On-Site Services for Planned & Unplanned Outages
A team effort is at the heart of a successful project. Our Generator Services Group becomes an integral part or your team!
National Electric Coil's Field Service can be instrumental in the successful completion of a planned or unplanned outage. Whether an on-site installation or other generator field work, returning your unit/s to service as soon as possible is our ultimate goal. NEC's Field Service utilizes proprietary installation methods and techniques developed out of our long-term experience with all makes and sizes of machines and working under various site conditions. Our Field Service supervisors and senior staff bring years of experience to our crews. Many also have worked for the various OEMs at some point in their careers.
Installation of our stator windings, stator cores and hydro field pole windings by NEC's Generator Services Group or an Generator Service Partner (GSP) insures they will perform as designed. Care is taken to assure that the windings and laminations arrive complete and ready-to-install at your site.
Our trained and certified installation crews set up at your site with the
assistance mobile workshops and storage units for tools,
tooling, test equipment, materials management, portable machining and carpentry.
With these resources, work platforms and protection against contamination
deemed by site conditions can easily be erected. Additionally, NEC's
Health, Environmental & Safety (HES), Logistics,
and Quality Assurance teams work with the owners representatives to
assure that our on-site workforce meets all the owner's requirements training and certifications,
and is fully-stocked and -supported.
When a stator is rewound, core repairs are an expected and routine part of
the preparation of the core for reuse in a stator rewind. Some problems
are obvious upon visual inspection, once the core is stripped and cleaned.
Depending on the damage, some repairs may require high-speed mechanical
milling and/or electrochemical machining. A Core Loop test or an EL Cid may also be
required to confirm the overall viability of core. In hydros, issues with the frame,
core splits, finger plates may become more obvious and require modifications.
With the right experience, equipment and personnel these repairs are a
standard part of our pre-rewind preparation of the unit. Generally, the need for a full core restack will be known well-ahead of the outage
and already have been included in the project specification and schedule.
For these projects, NEC's ability to arrive at the site with the right tools,
tooling and proven engineering design, technical support and procedures for removal and restack of laminations,
can offer customers savings in both time, schedule and budget.Stator Core Repairs & Replacements
