Continuously
Transposed Cable

Used for medium and ultra-high power transformers in electrical equipment, Transmission and distribution centers, Military and defense etc.
  • Global delivery as fast as 10 days
  • Has factory stock, free sample
  • Paper CTC Conductor, CTC wire without paper
  • wooden spool or Metal reel
  • About 2500kg - 3500kg per roll
  • ISO 9001:2020, UL certificate
Home » Continuously Transposed Cable

What is Continuously Transposed Cable?

Continuously transposed Cable is made of a certain number of enameled flat wires arranged in two columns in sequence by special technology, and wrapped by special insulating materials( insulation paper, rope or tape). It consists of a group of enameled rectangular wires, usually with PVF (polyvinylformal) enamel, which are transposed to create a kind of rectangular strand. In the CTC, each elementary conductor consecutively and repeatedly assumes every possible position inside the cable. The bundle of strips can be wrapped and insulated with tapes, generally in pure cellulose paper. CTC configurations come in different lengths to best suit the diameter of transformer windings for different applications and they may also contain between five and 73 wire strands. The finished product is used in power transformers as winding wires. CTC Conductor is mainly used in medium and ultra-high power transformers in electrical equipment. (large-scale oil-immersed power transformers, reactors and large-capacity dry type transformers. )

transposed cable aluminum
transposed cable copper

Continuously Transposed Cable - Advanatges

1. Cost-effectiveness. CTCs can be used with small, less-expensive transformers to reduce the overall cost of the system. The thin insulation helps reduce the space demand for the windings.
2. Ease of use. CTCs have improved winding capabilities. They are also simple for operators and machinery to handle.
3. Reduce electrical loss. CTCs reduce the electrical losses that transformers suffer. They offer faster winding for shortened winding times. CTC windings also help reduce eddy current losses at the end of the winding.
4. Even distribution of heat. Electrical equipment often generates high levels of heat that may damage surrounding components or diminish overall performance. The insulation and spacing improvements that CTCs offer ensures that this heat is evenly distributed across the winding.
5. Improved mechanical strength. CTCs—especially self-bonding CTC types—offer better mechanical strength than alternative materials.

Continuously Transposed Cable

Continuously Transposed Conductor Specifications

Transposition number 5 – 80 (odd or even optional)
Maximum dimension height 120 mm, width 26 mm (tolerance ± 0.05 mm)
Single conductor size thickness a: 0.90 – 3.15 mm, width B: 2.50 – 13.00 mm (tolerance ± 0.01 mm)
The recommended width thickness ratio of a single conductor 2.0 < B / a < 9.0
The recommended coating thickness of enameled wire 0.08-0.12mm
The thickness of adhesive layer 0.03-0.05mm
Continuously Transposed Cable