National Electric Coil (NEC) products

  Because predecessor OEM "legacy" designs often take a back seat to the "current" OEM`s designs, NEC has found a niche in serving this market. NEC design engineers have a diversity of knowledge and experience that gives our design team a wide-ranging base of experience with generating units of all ages, makes, sizes and types, including unit models that are no longer actively manufactured. Along with the winding design, our engineers address related issues of unit reliability, efficiency, maintainability and longevity. By comprehensively addressing the total machine, old units can become newly valuable as functioning assets for the generation of electricity.

 At our Columbus Rotating Equipment Service Center, we have made a significant investment in design, equipment and process development for our turbogenerator rotor winding manufacturing line. This includes the achievement of ISO 9001:2008 certification for our quality management systems. NEC manufactures windings with either style of end winding corners — square or edge-bent as shown above. Typically, old windings are replaced with new ones of similar design. All brazed joints, whether in the corners or in the arch, are UT tested to prove their durability.