Sometimes, the time comes when you need to put your money where your mouth is. Steiner Electric did just that when it matched a 20kw Kohler generator that it distributes against a higher kilowatt-rated competitor’s generator in a head-to-head, Live Load Test.
The Kohler generator came out on top in this live test performed in front of several residential Kohler Dealers at recent Annual Power Systems Kohler Dealer Conference.
To make this a fair test, the two generators were subjected to the same parameters. Both generators were hooked up to the same gas supply line and pressure. Both generators ran at 240 V and 60hz, and both generators had the same block load applied of 70 A per phase.
The result of the comparative test showed that the Kohler generator outperformed the competitor’s model. This despite the competitor being rated at 22kw for propane and 19.5kw for natural gas, while the Kohler model was rated at 20kw LP and 18kw NG.
Here are results of the Live Load Test when applying a block load of 70 A per phase to each generator using natural gas:
Voltage dipped to 221.5V
Frequency dipped to 58.2hz
Voltage dipped to 202.1V
Frequency dipped to 54.87hz
The Kohler generator also had superior results during recovery when removing the load:
Voltage overshoot 245.5V
Frequency overshoot 62.19hz
Voltage overshoot 251.0V
Frequency overshoot 63.76hz
An average house supplies 120/240V and 60.0hz. House lights, refrigerators and washing machines run at 120 V and 60hz. Air conditioners, electric dryers, electric stoves, and well pumps ideally run at 240 V and 60.0hz. So, the closer the voltages are kept to the 120/240V and 60hz, the longer appliances will last.
When selecting a generator, you must calculate the essential wattage requirements you wish to use during an emergency utility outage. Your total wattage requirements will determine which Kohler residential generator set system will best fit your needs. In doing so you also need to carefully review inductive and resistive loads of all your appliances. Most appliances require more current to start (inductive loads) than to run (resistive loads) therefore when large appliances cycle on and off, they can create a surge in demand for power.
Kohler home generators provide better voltage and frequency regulation along with ultra-low levels of harmonic distortion for excellent generator power quality to protect your valuable electronic due to the use of the PowerBoost ʳ Technology. This feature helps reduce the strain caused by these load surges.
Kohler generators maintain outstanding power quality even in a home where power demands are fluctuating. Voltage regulation is critical because if the voltage is too high it can damage sensitive electronics such as the circuit boards on new appliances, LED TVs, computers and other technology. Conversely, when voltage is too low, it can affect motor performance on HVAC/R systems and shorten the life of the motor.
In addition, frequency will affect motor performances and reduce efficiencies if the frequency does not match the motor’s frequency design specifications.
The Kohler 20RESD, the generator used in the Live Load test, features the company’s patented PowerBoost technology that allows the stator winding to accommodate peak motor starting demand and prevent overloading conditions.
Kohler generators handle those spikes in power without dropping power to other devices operating in the house.
For more information, please contact your Steiner Power Systems application specialist or call (847) 956-3098 for more information.
“Leading the way to a connected future” was a theme for this year’s LIGHTFAIR International, a show in which industry leaders showcased a variety of connectivity, ease of use, and future proof concepts.
Technologies ranged from smart, turnkey lighting systems to lamps with improved AC/DC converters to reduce flickering. Wireless technology was omnipresent with many companies staking their technologies to Bluetooth and Zigbee mesh network protocols. LiFi, the high speed bi-directional protocol that comprises multiple LEDs that form a wireless network was also seen at the show.
Other booths, filled with improved connectors, relays, filters and cabling abutted those with low powered, plug-and-play devices, more efficient control modules, ballasts and drivers, and myriad other technologies. Even the most disparate product, seemingly, played a role in furthering the connectivity and ease-of-use concept at this annual event held this year on the shores of Lake Michigan.
Back to Chicago
LIGHTFAIR, the annual architectural and commercial lighting trade show and conference, sponsored by the Illuminating Engineering Society and the International Association of Lighting Designers, ran for a total of 5 days at Chicago’s McCormick Place.
Held in Chicago for the first time since 1995, the event drew more than 25,000 attendees. A two-day, pre-show conference held May 6-7 led off the show, followed by three days of exhibits and more conferences.
Amid that throng was a group of more than 100 Steiner customers who caravanned to the show from Steiner’s new Lighting Technology Center (LTC) in Chicago. The group came on buses that originated from Steiner’s Elk Grove and Rockford facilities. The group stopped to breakfast and tour the LTC, and then head to the LIGHTFAIR show with the lighting experts from Steiner.
