TAXONOMY: MAT_CTC
Continuously Transposed Conductors (CTC)
Enamelled, Epoxy-Bonded & Thermally Upgraded Copper CTC for Power Transformers
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Technical Baseline & Specification Parameters
| Conductor Material | Oxygen-Free High Conductivity Copper (Cu-OF / Cu-ETP ≥ 99.99%) |
|---|---|
| Number of Strands | 5 to 83 rectangular enamelled strands |
| Enamel Coating | Polyvinyl Formal (PVF/Formvar) or Polyesterimide + Polyamideimide (Theic) |
| Bonding Layer | Epoxy resin coated (cures during drying to withstand short-circuit radial forces) |
| Paper Wrapping | Pure kraft paper, thermally upgraded paper, or aramid (Nomex) |
Subcategories & Engineering Architectures
Standard Kraft Paper CTC
Individual enamelled strips continuously transposed to minimize eddy-current circulation losses in high-current windings.
Epoxy-Bonded CTC
Special thermo-setting adhesive bond curing during vacuum vapor-phase heating into an exceptionally rigid beam.
Netless CTC
Direct strand interlock without internal polyester mesh to maximize copper packing factor.
High-Temperature Aramid CTC
Insulated with DuPont Nomex for hybrid dry-type and high-overload traction transformers.
Verified Global Suppliers & Manufacturers (4)
Verified suppliers with independent factory documentation, technical capability certifications, and direct quotation channels.
| Company & Location | Capabilities & Product Lines | Status | Action |
|---|---|---|---|
|
ASTA Energy Transmission Oed, Austria |
World-leading CTC and insulated copper conductors for energy transmission | ✓ Verified | Website ↗ · RFQ |
|
Samdong Seoul, South Korea |
Continuously transposed cables and oxygen-free high conductivity copper | ✓ Verified | Website ↗ · RFQ |
|
Synflex Group Blomberg, Germany |
CTC conductors, winding wires, and insulating wrapping tapes | ✓ Verified | Website ↗ · RFQ |
|
Lee Vedla Industrial Corporation Bhopal, India |
Pressboard / insulation materials, CRGO (core steel), Copper / CTC conductors, Transformer oil / ester fluids | ✓ Verified | Website ↗ · RFQ |