QSK50 Cummins Diesel Generator

In short, the Cummins QSK50 diesel generator is a unique generator with high power and efficiency, smart systems and advanced safety. It has suitable design for industrial and commercial environments.

PowerCommand control 

is an integrated generator set control system providing governing, voltage regulation, engine protection and operator interface functions. Major features include: 

• Integral AmpSentry™ Protective Relay providing a full range of alternator protection functions that are matched to the alternator provided. 
• Battery monitoring and testing features and smart starting control system.
• Three phase sensing, full wave rectified voltage regulation system, with a PWM output for stable operation with all load types. 
• Control suitable for operation in ambient temperatures from -40 °C to +70 °C (-40 °F to +158 °F) and altitudes to 5000 meters (13,000 feet). 
• Prototype tested; UL, CSA, and CE compliant. 
• InPower™ PC-based service tool available for detailed diagnostics. 
• Optional Echelon® LONWORKS® network interface.

Cummins® commercial generator sets are fully integrated power generation systems providing optimum performance, reliability and versatility for stationary Standby and Prime Power applications.

Cummins heavy-duty engine - Rugged 4-cycle industrial diesel delivers reliable power, low emissions and fast response to load changes. 

Alternator - Several alternator sizes offer selectable motor starting capability with low reactance 2/3 pitch windings, low waveform distortion with non-linear loads and fault clearing short-circuit capability.

Permanent Magnet Generator (PMG) - Offers enhanced motor starting and fault clearing short circuit capability. 

Control system - The PowerCommand® digital control is standard equipment and provides total genset system integration including automatic remote starting/stopping, precise frequency and voltage regulation, alarm and status message display, AmpSentryTM protective relay, output metering and auto-shutdown at fault detection and NFPA 110 Level 1 compliance. 

Cooling system - Standard and enhanced integral set-mounted radiator systems, designed and tested for rated ambient temperatures, simplifies facility design requirements for rejected heat. 

NFPA - The genset accepts full rated load in a single step in accordance with NFPA 110 for Level 1 systems. 

Warranty and service - Backed by a comprehensive warranty and worldwide distributor network.

Engine specifications

Bore: 159 mm (6.25 in.) 

Stroke: 159 mm (6.25 in.) 

Displacement: 50.3 litres (3067 in3 ) 

Configuration: Cast iron, V 16 cylinder

Battery capacity: 1800 amps minimum at ambient temperature of 0 °C (32 °F) Battery charging alternator: 55 amps Starting voltage 24 volts, negative ground Fuel system: Cummins’ modular common rail system

Fuel filter: Two stage spin-on fuel filter and water separator system. Stage 1 has a three element 7 micron filter and stage 2 has a three element 3 micron filter. 

Air cleaner type: Dry replaceable element

Lube oil filter type(s): Four spin-on, combination full flow filter and bypass filters Standard cooling system: High ambient cooling system

Generator set options and accessories

Engine

• 208/240/480 V thermo-statically controlled

coolant heater for ambient above and below 4.5 °C (40 °F) 

• Dual 120/208/240/480 V 300 W lube oil heaters 
• Heavy duty air cleaner 
• Triplex fuel filter

Alternator 

• 80 °C rise 
• 105 °C rise 
• 125 °C rise 
• 150 °C rise 
• 120/240 V 300 W anti-condensation heater 
• Increased motor starting capabilities

Control panel 

• PowerCommand 3.3 
• Multiple language support 
• 120/240 V 100 W control anticondensation heater 
• Exhaust pyrometer 
• Ground fault indication 
• Remote annunciator panel