To learn more about the constantly changing array of lighting options or make an appointment to view the new Lighting Technology Center, contact (800) STEINER (783-4637).
A Gamut of Applications
While LED technology was ubiquitous, of course, what was most telling was not the amount of LEDs on display, but its breadth of use. Indoors to outdoor. From glamorous booths showing refined interiors and exteriors to artistic, futuristic booths of many colors and design shapes, companies from around the world found ways to showcase LED technology. Robust LED technology helped display smart city street lighting to horticultural lighting solutions.
Most of the industry’s leading companies exhibited at the show, including many whose products are distributed by Steiner’s lighting division, and showcased wireless management systems facilitated by LED technology and augmented by sensor technologies.
Traditionally, individual rooms feature separate, individual control systems. A thermostat on the wall takes care of comfort controls; light switches or dimmers control lighting; and shades may have another type of controller, or, equally possible, a pull cord.
Whether for new construction, retrofits or multi-phase construction projects, these wireless light management systems are meant to simplify the installation, setup and management of lighting systems and also will reduce energy usage from lighting by as much as 50-75 percent.
The systems, showcased by a variety of company’s such as Acuity Brands (nLight AIR), Lutron (Vive), Philips (Hue), Eaton (WaveLinx), and more, utilize user-friendly interfaces, set-it-and-forget it control options, and a variety of sensors ranging from occupancy, temperature, quantity and quality of light, etc. . Each technology easily accessible from any smartphone, web browser or similar device.
The total room automation wireless devices, which are compliant to multiple municipal building codes such as ASHRAE 90.1-2016 and Title 24-2016, combined everything from HVAC, lighting and shade control systems to additional building automation devices such as for security and fire awareness into a single platform with a simplified user interface.
These devices are, for a large degree, scalable. This allows contractors, facility managers and others to utilize the technology at their own pace and integrate the technologies use as desired. They can grow from single rooms to whole floors and to entire buildings and campuses. They can turn simple structures into smart buildings with IoT capabilities.
As one company put it, these connected lighting solutions are designed with intelligent power to enhance everyday life; from personalizing smart home solutions that cater to homeowners’ lifestyle needs, to empowering city leaders to improve the safety and quality of life in their communities, and streamlining facilities management and operations for businesses worldwide.
Preceding and setting the stage for the trade-show opening was the announcement of the winners of the prestigious LFI Innovation Awards. These awards highlight the industry’s most innovative products and designs introduced during the last 12 months.
The 2018 LFI Innovation Awards drew 238 entries spanning 14 categories, with each submission judged by an independent panel of lighting professionals. Winning entries exemplified the best in innovative design and thinking.
One of the 7 judges from the IES and the IALD was Richard Wyton, a well-known, corporate lighting consultant with Steiner Electric. Wyton said that each product was scrupulously examined and the vast number of entries were whittled down to 14 entrants and finally down to 1 overall winner and a total of 18 winners in various categories.
The all-star panel of judges honored a broad range of technologies. Several of the awards went to companies whose products are distributed by Steiner.
For instance, multiple innovative LED lighting solutions from Acuity Brands earned top recognition. Winning lighting solutions from Acuity Brands included:
Juno FlexConnect(TM) luminaires won both the competition`s overall
Design Excellence Award and its Best of Category award in the Dynamic Color, Theatrical, Cover, Strips and Tape category. FlexConnect luminaires incorporate the industry’s smallest and most configurable linear optic system, and are ideal for wall grazing, wall washing, and other architectural lighting applications.
CHISEL family of luminaires from Mark Architectural Lighting(TM) won Best of Category in the Commercial Indoor Luminaires category. CHISEL indirect, recessed luminaires present soft luminous gradients and textures that can bring depth and character to any design.
Quantum® ELM2LF Fixed Optics emergency luminaires from Lithonia Lighting® won Best of Category in the Industrial, Vandal Emergency and Exit category. The Quantum ELM2LF emergency luminaires combine the latest LED and optical technologies to deliver an easy to install wall-mount design featuring fixed optics. This design requires no contractor aiming, yet provides uniform distributions.
IOTA Engineering, recently acquired by Acuity Brands, won Best of Category in the Ballasts and Drivers category for its Power-over-Ethernet (PoE) emergency lighting LED battery pack.
