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Load Tap Changer (LTC) Upgrade in Missouri

Repairs and upgrades on a ge lrt-200a ltc for a municipal utility in lamar, missouri

In this case, Solomon Corporation’s substation field service repair department contracted with a municipal utility in Lamar, Missouri to perform repairs and upgrades on a GE LRT-200A LTC (load tap changer). The events that led up to Solomon Corporation’s involvement with the repairs and upgrades began with a massive power loss.

The transformer’s control panel had become unreliable for the Missouri municipal utility and subsequently caused a catastrophic power loss for the town’s residents and a large manufacturing facility. The first power shutdown occurred on a record-breaking cold February afternoon. Solomon Corporation’s crews were able to mobilize in 90 minutes. Arriving in Lamar, Missouri, the crew was initially hampered by snow and darkness but were successful in restoring power that evening.

The following year proved uneventful for the small Missouri utility, but another power shutdown eventually occurred. After discussing the features and benefits of a new load tap changer with the utility, a decision was made to have Solomon Corporation’s field technicians install a Beckwith M-2001C-6SV microprocessor-based LTC control.

The Beckwith model was chosen for its many features and ease of retrofit. After some fabrication to accommodate the adaptor panel, Solomon installed the new controller, all control panel operations were verified, the controller was set to log several key data points and the transformer was re-energized. This operation was completed in 2 ½ hours.

A few months later, another shutdown occurred. Thanks to the Beckwith’s data logging feature, the stored data pointed to the root of the problem, and in turn, the issue was corrected. Due to the fail-safe design of the controller, the Beckwith also prevented equipment-damaging voltage increases at the local manufacturing facility. For more details on the product specifications related to this case study, please see the supplemental information below.

Solomon Corporation specializes in repairs and emergency service on distribution transformers. We also offer recycling and disposal of surplus transformers and regulators. If you wish to contact Solomon Corporation to help you with your specific project requirements, or to request a quote, please click here to contact our sales and procurement team.

Product Description

Repairs and upgrades to this LRT-200 LTC transformer control

Capabilities Applied/Processes

Transformer Repair/Upgrade

  • Replace LTC Control & Add Adapter Plate
  • Check all Components in the Control Scheme
  • Verify Operation After Conversion

Overall Transformer Dimensions

Low Voltage Load Tap Charger (LTC): ±16 Steps @ 5/8% steps
Load Tap Changing (LTC) Mechanism and Controls:

  • Mechanism Type: GE LRT-200
  • LTC Control: Beckwith 2001C Micro Processor Control
  • Control is Designed w/ 120 VAC for Control Power

Industry For use

Municipal Utility

Turn Around Time

4 to 8 Weeks

Delivery Location

Lamar, Missouri

Product Name

LRT-200 LTC Transformer Control Repair/Upgrade

Testimonials from our customers

Solomon Corporation is the top manufacturer of high voltage power transformer sales, service, purchasing, repair and teardown services. Below are just a few examples of our work. If you would like more information on our products or services, please contact us today.

    “Once again, Solomon Corporation has exceeded expectations in helping Jewell Operations meet its goals. Thank you for your continuous efforts in design, delivery, and pricing. You have set the standard for how we purchase our assets. We look forward to working with you in the future as a Vendor of Choice. Job well done.”

    Rick Taylor

    Maintenance Manager

    SunCoke Energy Jewell Operations

    Redstone Arsenal is a four star command and the headquarters for Army Material Command. The base has over 40,000 employees, mostly engineers and scientist, who support critical on-going theater operations as well as a large on base NASA operation. My responsibility to keep base operations going with available power would be compromised without having reliable power and related components. Of these components, Solomon Corporation has a critical role in keeping base operations in power. Solomon has been a mainstay at Redstone Arsenal for about 20 years. The quality of the transformers are second to none as is their customer support. Solomon Corporation is the specifying standard for transformers at Redstone Arsenal and my preference over name brand original equipment manufactured transformers. My faith in the reliability and service of Solomon is unwavering and I don’t have any reservations about recommending them.

    Pete Green

    Senior Electrical Engineer
    US Army IMCOM

    On June 26th we had a fire burn down about 2.5 miles of our 25kv distribution line. We thought no big deal, we will just haul our mobile substation over there, and we’ll be back in business. This is the same mobile substation that Solomon Corporation re-worked for us a couple of years ago. Everything went smooth until we actually energized the unit and found we had no control power to the recloser control and no power to the cooling fans.
    I got on the phone with Terry Hamel on June 27th and explained our situation to him. He and Eric Carlson were on site on July 2nd to figure out what was wrong and to make it right! I think it is important to let someone at Solomon know how much I personally appreciate that kind of service! Eric and Terry dropped everything to get all the way out to Nevada and make sure we were taken care of.
    In fact, while they were here, we had another fire burn down nine of our 69kv transmission structures, and they wanted to know what they could do to help us out with that. I don’t know of too many companies that would do that.
    We are very isolated out here in rural Nevada, and it’s companies like yours that help me do my job. Everyone I have ever worked with at Solomon has bent over backwards to make sure I have gotten everything I have needed – from Grand Junction, CO to your headquarters in Solomon, KS. You should be proud of your employees.

    Michael J. Venturino

    Substation Technician
    Mount Wheeler Power

    The Solomon Crew did another great job with their recent project at the El Paso Electric Company (EPE) sites. The crews, as they did in the past project at EPE’s Newman Power Plant, showed that they worked as a team to complete the task at hand, and most importantly, they worked in a very safe manner. They showed professionalism and good work ethic from the time they arrived at EPE to the time they left. Bill and Ken, Solomon Field Leads, were in constant contact with me, providing daily updates from the different work sites throughout the duration of the project. EPE’s substation personnel did a final walk-through of the different sites upon completion of the project, and the substation supervisor was satisfied with the sites. The areas where equipment was located were left clean and free from any debris. I also received good feedback from EPE’s Safety Sitters, who were on-site for the duration of this project, on Solomon Crew’s professionalism.

    Oscar Trillo

    Environmental Department
    El Paso Electric Company

    The Clay Center Public Utilities Commissioners and I would like to acknowledge your efforts to resolve our problem. Your personnel, as usual, reacted professionally and went the extra mile to help. The transformer was back in service within four hours of my call. Having a resource like Solomon to respond to emergencies is very valuable to a utility. I will personally remember your efforts and share my thoughts with my fellow Utility Directors. Thank you.

    Bill Callaway

    Director Of Utilities
    Clay Center Public Utilities Commission

    I just wanted to say thanks for your help and support on the 500KVA transformer problem. We had a faulty transformer at a customer location. I contacted my Solomon Corporation Territory Manager while he was attending his kid’s basketball game. He returned the call, and provided the technical help we needed to troubleshoot the transformer. We found the problem and were able to get the customer up and running without expensive downtime.
    We want you to know that we appreciate the quick response and will contact Solomon when we have future transformer needs and repair.

    Russ Hogelin

    Company President
    Cahaba Electric, Inc.