Introduced in 2014, Cummins’ QSK95 diesel generator has been installed in over 35 countries, making its mark on every continent except Antarctica. From data centers to hospitals; wastewater treatment facilities to mines; and many other industries, the series provides reliable power for a range of standby and prime applications.

“Reaching the production of the one-thousandth QSK95 Genset is a remarkable achievement for Cummins and a testament to the market’s acceptance of the product. Demand for the product continues to be strong,”

said Doug Sunkel, Cummins Fridley Plant Manager.

Although the QSK95 engine is produced in Seymour, Indiana, the generator set is assembled at the Cummins manufacturing plant in Fridley, Minnesota. This year a significant milestone was achieved when Cummins produced its one-thousandth QSK95 generator set, which will power a data center facility in North America.

The product offers exceptional durability and superior transient performance, demonstrated by its ability to achieve 100% single-step load acceptance. Capable of operating at low loads without the risk of wet stacking, the QSK95 is the ideal solution for phased buildouts. Furthermore, with market-leading low in-cylinder emissions, the product meets most local permitting requirements without the need for exhaust after-treatment. Finally, with extended maintenance intervals and easily accessible components for timely servicing, the QSK95 ensures five-nines reliability.

Learn how the QSK95 can support your power generation requirements by reaching out to any of our 8000 distributors/dealer locations globally. Find your local distributor/dealer at cummins.com/locations.

Source: Cummins

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This new series of enclosures are pre-designed with 85 dBA or 70 dBA sound attenuation options at 23 feet, offering a unique plug and play solution to fit a diverse range of gas power needs. Compatible with two Cummins generator models in 1100kW and 2000kW power nodes, the CHP enclosures can offer up to 83.4% and 88.6% of total system efficiency respectively.

All-new standard enclosures are built with serviceability in mind, offering ample space around the generator to facilitate servicing, while keeping a compact enclosure design requiring a smaller footprint. A removable intake hood has been added for easier accessibility from the service technicians, and greater access is provided at one side of the enclosure to fill and drain the coolant system. Safety systems providing warnings, the balance of plant alarms, and shutdown notifications have been embedded providing greater control of the site’s operation.

These natural gas enclosure solutions are offered as a fully integrated package including piping, cooling, and wiring requiring minimal power connections during the on-site installation phase. Available with a pad or roof-mounted radiators, these enclosures provide greater flexibility to choose what best fits the site’s needs.

Additionally, variable-speed fans are incorporated within every enclosure package for optimum ventilation while maintaining low energy consumption.

“Cummins is releasing high quality, cost-effective, plug-and-play standard gas generator enclosure solutions which enable shorter production lead-times, fast installations, and improved serviceability. With easy to install components, built-in safety features, and remote monitoring capabilities, customers can be assured that their sites will operate reliably without incurring additional maintenance, labor, and installation costs,”

said Lucio Kroll, General Manager for Cummins North America Gas Business.

Coupled with the above capabilities, customers can expect shorter lead times and faster setup due to the pre-installation support and rapid response. Best-in-class aftermarket capabilities are offered through Cummins Integrated Gas Sales engineers, who are supported by Cummins global distribution system of service technicians, engineers, and parts that are on hand to assist at every stage of the process, from site review to testing and commissioning.

Source: Cummins

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Cummins introduces its latest marine generator at the Genoa International Boat Show

Cummins Inc. gave participants of the Genoa International Boat Show their first look at the new Onan C-Power QSB7E generator for the recreational marine market. The new product is available in both 50 and 60 Hz models, with an output of up to 195 kW.

“We understand that luxury yacht manufacturers face growing demands for comfort and peace of mind,”

said Michel Kozulic, Marine Business Development Manager at Cummins.

“Cummins’ QSB7E generator provides maximum reliability thanks to a commonality with its proven commercial marine generator portfolio. We know that peace of mind is the greatest customer benefit that we can pass along to our OEM partners when designing power solutions for this market,”

Kozulic continued.

