Continuously Transposed Conductors

CTC is a bundle of winding wire consisiting of a number of enameled rectangular wires(5-63 strands).

CTC provides a ready-insulated and tightly packed array of conductors for building transformer coils which are suitable for use in the manufacturing of medium and ultra-high power transformers and reactors.

Advantages

  · Shortened winding time for the core of transformer

  · Decreased size and weight of the transformer and reduce the cost

  · Reduced eddy and circulating current losses    

  · Excellent coil performance and simplified winding processing

  · Improved mechanical strength of winding ( Hardened self-bonding CTC)

Production Range

  · Number of strands         5 - 87

  · Width of strand           3.0 - 14.0mm

  · Thickness of strand        1.1 - 3.0mm

Type of insulation For CTC

  Kraft paper

  Insulating paper Up to 500KV Power (with high density)

  Thermally Upgraded Paper

  Crepe Paper (High Tension Paper)

  22HCC Dennison Paper

  Paper with bonding layer

  Polyester film (PET)

  Nomex

  Polyester cord

  Non-woven cloth

Enamel type available

Code	Type of Enamel	Temperature Class	Application Range
PVF	1720-20 Polyvinyl formal	120	Oil filled transformer
PEW EIW	Modified Polyester, Polyester-imide	F ( 155 ) H (180 )	Gas, Dry & Traction Transformer
PE - AIW	Polyester overcoated with Polyamid-imide	F (180 ) C (200 )	Gas, Dry & Traction Transformer
EIW	Polyester-imide	H ( 180 )	Gas, Dry & Traction Transformer
PET	Polyester -film	H (130 )	Gas, Dry & Traction Transformer

Drum Size (CTC)

(Steel and Wood or Wood plate structure)

Size mm	D1 Flange		D2 Core		D3 Bore		L2 outer width		L1 Inner width		Drum Weight Kg	Drum Capacity Kg
	Size mm	Tolerance mm	Size Mm	Tolerance mm	Size mm	Tolerance mm	Size mm	Tolerance mm	Size mm	Tolerance Mm
900	900	±5	600	±5	105	+2	385	±5	285	±5	42	390
1000	1000	±5	637	±5	105	+2	450	±5	350	±5	45	740
1350	1350	±5	1000	±12	105	+2	580	±8	428	±8	125	1000
1600	1600	±8	1100	±12	105	+2	680	±8	500	±8	194	2000
1800	1800	±10	1300	±12	105	+2	1000	±10	820	±10	280	3500
1800	1800	±10	1300	±12	105	+2	1300	±10	1120	±10	300	4600

Continuously Transposed Conductors