88KVA 3-Phase Diesel Generator

General Features:

Cummins engine 4BTA3.9-G11
Close-coupled to Leroy-Somer alternator LSA44.3S3
DSE 7420 MKII controller
ABB main circuit breaker: 125 A, 4P
Electrical speed governor
Self-excited excitation system (SHUNT)
AVR model: AS440
Key switch
Emergency stop switch
ATS (automatic transfer switch) receptacle
2 × 12 V / 120 Ah sealed-for-life maintenance-free batteries
Lockable battery isolator switch
50 °C radiator
Oil pump on the engine
Steel base frame with lifting lugs
Vibration isolators between engine/alternator and base frame
Dry-type air filter
Base fuel tank for approximately 25 hours running
Drain points for fuel tank
Operation Manual / Specifications

Equipment Specification:

Model: PR88C-SAE
Structure type: R (sound-proof)
Fuel tank capacity: 450 L
Dry weight: 1 650 kg
Sound pressure level 7 m: 68.2 dB(A)
Dimensions (L × W × H): 2 688 × 1 050 × 1 789 mm
Standby power: 88 kVA / 70 kW
Prime power: 80 kVA / 64 kW

Diesel Engine:

Manufacturer/Brand: Cummins
Model: 4BTA3.9-G11
Dimensions (L × W × H): 904.3 × 672.3 × 1 092.5 mm
Dry weight (approx.): 350 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: Turbocharger & Aftercooler
Intake resistance: ? 3.7 kPa
Cooling system: Water-cooled
Fan: Pusher
Battery voltage: 12/24 V
Type of fuel: Diesel
Type of oil: ACEA E2, API CF, CF-4, CG-4
Oil capacity: 10.9 L
Type of coolant: Glycol mixture
Coolant capacity (engine only): 8.3 L
Back pressure: ? 10.0 kPa
Standby power: 80 kW
Prime power: 70 kW

Alternator:

Manufacturer/Brand: Leroy-Somer
Model: LSA44.3S3
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) × 1 789 mm (H)
Key external features include:
Cable trench
Emergency stop switch
Control cabinet
Air inlet
Lifting lug
Roping lug
Coolant inlet
Exhaust gas outlet
Fuel drain
Fork-lift channel
Access door
Tie-down points
External fuel inlet/return hose fittings
Base frame
Coolant/oil drain hose fittings


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