 

While reliability may have been the top priority, the QSB7E offers many other benefits that customers will enjoy. From the aluminum sound enclosure to the ease of maintenance with single-side service access, the QSB7E is the perfect companion for a relaxing and worry-free voyage. Boatbuilders will appreciate the engineering attention paid to help ease installation as well. The water-cooled exhaust boasts an impressive space savings of approximately 150 mm thanks to a unique rear-facing configuration. The generator base offers multiple outlets for fuel and battery cables.

While the enclosed QSB7E is a new offering for the recreational market, the non-enclosed QSB7 generators have been providing reliable prime and emergency power for hundreds of commercial marine vessels since 2012. The QSB7E for recreational applications offers identical power nodes as its commercial counterpart and shares the same engine, alternator options, and controls.

Flexibility was also a key design consideration by Cummins’ engineers. With a total of 12 QSB7E models to choose from, there is not only a range of outputs to select from but also unclassed, class-ready, and full-class versions of the product. While the 2300 mm by 11000 mm dimensions and exclusive rear exhaust mean that the QSB7E doesn’t take up any wasted space, the generous power output makes it an ideal fit for even the largest of superyachts.

Source: Cummins

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Every day and for many years, the cable railway traveling in the Tyrolean Alps to the top of Zugspitze has been carrying hundreds of people to an altitude of 2,964 metres. At a speed of 10 metres per second, the trip takes about seven and a half minutes, powered by two electric motors of 500 kW. In the driver’s cab, control of the current motor status – slow, idle, forward, reverse, accelerate, high-speed and brake – requires a high level of accuracy and reliability by the speed control system. After all, passenger comfort and safety are first.

However, the components in mountain railways are exposed to harsh conditions: wind, rain and snow shape the ambience, temperatures range from double-digit minus degrees in winter to high plus degrees in summer. A perfect application example for the HeavyDuty tacho generators from Baumer Hübner, here analog tachor generator TDP 0.2 LT which is a particularly robust and precise speed sensor variant. What exactly does “HeavyDuty” mean?

HeavyDuty as encompassing performance promise

“HeavyDuty means “heavy-duty”. To Baumer Hübner, however, this is much more than thick-walled housings and corrosion protection. HeavyDuty is the encompassing promise of never letting users down thanks to reliable performance for many years. A prerequisite particularly in mountain railway applications. To ensure this, some specific criteria must be met:

Mechanical robustness of course is key. Tacho generators in mountain railway drives must withstand shocks, vibration and other impacts the rotating shaft is exposed to for many years, without losing any of their functionalities. After all, product exchange is expensive, not because of tacho pricing but because of installation in places difficult to access and system downtime during exchange. Robust housings with solid walls are a good start, so TDP 0.2 LT comes in a die-cast aluminium housing and with stainless steel shaft. But also the interior must be protected against shocks and vibration. TDP 0.2 LT with bearings at both shaft ends is capable of enduring high radial and axial shaft load.

HeavyDuty tacho generators must withstand dust, dirt and moisture which requires a sufficient level of tightness. For this reason, the HeavyDuty housing is well sealed, especially at critical, neuralgic points – shaft and electrical connections. In addition, appropriate materials and coatings protect against corrosion by salt water or chemicals.

Tacho generators do not integrate electronics and therefore are extremely durable against harmful impacts by electromagnetic fields. So, nothing stands in the way for routing live, unshielded cables nearby. Furthermore, shaft currents induced by voltage differences might burn the bearing lubrication which results into bearing destruction. The electrically insulated interior of HeavyDuty tacho generators is therefore well protected against such harmful influences.

Last but not least, precision is another valuable virtue of these HeavyDuty heavy weights. Tacho generators must deliver reliable signals at all times to ensure precise drive control and regulation. Based on the speed information, the controller can identify any drive speed deviation and will intervene. HeavyDuty tacho generators in heavy vehicles such as mountain railways must be as precise as smaller speed sensors. It is not without reason that TDP 0.2 LT is field-tested and extremely reliable. It delivers a 60V output signal already at 1000 rpm; at the maximum operating speed of 10,000 rpm the controller is even provided with up to 600V.

