
Non-returning valve for fuel inlet hose of 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
Breather valve for fuel tank
Operation Manual / Specifications

Equipment Specification:

Model: PR66C-SAE
Structure type: R (sound-proof)
Fuel tank capacity: 360 L
Dry weight: 1 492 kg
Noise level 7 m: 68.2 dBA
Dimensions (L × W × H): 2 688 × 1 050 × 1 752 mm
Standby power: 66 kVA / 53 kW
Prime power: 60 kVA / 48 kW
Voltage / Amperage: 415 V / 83 A

Diesel Engine:

Manufacturer/Brand: Cummins
Model: 4BTA3.9-G2
Dimensions (L × W × H): 884.9 × 748.4 × 985.6 mm
Dry weight (approx.): 355 kg
Number of cylinders: 4
Bore × Stroke: 102 mm × 120 mm
Displacement: 3.9 L
Compression ratio: 17.3
Type of injection: Direct injection
Intake system: Jacket water aftercooled
Intake resistance: ? 3.7 kPa
Cooling system: Water-cooled
Fan: Pusher
Battery voltage: 12/24 V
Type of fuel: Diesel
Type of oil: 15W40-CF4
Oil capacity: 10.9 L
Type of coolant: Glycol mixture
Coolant capacity (engine only): 8.3 L
Back pressure: ? 10.2 kPa
Standby power: 64 kW
Prime power: 58 kW
Fuel consumption (100 % load): 212 g/kW·h

Alternator:

Manufacturer/Brand: LSA (Leroy-Somer)
Model: LSA42.3L9
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: 0.216 m³/s (50 Hz) / 0.281 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 7420 MKII:
The DSE 7420 MKII is an advanced Auto Mains Failure (AMF) control module based on microprocessor technology. It provides comprehensive monitoring and control of both the generator set and the mains supply, with automatic start/stop, load transfer, and extensive protection functions. All operational parameters, status information and alarms are clearly displayed on the LCD.
Key Features

Microprocessor control with high stability and reliability
Monitoring and measuring of mains supply and genset operational parameters
Manual, Automatic and Remote operating modes
Real-time clock with date/time display and overall runtime
Event logging (up to 250 log entries)
Overall power output display
Integral speed/frequency detection
Communication with PC via RS485 or RS232 using MODBUS protocol
Multiple configurable inputs and outputs

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 and automatic transfer control
Multiple additional engine and electrical protections

Overall Dimensions & Access Points:

Overall size: 2 688 mm (L) × 1 050 mm (W) × 1 752 mm (H)
Key external features include:
Control cabinet
Emergency stop button
Cable trench
Ground bolting
Tie-down points
Fuel drain
Fork-lift channels
Waste drain
Lifting lug
Coolant inlet
Exhaust gas outlet
Air outlet
Air inlet
External fuel inlet/return hose fittings
Coolant/oil drain hose fittings
Mounting holes


Control & Field Wiring Cabinet Layout:

Charge indicator
Control cabinet lamp
DSE 7420 MKII control module
Main circuit breaker
Live wire terminals
Neutral wire terminal
Ground wire terminal
Emergency stop button
Key switch
Time counter / hour meter