“This year`s recognition from the LFI Innovation Awards reflects our commitment to continuous innovation in the lighting space,” said Acuity Brands Lighting Senior Vice President, Sarah Golish. “Winning multiple Best of Category awards and the Design Excellence award further underscores our commitment to offering our customers great lighting solutions that blend quality of lighting and performance.”
Another Steiner supplier to win an LFI award was Philips Lighting, which utilized its LED expertise to win the category of Parking, Roadway and Area Luminaires.
Philips’ winning entry, the Gardco PureForm luminaire, available to view at the Steiner Lighting Technology Center, combines LED performance and advanced LED thermal management technology with a distinct purity of style to provide outdoor area lighting that is both energy efficient and aesthetically pleasing. The family of products includes a bollard, post top, wall sconces and medium and large area luminaires. The entire family can be integrated with a range of control options to easily connect your entire site.
Technology Never Stops
The 2019 LIGHTFAIR International is scheduled for May 19 – 23, 2019, at the Pennsylvania Convention Center, Philadelphia.
You don’t have to wait until next year, however. You can tap into the lighting expertise of Steiner. For further information, and to speak with an experienced Steiner lighting and controls application engineer, please call 1-800-STEINER (783-4637).
May is Huntington’s Disease Awareness month, and it is the mission of the Huntington’s Disease Society of America to spread awareness and raise funds with hope to discovering a cure. Huntington’s Disease (HD) has been called the “quintessential family disease” because every child of a parent with HD has a 50 percent chance of carrying the faulty, deadly gene.
On May 20, the Illinois chapter of the Huntington’s Disease Society of America (HDSA) celebrated the 14th Annual Illinois Chapter Team Hope Walk. The event, held at the Grand Pavilion on the “Riverwalk” in downtown Naperville, gathered families and friends to support each other and raise funds. For the 2nd consecutive year, Steiner Electric was a corporate sponsor.
Huntington’s Disease is a fatal genetic disorder that causes the progressive breakdown of nerve cells in the brain. Symptoms usually appear between ages 30 to 50, and can worsen over a 10 to 25-year period. HD causes a lessening in a person’s physical and mental abilities during the prime years to work.
Approximately 30,000 Americans are symptomatic of the disease, and more than 200,000 others are at-risk of inheriting a gene that over time can mutate and trigger HD symptoms. Within many families, multiple generations have inherited this expanded gene.
According to the HDSA, those at risk of inheriting HD can take a test to find out if they’re carrying the faulty gene. Symptoms of HD varies from person to person, even within the same family. The progression of the disease can be roughly divided.
Donations to the HDSA advocacy group supports research into new therapies, provides services and referrals to HD families and individuals trying to cope with the effects of the disease, and expands educational programs and develops informational materials to bring great awareness and further education about HD into three stages. In the early stage, HD usually includes subtle changes in coordination. In the middle stage, movement disorder becomes more pronounced, and in the late stage, the person with HD is dependent on others for their care as their brain cells decrease.
To learn more about HD, and the work of the Huntington’s Disease Society of America, visit www.hdsa.org or phone (800) 345-HDSA.
Steiner Electric is very proud to have provided footage for the production of the WWII documentary “City at War: Chicago,” a film that examines what Chicago was like during the second world war.
At the beginning of America’s involvement in World War II, President Franklin Delano Roosevelt (FDR) called on the country to become “an arsenal of democracy” – to become producers of war materiel to help defeat the Axis powers — Germany, Japan, and Italy.
A new documentary, “A City at War: Chicago,” looks at how Chicago became a well-oiled production machine, with every man, woman, and child contributing to the war effort. John Davies, the executive producer, along with his co-producer Brian Kallies, says the film explores “just about everything that happened in Chicagoland during WWII.”
The documentary utilizes rare film footage, vintage propaganda movies, period posts, stills and other articles from the period to show viewers Chicago’s transformation into an “arsenal of democracy.” Several key elements that helped the producers achieve the “look” they wanted were donated from the Steiner family archives. These items, which were donated by Rick Kerman of Steiner Electric, included old 8mm and 16mm footage, and other articles either filmed or collected by his grandfather George Steiner during the war years. “We used that all over the film and it really helped us illustrate some points,” says Davies. “It’s vintage and it really gave the movie a look.”
Steiner family film footage that was used in the documentary, included:
Steiner employee sendoff office party for Manny who soon would ship out to serve our country.