High-precision tachometer voltage throughout the entire speed range

The conventional combination of copper commutator and graphite brushes in tacho generators has long been outdated. The copper oxide layers on the commutator cause irregular transition resistance and thus high ripple in tachometer voltage, so low speed would not be accurately detected. However, graphite with good sliding properties ensures a long brush service life. The combination of copper commutator and silver graphite brushes is much more appropriate for low speed detection, since precious metal brushes apply a highly conductive “patina” to the commutator. However, this solution is sensitive to adverse ambient conditions such as oil, grease or air containing sulphur and salt. Under such conditions no patina would build up and the said good transmission properties would be lost over the entire speed range. In addition, there is increased wear because the metal-containing brushes run directly on the copper layer.

LongLife® is what Baumer Hübner calls their tachometer technology patented in 1987 which combines the positive of above procedures and eliminates the drawbacks. In a special process and depending on the tacho variant, Baumer Hübner embeds one or two massive silver tracks into the commutator surface. The track can be very fine thanks to relatively minor tacho currents. TDP 0.2 LT features even two silver tracks. This ensures permanent low contact resistance even under difficult conditions. And it allows for a 60 mV/min-1 voltage constant of TDP 0.2 LT resulting in a wide detectable speed range from ≤ 0.08 to 10,000 min-1, with both mechanically and electrically limited maximum speed. TDP 0.2 LT therefore provides a dynamic range of 1 : 125,000. The brushes especially modified by Baumer Hübner together, with the LongLife commutator ensure maintenance-free service life that even will exceed that of the ball bearings.

LongLife® even for ski lifts

Ski lifts carrying millions of skiers to mountain peaks every year have likewise tough requirements on drive control. Here too, to ensure passenger safety manufacturers rely on tacho generators that have proven themselves in many applications. They ensure reliable equipment functionality even during severe frost, snowfall and icy winds. Today, speed-controlled drives are also common in ski lifts for smooth starts and variable travel speed. For decades, lift manufacturers have been deploying analog tacho generators by Baumer Hübner such as GMP 1.0. The tacho generator is directly connected to the slowly rotating cable wheel via step-up converter and chain wheel drive. This way, dead speed in the motor gearbox is isolated from the control loop and generates sufficient speed signals even under harsh ambient conditions. The GMP 1.0 also features two silver tracks for permanent low contact resistance and thus a widely detectable speed range with good transmission quality of measured values. The robust design and standard temperature compensation make the tacho generator ideal for use in the harsh conditions of snow-covered mountains.

More than half a century of experience in HeavyDuty tacho generators and encoders has evolved the comprehensive Baumer Hübner portfolio of reliable, precise and durable product variants – from small to large designs. They support all relevant analog and digital interfaces and excel with the capabilities required to withstand even adverse ambient conditions. Application examples like mountain railways and ski lifts clearly prove that for users with high requirements the HeavyDuty Original is the right choice in this encoder class.

Source: Mepax

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The models that have already been developed are now joined by HRFW S+ and HRFW S+ generator sets (with FPT and Scania engines) which offer low noise levels, making them some of the most competitive models that operates for urban areas, sporting, music and cultural events, where noise restrictions require generators to be increasingly quiet. Discover the whole range and all the technical specifications for each model.

This low levels of noise emissions have been achieved thanks to an improved and more optimized design of the air intakes and outputs. A dual core exhaust system has also been included as standard, not to mention top-quality insulating materials such as high-density, 100mm thick rock wool and silent blocks that have been specifically sized for the engine-alternator assembly and its dynamic characteristics.

The new design also contemplates the complete insulation of the control panel, for all models of HRFW S+ and HRSW S+ series.  This remains insulated from the rest of the compartment to avoid noise emissions when the door is opened to manipulate the panel.

To guarantee the greatest possible running time, high-capacity tanks have been added in certain cases. If we add to this the fact that all the engines have electronic injection control, we can guarantee a running time of at least 24 hours and in some cases, even as much as 35 hours. That amounts to more than four working days without having to refuel.

The Silent Plus range features drainage valves to make it easier to clean the radiator. The generator sets in this range that have an FPT and Scania engines also include low-level coolant sensors for an even more accurate control. Optional features include Powerlock outlets with 100% of the genset’s rated kW capacity, for quick, simple and safe connection.

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