Product/Service

Superflex

Source: National Electric Coil
These coils are particularly suitable for replacement windings in small bore machines with slots that cannot accomodate conventional multi-turn roebel bars
"You ought to be calling this coil
Superflex,"

said one winder, after seeing how easily these coils slipped into the slots of a two-pole high voltage machine. Ease of installation was what National Electric Coil engineers had in mind when they designed the Neccoflex-E. But they also wanted to offer customers the advantages of the higher dielectric strength of mica splittings insulation and the benefits of epoxy resins — durability and impermeability — for machines running in challenging operating conditions. We succeeded with NECCOFLEX-E.

These coils are particularly suitable for replacement windings in small bore machines with slots that cannot accomodate conventional multi-turn roebel bars. (This usually occurs when the original winding is four or more turns per coil, and the existing slot is too small for a new half bar with a comparable number of transpositions.) The typical alternative, spliced diamond coils manufactured as "half" coils, requires time, skill and extreme care. Once the coils are in the slots, individual strands must be brazed at the knuckle of each end turn on each end of the machine. With the Neccoflex-E, the machine is wound as it would be with conventional diamond-shaped coils — this coil exceeds the flexibility needed to wind most small bore machines.

With the strength and durability and now, the FLEXIBILITY of the Neccoflex-E, this coil is a super buy for owners and installers, both — LESS LABOR to install and LESS DOWN TIME for your customer's machine.

Basic Specifications:

  • Diamond-shaped multi-turn coil
  • Silver bearing copper wire
  • Class F Insulation System
    • Dacron glass strand insulation
    • Mica splittings in turn and ground insulation
    • Epoxy resin binder
  • Rated for use in machines 6,900 V and above

Basic Product Characteristics:
  • Cell portion of coil fully cured in factory
  • End turns flexible to 90° on center

Installation
  • Standard installation for diamond coils
  • Final coat of epoxy resin applied to end turns, ties and bindings
  • End turns cured after installation, in field or in shop, in a controlled atmosphere

National Electric Coil, 800 King Avenue P.O. Box 370, Columbus, OH 43216. Tel: 614-488-1151; Fax: 614-488-8892.