Film of Rick’s aunt, Elaine Steiner, standing along the Lake Michigan shore watching as a luxury yacht passes by her. The ship was made by the Henry C. Grebe & Co., a Chicago yacht building company, who would retool its factory to make wooden hulled mine sweepers used in WWII. (The boats would tow a device that produced a magnetic field that triggered magnetic mines. The hull was made from wood so as to not magnetically attract the bombs.)
A backyard scene showing sailors and marines relaxing. It is unknown whether they were on leave or enjoying a few final days before receiving their orders, but the footage was used to illustrate a story shared by author Harry Mark Petrakis. The Chicago-based novelist described watching returning veterans tell soldiers who hadn’t shipped out as yet, “wait, wait, your turn will come.”
Also donated from the Steiner archives were original front pages from WWII-era newspapers and gas-ration stamps issued to Steiner Electric.
Rick explained, “Our friendship with Davies and Kallies goes back many years, most recently the filmmakers produced Steiner’s humorous video: “Tommy Tomagain: Steiner is There, starring Tim Kazurinsky.” When they mentioned their upcoming WWII documentary project, it was the excuse I needed to restore my grandfather’s home videos dating back to the early 1930’s and WWII news reels.”
The shots helped illustrate the prominent role that Chicago and the surrounding communities played in the buildup to WWII. Chicago Mayor Ed Kelly attracted government investment in more than 1,400 companies that re-tooled to support the war effort.
During these war years, Chicago was a major US Navy training area for Navy Air, Carrier, Surface and Submarine Services. An estimated one third of the military personnel serving the Pacific theater were “boot camped” at the Naval Air Station Glenview in Chicago, according to Davies.
The Glenview air station trained aircraft carrier pilots on two carriers docked next to Navy Pier (see picture). The first aircraft landed on the USS Wolverine in September 1942 and between that initial flight and the end of the war, approximately 17,000 pilots, landing signal officers and other Navy personnel were trained on the deck of the Wolverine, and its sister ship, the USS Sable.
Another example is the Orchard Place Douglas Plant (ORD) facility, at which the Douglas Airplane Co. built more than 600 of its C-54 Skymaster aircraft. The facility was so massive that it would later become O’Hare Airport.
“Possibly as much as 30% of all U.S. materiel used to support the war effort was manufactured in and around the City of Chicago,” Davies told the Daily North Shore community web site. “That included a range of items like food, parachutes and tanks.”
The one-hour documentary, narrated by Bill Kurtis, will air in Chicago on WTTW Chicago Channel 11, on Memorial Day, Monday, May 28, at 7 p.m. and WTTW Prime at 10 p.m.
Schneider Electric manual starters and switches are compact and elegantly designed devices that are primarily used to switch motors ON/OFF. Despite their simplicity, they can reverse the motor depending on the model and protect the motor against overloads, shorts, and phase failures in fuse-less applications. These devices, which are typically operated by toggle or push button, come in a variety of options from reversing and non-reversing to multi-speed choices.
It is now easier to configure the right motor starter and switch for your application by using the Schneider EZ Selector. When it comes to manual starters and switches, the EZ Selectors make it especially easy to choose from various versions and multiple options of (type F) fractional starters, (type K) manual switches, and (type M, T) starters with melting alloy overload relays.
Manual starters are designed for low horsepower motor applications. In fact, many small motors use a fraction of a horsepower to run, and Schneider offers manual starters designed specially for these fractional horsepower motors.
The starters are especially suited for being mounted directly onto or near the machine that is controls. They can be used as stop-starts without the need to run extra power cords and wires.
The starters can be chosen based on the type of electronic to be controlled and protected. Is the application a single-phase or three-phase? What is the full-load amperage? Does your application require 1 or 2 pole configurations or 2 or 3 pole configurations?
The environment in which they are to operate is also a primary concern. Some starters must be dust proof or be oil resistant. If a dusty environment, the starter might require a NEMA 12 enclosure that will protect against dust, dirt, and dripping non-corrosive liquids, oil and lubricants. A NEMA 4 enclosure is often intended for outdoor use where extra protection against moisture and wind driven rain is required.
Some models are available in specific NEMA enclosures. Type F fraction HP starters are available in NEMA Type 1 enclosures (oversized and flush-mount enclosure option available), Type 4 enclosures (with zinc alloy die casting), and NEMA Type 3R, 7 and 9 (cast aluminum enclosure).
