Powering your transformer needs with experience, craftsmanship, and technology.

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1 Powering your transformer needs with experience, craftsmanship, and technology.

2 Powering Productivity With experience dating back to the 1970s, OTC Services, Inc. is committed to the remanufacturing and repair of dry-type and liquid-filled transformers for both industrial and utility clients. Our state-of-the-art engineering, manufacturing, winding and test facilities streamline the process and allow us to provide very aggressive lead times. We are ideally located in Northern Ohio and provide dedicated rail access, large truck delivery and a 100-ton overhead crane. Our location and accessibility provide you the most efficient service and turn-around in the industry. At OTC Services, our on-site engineers utilize only the highest quality materials for maximum renewal of your transformer life cycle. We guarantee the proper assessment, remanufacture, or repair of your project. Our remanufactured transformers come with a new product warranty for additional peace of mind.

3 Experience There is no replacement for experience. The experience our engineering and manufacturing experts offer you is unrivaled in all facets of transformer remanufactured repair. Craftsmanship Our quality craftsmanship is a result of our culture. We have a veteran team of skilled specialists who know the product and take pride in their workmanship. Technology In using the latest technology such as computer-aided design software, finite element analysis and voltage distribution programs we are able to enhance and validate our designs prior to implementation. Customer Service Our commitment to customer service is demonstrated by our ability to respond quickly and accurately. Phone calls are answered in-person and we are dedicated to providing prompt service with the most competitive lead times. Our Scope of Services Dry-type remanufacturing ranging from 480V class specialty transformers up to 10 MVA, 35 kv class power transformers Liquid-filled remanufacturing for small to medium-power transformers up through 100 MVA, 230 kv Field Service for repairs, maintenance and testing on-site Repair for all types of transformers up through 150 MVA, 230 kv New manufacture Strategic storage of customer owned transformers for on-demand situations Parts inventory and tracking system to ensure availability (OTCS) Toll Free Local info@otcservices.com

4 Transformer Remanufacturing OTC Services remanufacturing process renews the life cycle of your equipment to current industry standards. We review such changes as upgrades to capacity, changes to system voltages and loss reduction. Our on-site design engineers also design your transformer to eliminate any weaknesses found that may have caused the failure. We provide a detailed inspection report before we begin your transformer remanufacture. Prior to return shipment, we test remanufactured transformers as new at 100% levels in accordance with the latest ANSI standards in one of our test stations. We return your transformer to you on time and on budget with a new product warranty. You will find our experience and quality to be unrivalled and our economic and environmental benefits to be remarkable. Consider the advantages. Transformers are remanufactured and upgraded using the latest design techniques and materials often resulting in increased clearances, improved dielectric strength and lower temperature rises Remanufacturing can provide approximately 40% cost savings and shorter lead-time as opposed to a new transformer Our industry-recognized, on-site engineering staff provides excellent redesign consultations Our transformers carry a new product warranty The unit maintains its original profile and electrical connections assuring its fit into its previous space Eliminating disposal costs, and recycling materials and fluids provides a positive environmental impact Our product experience includes numerous original equipment manufacturers both domestic and international

5 Field Service OTC Field Service provides superior turnkey service using highly skilled field technicians along with the latest technology in oil processing equipment. Our field service rigs are equipped with SESCO oil processors along with all the tools and equipment to handle your on-site needs from tear-down to testing. Our field service coupled with our remanufacturing engineers and facilities offers unique and cost-effective solutions geared to keep your operations powered up. Field Repair and Reconditioning Transformer Relocation Failure Investigation and Testing Preventative Maintenance Capacity Upgrades Fluid Service Transformer Repair OTC Services also provides a full range of transformer repair services. You can trust our experience to deliver the quick turnaround you need to minimize downtime and keep your operation up and running. Our facilities and accessibility options allow us to unload your transformer quickly, assess issues, provide your report, perform the necessary repairs, and return it to you quickly. Repairs play a critical role in extending your transformer s life. By utilizing the latest technology we can assure all repairs meet the current industry standards. Investigation and elimination of stray gassing, bushing and gasket replacement, cooling upgrades and LTC upgrades are just a few examples of our repair capabilities.

6 A Powerful Facility General Facility 16.1 acre site, currently utilizing less than 10 acres 5 acres of secured exterior on-site storage 100,000 square foot facility 45,000 square feet dedicated to remanufacturing 45,000 square feet of warehousing 10,000 square feet of office space 100-ton overhead crane 37 foot hook height Direct rail spur into the facility Manufacturing Facilities Two industrial bake-out ovens for drying and heating prior to sizing (4) Vacuum chambers for core and coil dry-out and processing Two enclosed spray paint booths Two core tables for replacement of original core insulation Vacuum degasification, regeneration and filtration equipment to renew transformer oils Oil Storage/Processing: 80,000 gallon capacity storage tanks adjacent to facility with NEW vacuum degasification system and Fuller s earth treatment facility with 1/2 micron filters Winding Facilities New refurbished 12,000 square foot facility Complete segregation from other manufacturing areas Dedicated oven for coil sizing Seven winding machines Ability to wind vertical shell Hydraulic coil up-ender and hydraulic coil press Stock dry and oil type insulation Test Facilities Testing capability in excess of 850 kv BIL Two separate test stations comprised of 3,000 square feet Test substation with 10 MVA, 0-10 kv regulator and 480 v to 69 kv step up Six LV and HV capacitor racks for power factor correction High accuracy loss measurement system 100 kv / 2000 Amp 400 kv Hipot Digital impulse measurement system with 1.4 MV seven stage generator; 10 kj per stage Simultaneous/Digital Partial Discharge and RIV measurement equipment Enclosed test booth with segregated room for customer witness

7 OTC State-of-the-art Testing Facility

8 (OTCS) Toll Free Local Fax (FAX) 1776 Constitution Avenue Louisville, Ohio