JCB G140QS Diesel Generator

The JCB G140QS is a heavy-duty, enclosed diesel generator designed to provide reliable electrical power for prime and standby applications. Housed within a weatherproof, sound-attenuated canopy, it is suitable for construction sites, industrial facilities, commercial buildings, utilities, mining operations, and temporary power installations where dependable power and low operating noise are required.

Power Output

The generator is rated to deliver:

Rating Output
Prime Power 125 kVA / 100 kW
Standby Power 137.5 kVA / 110 kW
Frequency 50 Hz
Voltage 400/230 V
Phases Three Phase
Power Factor 0.8
Rated Speed 1500 RPM

Engine

Power is supplied by a JCB TCAG S2 four-cylinder, turbocharged diesel engine with direct fuel injection.

Key engine characteristics include:

- 4.765 litre displacement
- Four-cylinder configuration
- Water-cooled cooling system
- Mechanical governor
- Compression ratio of 18:1
- Two-stage air cleaner with restriction indicator
- Engine oil capacity of 14 litres
- Coolant capacity of 18 litres
- Prime engine output of 127 kW
- Standby engine output of 140 kW

The engine is designed to deliver excellent reliability, fuel efficiency and long service intervals under demanding operating conditions.

Alternator

The generator incorporates an ECP34-1L/4 brushless alternator featuring:

- Four-pole construction
- Star-connected windings
- Class H insulation
- IP23 enclosure protection
- Automatic Voltage Regulator (AVR)
- Self-regulating brushless excitation system
- ±1.5% steady-state voltage regulation
- Flexible disc coupling
- Single sealed bearing
- Direct-drive centrifugal cooling fan

These features provide stable voltage output suitable for powering sensitive electrical equipment.

Fuel System:

The G140QS includes an integrated fuel system comprising:

- 285 litre steel fuel tank
- EN590 diesel fuel compatibility
- Internal belly tank fuel filling
- Fuel level sender
- Three-way fuel valve

Canopy and Construction:

- Lockable maintenance doors
- Control panel viewing window
- High-density fire-retardant acoustic insulation
- Heavy-duty skid base
- Internal bunding
- Forklift pockets
- Single lifting point
- Standard yellow industrial finish (White optional)

Overall dimensions:

- Length: 2,850 mm
- Width: 1,140 mm
- Height: 1,830 mm

Dry operating weight (excluding fuel): 1,880 kg

Mechanical Features:

- Heavy-duty cooling package
- Mechanical governor
- Low oil pressure protection
- Coolant temperature monitoring
- Oil temperature sender
- Radiator guards
- Fuel pre-filter with water separator
- Fuel level sender
- Residential-grade exhaust silencer
- Jacket water heater
- Manual oil draim pump
- Hot & moving components guard
- Three-way fuel valve

These features assist with reliable operation, preventative maintenance and operator safety.

Electrical Features:

- AVR DSR voltage regulation
- 4-pole moulded case circuit breaker
- Emergency stop button
- External emergency stop provision
- Preparation for earth spike connection
- MAUX auxiliary excitation

Optional electrical upgrades include:

- PMG excitation
- Earth leakage protection
- Remote display
- Alternative output voltages
- Anti-condensation heater
- Enhanced winding protection

Noise Performance:

The acoustic enclosure achieves a sound pressure level of:

66 dB(A) at 7 metres

This makes the G140QS suitable for use in commercial and urban environments where reduced noise emissions are important.

Standards and Compliance:

- ISO 8528 power performance
- ISO 3046 engine performance
- CE certification
- Machinery Safety Directive
- Low Voltage Directive
- Electromagnetic Compatibility Directive
- Noise Emissions Directive
- Stage IIIA emissions compliance (at 50 Hz prime power)