Various models also have specific operators. For instance, for Type M and T integral horsepower starters, a push button or toggle operator is available in open and NEMA Type 1 enclosure, while a direct acting push button is only available on NEMA Types 4 and 12 enclosures.
Thermal overload is also a consideration to protect a motor against overheating. For example, the ambient temperature of a cabinet with multiple electronics could become so hot that nuisance tripping occurs.
To solve these problems, many switches, such as the Type M and Type T units, feature melting alloy thermal units. Depending on the thermal load, these starters might necessitate their thermal overload protection adjusted for the heat (See video below). The thermal overload protection developed by Square D has a special alloy in it. When the ambient temperature reaches a certain level, the protective relay undergoes a phase change from solid to liquid and shuts off the motor. This greatly reduces the chance of motor damage.
These considerations are just a few options that must be taken into account when choosing the correct manual starter or switch for the particular application.
manual ON/OFF control for small motors in a variety of industrial and commercial installations including fans, conveyors, pumps, and small machine tools. Available in enclosed or open styles, they come in in non-reversing and two-speed versions to control small single-phase AC motors that have separate windings for high- and low-speed operation.
Horsepower rated up to 1hp AC, 0.75hp DC
Overload protection provided by melting alloy thermal units
Available in 1 or 2 pole configurations for AC single phase motors rated up to 1 hp. Two-pole starters can also be used with DC motors rated up to 0.75 hp.
277VAC Max, 230VDC Max (2-pole only)
Manual Starting Switches
Type K starting switches , which use two switches (one to connect the motor for forward rotation and one for reverse rotation), provide manual ON/OFF control of single- or
three-phase AC motors, and also for reversing AC motors where overload protection is not required or is provided separately. They are suitable with three-phase squirrel cage motors. The type K 2-speed manual switches may be used with separate winding three- or single-phase AC motors.
Available in enclosed or open style, with compact construction and a 600 V rating, these switches are suitable for a wide range of industrial and commercial uses including small machine tools, pumps, fans, conveyors, and other types of electrical machinery. They can also be used on non-motor loads such as resistance heaters.
Available in reversing, non-reversing, and two-speed versions
Horsepower rated up to 20hp AC, 2hp DC for self-protected motors
Available in 2 or 3 pole configurations
600VAC Max, 230VDC Max
Integral Horsepower Manual Starters
Designed for overload protection and manual ON/OFF control for small single phase, polyphase or DC motors, the Type M and T Integral horsepower starters are available in NEMA sizes M0 – M1, and come with either Push Button (M) or Toggle (T) operators. Options include non-reversing, reversing, and two-speed applications. Typical applications include small machine tools, pumps, fans, and conveyors.
Pilot light and auxiliary contact available
Horsepower rated up to 10hp AC (3-phase), 5hp AC (Single-phase), 2hp DC
Available in 2 or 3 pole configurations
600VAC Max, 250VDC Max (2-pole only)
Available in enclosed or open style
Make Selections EZ
Manual starters and switches come with multiple options. With all the product variables from application to enclosure type, voltage to amperage consideration, selecting the appropriate starter or switch can be a challenge. Schneider Electric has made the process simpler by developing the EZ Selector tool.
The EZ Selector tools ask simple “click-to-answer questions,” and the user is self-guided through a process that ultimately leads to the right product for the application.
Order online or call1-800-STEINER (783-4637) to speak with a Steiner sales representative for more information on Schneider Square D Manual Starters and Switches.
Summer is approaching and we’re looking forward to hosting another family fun Steiner Electric event – our 21st Annual Pig Roast! Please join us at our Rockford branch on Thursday, June 21, 2018, from 4:30pm until 7:30pm.
As in previous years, you can check out products and watch demonstrations from an array of vendors who will be exhibiting. More than 50 companies are scheduled to showcase their wares.
In addition, enjoy great food, win door prizes, and hear live music from local favorites, Southern Heritage. A Rockford Area Music Industry Hall of Fame Member (RAMI), Southern Heritage has opened for such well-known musicians as Keith Anderson, David Allan Coe and Lady Antebellum. At the Pig Roast, you can expect them to play music from Johnny Cash to Jason Aldean.
RSVP to attend the event or download the event flyer for more information.
Schneider’s Square D Safety switches are vital components to safety and power control. They are a means to disconnect from the electrical load and provide protection to the branch circuit.
