~\NG

&~~*~\C)'b

* YEf\\'V

PRODUCTINFORMATIONDATASHEET

ContinuouslyTransposedCables(aC)

Typical Applications. OilFilledPower Transformers. HVDCTransformers. Reactors

Market Leader inCovered

Conductors

Product Description (CTC)

ContinuouslyTransposed Cables (CTC) is a special magnetic wire which is made up of multiple strandedrectangular copper conductors, which is individually enameled, transposed continuously, and insulated bycovering itwith a paper tape.

Advantages o' using ac in Transformer design. Lower costs due to reduction in material used. Reduced winding time thereby increasing

productivity for transformer manufacturers. Deliver greater electric efficiency by minimizing

load losses. Improved cooling of the conductor due to the

improved heat dissipation. Improving mechanical strength of the windings

due to the composite construction of thetransposed conductors

. Transformer size becomes smaller therebyreducing the overall cost of the transformer

Paper Insulation

Production Scope ( Enamelled)

Individual Enameled Strands with Polyvinyl Acetal Enamel (PVA 1200 C) + Bondable Epoxy Resin

** PVA Enamel and epoxy make: Dupont, Altana, Showa*** KSH uses Movable dies for coating the strands

Epoxy is a thermosetting resin. Enamelled wires arecovered by a thin layer of epoxy tack. Epoxy system ischaracterized by the following properties.. Uniform melting. High grade curing. Stability of B-stage (more than 6 months at 32°C). Suitable for the insulation system of oil transformers

Benefits of Epoxycoating. Reductionof risksof shorts. Exceptionally strong bond strength in the winding. Epoxy resin cure in the same thermal treatment for

drying paper (100-120°C). Betterinsulationof eachsinglestrip. Conductors in the winding become like a solid

beam and can withstand strong electrodynamicstresses created during short circuits

. Small thickness of coating needed in order toachieve very strong bonding (0.02-0.05mm)

. Improvesthewindabilityof theCTC

. No-pollution, because the B-stage resin does notcontain residue of harmful solvents

Designation Type of EnamelIncrease in

GradeDimensions (mm)

PVA- POLY VINYL Polyvinyl formal resins 1 0.10:!:0.02ACETAL 2 0.14:!:0.03

PVA - POLY VINYL Polyvinylformal + B stage epoxy resins 1 0.17:!: 0.03ACETAL + Epoxy 2 0.19:!: 0.03

Dual Coat 200 Polyesterimide + polyamide imide resins1 0.11 :!:0.022 0.14:!:0.03

Enamelling Line Transposing Head

."

..

IiII

Production Scope ( CTC)

Number of StrandsWidth of Individual StrandsThickness of individual StrandsPaper Insulation IncreasePitch

-5-47-3 mm -12.5 mm-1.1 mm-3.2mm .-Maximum 24 layers i.e. 3.60 mm-min 50 mm max 200 mm

Hard Copper (Controlled Proof Stress) can be produced according to BS 1432 ( CPR RpO.1% designation or~pO.2%).

Insulation Options of CYC

. KraftPaper

. ThermallyUpgradedPaper

. 22 HCC Dennison

. Nomex@

. Special Papers as percustomer requirements

Paper Makes. Wiedmann - USA. Munjsko - Sweden. Amotfors Brukab - Sweden. Dupont - USA. Pucaro - Germany

Other Options. CTC with short pitches thereby

increasing flexibility and wind abilityof cable

. Inter-column separator can beprovided

. Returnable Reels

Dust Free Manufacturing Facility Quality Department

I

Controlled proof Rp ( 0.2% ) MPa Controlled proof stress copper Rp ( 0.2% ) MPastress copper IS 1432

Annealed 60 - 100 CPR1 140 -200

CPR-A 90 - 120 CPR2 170 -220

CPR-B 120 - 150 CPR3 220 - 260

Testing

Our QC Laboratory is equipped with all required test facilities for testing. Mechanical Properties. Electrical Properties. Thermal Properties.Chemical Properties

Reference Specifications

IEC, DIN, IS,other relevant National/International/Customized standards CTC constructions can be madeaccording to customers specifications inorder to improve particular performances required for the winding.

Production Scope (Packing)

KSHStandard Reel sizes ( Returnable Reels)

**Flange thickness 50mm

D1

-..-..-----.----..-..------ ..-..-.--------..-..I

--- I I

~--- ---~-- ,.tD4

':-:-=::=::=:~-:'-;'~

IT: -~-

-- - " '" .'--' .'

" "'-/---,--- t--7 i "-~--+_:: .:=:=r~:-:-= ~.-.~.','~ --G& ~\

.. wu! ; ~---

~--- \

II

_., ,-_'_'=-\ ~,-, '- : ,/

::=::~=::=::=:'~~::~~ :-' --" ,,'II

..-------..-..------------ ..-------------..--.

14B2B1

~, ,~

** Drum sizes shown are as per standard.Other sizes as per requirement can beprovided

1m'!-------~-- - -.. --- -. -- --- ---- ---- - ..- -- -~-- -.- -

=- ISH INTERNATIONALPRIVATELIMITED- ------ Head Office: Gat No.: 11/1/2A and 11/2, Chakan-Ambethan Road, Chakan, Pune 410 501Maharashtra, India. Tel.: ++91-2135-256410/12 Telefax: ++ 91-2135-256411E-mail: sales_chakan@kshinternational.com.kshintl@vsnl.comWeb: www.kshinternational.com <0

~a.'"~'"

D1 D2 D3 'b4 'bs 81 82 Reel FillFlange Core Bore Driving Distance of Total Total Tare

weightmm mm mm Hole driving hole Outer Inner Weight Appr. Kgmm mm Width Width Appr. Kgmm mm

1600 1000 82 55 d.560 630 530 180 25001400 900 82 55 560 630 530 140 1500, ..1250 900 82 ..d"d.b5 560 630 530 120 1300..m. .m'd