• Shaft Voltage Discharge Testing Provided by L&S Electric

    Bearing damage resulting from shaft currents going to ground through the bearing have become more and more common with in increasing use of variable frequency drive applications in industry. The best measurements to identify problem causing shaft currents are taken with an oscilloscope.  While in operation a probe is placed on an exposed area of the motor shaft to gather the shaft voltage data for analysis. Both DC and AC motors controlled by a variable frequency drive can cause shaft currents.   These shaft currents when going to ground through the bearing can be destructive causing the
    09 Sep
  • REC Line Superintendant’s Conference

    There was an excellent turnout at the conference at the beautiful Florian Gardens in Eau Claire. Our next conference is next Wednesday in La Crosse for the WHEA annual convention, as well as the WWA annual conference in Madison.
    09 Sep
  • Bearing Analysis provided by L&S Electric

    Why a bearing failed can be identified many times by tell tale wear patterns on the bearing components. Reliability can be improved if corrective actions can be implemented from the findings of bearing analysis. To see what kind of analysis L&S Electric provides, please read this PDF of a sample Bearing Analysis Report. Motor’s sent in for repair which you want bearing analyzed: Should your company send a motor into the shop which had failed prematurely or has a history of reliability issues please tag it to have bearings analyzed.  Bearings then are saved for analysis and orientatio
    08 Sep
  • Wisconsin REC Line Superintendants Conference

    Join us at the annual Wisconsin REC Line Superintendents Conference in Eau Claire on Wednesday, September 8 at the Florian Gardens in Eau Claire (2340 Lorch Ave, Eau Claire, WI 54701) Since 1928, the Municipal Electric Utilities of Wisconsin (MEUW) have represented the locally-owned, locally-controlled municipal electric utilities in Wisconsin. L&S Electric is proud to be a member of the Wisconsin Utility Suppliers Association.
    06 Sep
  • What can L&S Electric, Yaskawa, & Focus on Energy do for you?

    Now more than ever, Wisconsin businesses are looking for ways to save energy and money and protect their bottom lines. Installing a variable frequency drive (VFD) can increase your overall machine operating efficiency by running it only when and as much as its needed. You save money and reduce maintenance costs. [caption id="attachment_116" align="alignleft" width="108" caption="Yaskawa V1000-4X VFD NEMA 4X/12 Microdrive Washdown"][/caption] Any VFD can qualify for incentives. Yaskawa offers an incredible variety of VFDs to meet you requirements. The greatest potential for using VFD technol
    03 Sep
  • L&S Electric’s Online Motor Testing

    Our experienced technicians use innovative technology for online monitoring of power circuit issues, load, and performance, giving you a comprehensive look at overall integrity of your motor. Using the online motor testing equipment, L&S Electric provides root-cause analysis through the separation of mechanical and electrical issues. Along with any three-phase induction motor, it will also monitor the activities of Variable Frequency Drive (VFD) applications. L&S Electric's on-line capabilities create an accurate assessment of operating load conditions over time. Results are immedia
    01 Sep
  • Gray Matters

    Recently, I had the opportunity to be involved in a discussion with an L&S motor repair supplier. This supplier has a segment of its operation certified to ISO 9001, but another division with multiple locations, is not. While the discussion road I was attempting to walk was, why not the entire division, he began asking questions about our system. We talked about work instructions, standardization of repair standards within and between L&S repair locations, and how we try to define, document and adhere to specifications (customer/L&S/EASA) in black and white. He said, “This is wha
    31 Aug
  • Wisconsin Wind Works Wind Energy Symposium

    L&S Electric is participating in a panel discussion during the Wisconsin Windworks Wind Energy Symposium. The event takes place from 8:00 am to 5:00 pm on October 13 at the Frontier Airlines Center in Milwaukee. Dave Lisle, Wausaukee Composites, Mike Manna, Milwaukee Machine Works, and Larry Steffens, Merit Gear, beginning at 10:35 am, join L&S Electric Vice-President of Sales & Marketing, Jeff Wendorf. For more information, visit their website.
    30 Aug
  • WRWA Summer Expo

    Beautiful weather, good food, great people. A good time.
    26 Aug
  • Customer’s Emergency: 15 Feet of Flooding

    Saturday, July 31st was anything but a normal day at a Chicago electrical utility station. I received a phone call at 8:30 AM from a contact who works at the station saying he was notified that they had five feet of water in the lower level of the building due to the 8-13 inches of rain the area received the night before that caused a local canal to overflow and flood the station. He called back at 1:30 PM saying, the lower level had received 15 feet of water. The station named a coordinator for the motors and he and I started to coordinate the pick-up and return of completed motors, as well
    25 Aug
  • Horizontal Boring Mill to be installed at L&S Electric, Minneapolis facility

    Last November, L&S Electric purchased a horizontal boring mill from a facility in Greenville, South Carolina. It features Fanuc servomotors, Heidenhain glass scales, and ball screws. The spindle diameter is 5 inches (compared to 4.33 inches for the mill at L&S Electric-North) and is driven by a 30 HP motor. The table size is 60 inches × 110 inches. [caption id="attachment_37" align="alignleft" width="288" caption="Boring Bar at L&S Electric Minneapolis"][/caption] The machine weighs approximately 77,000 pounds and requires a specially constructed foundation: a 3-foot thick × 1
    23 Aug
  • Hydro Generator Repairs at L&S Electric-Minneapolis

    Our Minneapolis branch has been busy with several large projects. One big project has been an 1890 vintage GE "inside out" hydro generator. It's called inside out because the DC field is located on the stator, as shown in the photo. The AC voltage is generated in the wound rotor and collected off a set of slip rings. [caption id="attachment_26" align="alignnone" width="216" caption="1890 Vintage GE Inside Out Hydro Generator"][/caption] Minneapolis is also working on a wound rotor for a local power plant that has been VPI processed and has been placed in a rotisserie cart to cure in our lar
    23 Aug
  • A Message to Our Valued Customers

    Legislation passed prohibiting motor manufacturers from producing EPAct motors after December 19, 2010. This decision impacts the availability of specific types of motors. Contact your L&S Electric account representative for a description of the motors covered and how you may be affected by the new legislation.
    20 Aug