When necessary, they can be used to disconnect manufacturing equipment, heavy machinery and light commercial and residential applications from its power source. Users may need to disconnect equipment from its electrical supply for a variety of reasons from scheduled preventive maintenance to emergency stoppage.
The performance of safety switches is important to the safe operation of many industrial applications. In addition, requirements from a variety of organizations have increased the use of safety switches in many commercial and industrial facilities.
In addition, safety switches are an NEC requirement in industrial and manufacturing facilities. For instance, a safety switch must be in sight from all motors or manufacturing equipment and not more than 50 feet from the equipment it controls.
A key performance benefit of the Schneider safety switch is its ability to break load. A locked motor can draw six to eight times motor full-load current. In an emergency situation, it’s important to have a safety switch with enhanced load-break features such as those featured in Schneider’s switches. A key element of Square D safety switches is its blade and jaw construction that has been designed to manage heavy motor loads and arc interruptions.
Multiple types of disconnect switches are available, and the switch that work for you depends on a number of factors in your working environment. Steiner’s expertise can help make the appropriate choice. Steiner stocks a large inventory of safety switches ready for pickup at one of our convenient locations or on-time delivery to your facility or job site, including: general duty, heavy duty and double throw switches in single and multiple pole, fusible and non-fusible.
Here is a look at some of the most common safety switches.
General Duty Safety Switch
One of the most go-to safety switches are those that are considered General Duty (GD) safety switches. These are designed for residential and commercial applications and where durability and economy are prime considerations. Typical loads are lighting, air conditioning, and appliances. They are suitable for use as service equipment when equipped with a factory or field-installed neutral assembly or a field-installed service grounding kit as applicable.
Voltage: Maximum voltage of 240 V
Current Rating: Max amperage of 800 A
Enclosure: Available in Type 1 and Type 3R enclosures
Certification: UL Listed, File E2875
Standard: Meets or exceeds the NEMA Standard KS1
Heavy Duty Safety Switch
Visible blade heavy duty safety switches are designed for applications where maximum performance and continuity of service are required. All heavy duty safety switches feature a quick-make, quick-break operating mechanism, a dual-cover interlock and a color-coded indicator handle.
Voltage: Maximum voltage of 600 V (ac/dc)
Current Rating: Max amperage of 1200 A
Enclosure: Available in Type 1, Type 3R, Type 4, Type 4X, Type 5, Type 7, Type 9, Type 12 and Type 12K enclosures
Double Throw Safety Switch
Double throw safety switches are designed for manual transfer of one load between two power sources. The units are tough and reliable to provide emergency back-up power connections in accordance with Article 702 of the National Electrical Code, ANSI/NFPA 70.
Voltage: Maximum voltage of 600 V (ac/dc)
Current Rating: Max amperage of 600 A
Enclosure: Available in Type 1, Type 3R, Type 4, Type 4X, Type 5 and Type 12 enclosures
Make Selections EZ
These safety-switch options, and others that are more specific in application, come with multiple options such as various difference in amperage and voltage. In some cases, the question is whether to use fusible or non-fusible switches. Fusible safety switches combine fuses with the switch in a single enclosure. For both fusible and non-fusible safety switches, when the circuit is open, the safety switch disconnects the load from its source of power, while closing the circuit reconnects the load.
With all the product variables from application to enclosure type, voltage to amperage applications, selecting the appropriate safety switch can be a challenge. Schneider Electric has made the process simpler by developing the EZ Selector system.
The EZ Selector tools ask simple “click-to-answer questions,” and the user is self-guided through a process that ultimately leads to the right product for the application.
Order online or call1-800-STEINER (783-4637) to speak with a Steiner sales representative for more information on Schneider Square D Safety Switches.
From general milling of standard metals to milling complex deep pockets for producing aerospace components out of modern metal materials, Sandvik’s CoroMill 390 is a versatile cutting tool with broad functionality.
Sandvik’s “390” cutter family can be used for myriad applications by integrating a large, versatile program, including versions for shoulder milling and long-edge milling. Cutter inserts generate a good, quality 90-degree shoulder and are ideal for ramping and helical interpolation.
For instance, to produce precise contours without steps in repeated shoulder milling operations, the company offers close-tolerance inserts and an exact insert position. The smooth cutting action of CoroMill 390 limits radial cutting forces, which minimizes bending and generates good wall perpendicularity.
The CoroMill 390 assortment of inserts includes cutters with size 07 inserts in dimensions specifically designed for key slots. With a tool diameter that is 0.3 mm (0.012 in.) smaller than the slot width, a suitable amount of stock is left for the subsequent finishing operations.
