Mechanical Technology June 2015

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⎪ Sustainable energy and energy management ⎪
Mechanical Technology — June 2015 27
Large, modern gensets now available in Africa
Industrial operations across Africa can
lower their fuel costs and minimise
their impact on the environment with
the new range of high-horsepower QSK95
Series generator sets launched locally by
the African division of Cummins – a global
leader in the manufacture, sales and servic-
ing of diesel engines and related technology.
The QSK95 generator sets are Cummins
Power Generation’s most powerful diesel
generator sets to date, offering up to
3.5 MW at 60 Hz and 3.75 MVA at 50 Hz.
They are engineered with the highest
kW/m2 power to footprint ratio in their
class, resulting in a 20% improvement in
power density.
The durable and robust QSK95 Series
generator sets are ideally suited for mining,
oil and gas, or any project where harsh
conditions, challenging environments and
the demand for reliable, continuous remote
power exist. These generator sets are also
engineered to deliver reliable, mission criti-
cal power protection without interruption
– an uptime requirement shared by data
centres, hospitals, water and wastewater
treatment plants, and utilities.
“Over 8 000 hours of operation, the
QSK95 can achieve fuel savings of more
than US$400 000 (R4-million+). The
series is designed to lower the total cost of
ownership by reducing installation expens-
es, fuel costs and maintenance require-
ments –all while maintaining Cummins’
high standards of reliability,” says Cummins
Southern Africa Power Generation director
Kobus Coetzer.
Fewer maintenance requirements, lon-
ger service intervals and 25 000 hours to
major overhaul make these generator sets
ideal for prime power applications. They
ramp up to 100% of rated load in a single
step, and are ready to accept facility load
in less than 10 s.
Other features include:
• Reduced costs, thanks to three-
year/1 000 hour oil and filter change
intervals.
• Low temperature after-cooling, which
optimises radiator pack-
age sizing and contributes
to the generator’s smaller
footprint.
• Condition-based mainte-
nance sensors that monitor
air and fuel filter restrictions
and prompt filter changes
only when required.
• A single shaft, dual element
cooling pump that minimises
potential leaks and failures.
• A positive flow circulating pump in the
coolant heater that enables even heating
throughout the engine block for faster
and more reliable starts.
• An oil cooler that provides access to the
thermostat without lifting the engine.
• A mounting rail design allows the al-
ternator to slide back on the chassis
without being lifted.
• Larger engine hand holes facilitate
cylinder block access without dropping
the oil pan.
• Global availability of technicians, parts
and engineering support.
The QSK95 Series generator sets are avail-
able in multiple rating options for specific
power generation applications, including:
continuous, prime power, mission critical
and standby. Cummins also offers a data
centre continuous (DCC) rating specifically
tailored to meet data centre power
requirements. q