In another example, using helical interpolation and linear ramping to create holes from a solid workpiece requires a strong insert face geometry. The CoroMill 390 inserts are developed to withstand the stress caused by steep ramping or demanding interpolation, giving a low-vibration process with even tool life.
Plunge milling using the CoroMill 390 produces less stress on your machine spindle because of its vibration damping attributes. Because of this, it is suitable for unstable machines, deep slots, difficult-to-machine areas, and high-radial engagements such as corners.
Incorporating new steel grade
CoroMill 390 is made with Sandvik’s robust steel milling grade GC1130, which is made with the Zertivo PVD coating process that reliably performs even in unstable or challenging conditions such as disparate temperature variations.
The Zertivo process includes a complex set of steps, including pumping, heating, etching, coating, and cooling. Process parameters such as temperature, gas flow, and pressure are crucial to the final tool performance. Each grade is produced with the exact right conditions for that specific grade. The result is improved adhesion between substrate and coating as well as optimized cutting-edge integrity.
The result is great edge-line security and reduced flaking. This makes the insert resistant to chipping.
In addition, the tool’s high-Cr (Chromium) content, in its fine-grain substrate, is optimized to withstand edge-line chipping and cracks arising from difficult machining and demanding conditions, such as temperature variations.
Some of the tools incorporate the company’s Silent Tools™ technology. Sandvik Coromant’s endmill for small diameters, for instance, available with size 07 inserts, is a versatile cutter ideal for shoulder milling, deep shoulder milling, edging, linear and helical ramping, plunge milling, slot milling and face milling.
Insert sizes 07 and 11 are available with Sandvik’s Silent Tools™ damping technology. The upgraded Silent Tools dampening technology will allow machine shops to machine deep pockets for products such as titanium aerospace frame parts.
Silent Tools provide light-cutting insert geometries and high-performance grades that deliver low-cutting forces and vibration-free machining for secure, cost-effective milling. The tool holders are designed to minimize vibrations through a dampener inside the tool body.
The CoroMill 390 Silent Tools can be ordered in diameters from 20 to 32 mm. It is available for both the new insert size 07, as well as insert size 11, with options for either cylindrical shank or Coromant Capto coupling.
Challenges and solutions
Sandvik Coromant calls the CoroMill 390 a “go-to cutter.” As evidence of this, Sandvik has detailed some typical challenges and its solutions.
For instance, pocket milling can be challenging to produce efficient and secure cavity opening. Using helical interpolation and linear ramping to create holes from a solid work piece requires strong insert face geometry. CoroMill 390 inserts are developed to withstand the stress caused by steep ramping or demanding interpolation, providing a low-vibration process with even tool life.
Here is a look at some other challenges:
Process: Slot milling Challenge: Chip evacuation and vibration. Solution: Insert geometries designed for ideal chip formation and evacuation. When milling with large engagements, vibration often causes rapid tool wear. The light cutting inserts of CoroMill 390, combined with cutters with optimized differential pitch, offer a low-vibration milling process.
Process: Face milling/Key Slot Milling Challenge: Metal removal rate and surface finish. Solution: Durable CoroMill 390 inserts are capable of high cutting parameters. -L geometries designed for milling with low cutting forces are perfect for facing surfaces with a shiny finish and close tolerances.
Order online or for more information on CoroMill 390, contact a Steiner Metalworking sales representative at (800) 323-TOOL.
While diesel has been the conventional fuel of choice for backup generator sets because of its initial capital cost advantages, things are changing as regulations, costs and technologies have evolved, and, because of that evolution, natural gas generators have gained in popularity.
“Over the past 15 years, there have been numerous performance developments in gas generator set technology to improve fuel efficiency, reduce exhaust NOx emissions and increase ratings,” according to Clay Hardenburger, senior staff applications engineer for Kohler Co. Hardenburger is the author of a new whitepaper, Gas Generator Set Performance Characteristics, that takes an in-depth look at characteristics of natural gas powered generators, the fuel used, their applications, and more. (To get a copy of the free whitepaper, click here.)
“These key development characteristics combined with incentives to develop renewable energy biogas fuel sources have moved the industry forward to consider gas generator sets as the preferred electrical power generation technology for continuous duty applications when paralleled with the utility,” writes Hardenburger. “In addition, recent expansion of natural gas fuel sources in the United States has resulted in low fuel prices, which is also driving the marketplace to utilize gas generator sets for standby and prime applications typically served by diesel generator sets.”
Kohler Co.’s Power Division offers a slew of EPA emissions-certified LP and natural gas generators in the up to 400 kW range, delivering an installation-ready product for residential power and light commercial applications. Kohler also developed a new line of large natural gas generators that are designed specifically for standby, prime or continuous power applications in the North American market. The large gas gen sets range from 425 kW to 1300 kW (and growing). For applications that require larger industrial generator sets, contact Steiner’s Power Systems division experts and they can help you choose the most appropriate generator.
These natural gas generators run on relatively clean burning fossil fuels such as propane. The lower emission gaseous gen sets significantly reduce carbon monoxide and particulate emissions.
Get your generator locally from Steiner
Steiner Electric, a local authorized distributor of Kohler products, offers an extensive inventory of residential and commercial generators that primarily operate in standby-rated mode utilizing LP or NG fuel.
Models rated for residential and light commercial applications include the 14/20kW RESA models that feature Kohler’s PowerBoost Technology for improved starting power. The generator can easily start and run a 5-ton air conditioner. The 38/48/60kW RCL model offers quiet operation and the Fast-Response II excitation system that delivers excellent voltage response and short-circuit capability using a permanent magnet alternator. The 60kW ERESB model for light commercial application, which utilizes NG and LPG gas, and depending on voltage achieves
a multitude of standby ratings for both gas types. The 80 to 150Kw ERESD models have numerous features including the Fast-Response X excitation system, and sophisticated control systems.
In addition to Steiner’s large inventory of generators, as a registered, certified distributor of Kohler generators, generator experts are available 24 hours a day, 7 days a week for emergency situations. In addition, all Steiner generator experts undergo rigorous training programs that must first be completed and are routinely updated.
Burn it Lean, Burn it Rich
These models operate differently depending on the fuel used, mixture of air and fuel, applications and other factors. Often, there are tradeoffs such as between power and efficiency.
To help straighten out the web of generator options, and best understand the unique factors of each, Hardenburger’s whitepaper addresses the
performance characteristics found in gas generator sets that utilize different fuels and engines, power factor, generator set rating, load requirements, and more parameters.
Fuel sources, for instance, typically come in two categories: methane-based fuels sources and hydrocarbon-based fuel sources. As Hardenburger explains, methane-based fuels such as pipeline natural gas are for use in high-compression ratio, lean-burn engines. Hydrocarbon-based fuel sources such as propane can be used in low-compression ratio, rich burn engines.
Hardenburger says that gas engines are classified as either lean-burn or rich-burn combustion types. Each type has its own advantages and disadvantages depending upon the application.
Lean-burn engines are associated with high-electrical efficiencies, and are typically used in continuous parallel with the utility applications as a primary power source because of limited transient response capabilities. Whereas rich-burn engines are usually associated with applications where transient load response is more critical than fuel efficiency. They are typically applied in emergency standby applications where the generator set system is the secondary power source when utility power is not available.
Rich-burn engines are a better choice in applications where large transient load changes above 30% are required. An LPG fuel source can be utilized in these applications without derate if low compression ratio engines are utilized.
Lean-burn engines are a better choice in applications where the utility is always present, and the required operational capacity exceeds 8,000 hours per year. Fuel efficiency is a key consideration in continuous applications, so engines with high compression ratios are typically utilized. Heavy hydrocarbon fuels such as LPG cannot be utilized in these applications without significant engine derate.
To help understand the basics of gas generator characteristics, their benefits and tradeoffs, download the Kohler whitepaper, Gas Generator Set Performance Characteristics, or reach out to your local Steiner Power Systems application engineer at 1-800-STEINER (783-4637).
An MRO or electrical contractor has to be prepared for just about any contingency, and being prepared often means having the right tool. The good news is that Steiner has a broad inventory of tools, tool accessories and equipment for you, and the better news is that from now until March 15, 2018, if you buy tools, equipment and tool accessories from select manufacturers, you may be eligible to receive a free Carhartt jacket or a utility cart.
If you purchase $1,000 or more in tools, tool accessories or equipment from the select manufacturers below, you will receive a free Carhartt jacket. If you purchase more than $2,500 in tools, tool accessories or equipment from those companies, you can receive a free utility cart. The special promotion runs through March 15, 2018. Limit one offer per customer. While supplies last.