BARE OVERHEAD CONDUCTORS

An important role is played by overhead conductors, for which we spend the maximum effort in research and collaboration with our customers, to be able to supply customized and high quality products.

Our two plants, in Italy and France, serve both the European and Mediterranean markets.

A dedicated workforce using the latest generation equipment andtechnology: 250Total annual production capacity for overhead and catenary wires: 28000 TonsCombined covered area: 45000 m²Combined area: 95000 m²

De Angeli Prodotti aspires to be the manufacturing leader - in terms of quality and

innovation - of both insulated and enameled wires for electromechanical applications and

overhead power line conductors.

BAREOVERHEAD

CONDUCTORS

MISSION

Our equipment is composed of :5 extrusion machines9 drawing machines7 tubular stranding machines4 annealing equipment2 rigid stranding machines2 planetary stranding machines7 quenching furnaces5 rewinding lines for conductors2 coil lines

Production range:Aluminum alloy wires: B 0.16 - 14.00 mmStrand conductors: section 10 - 1900 mm²Number of wires: 3 -150 Catenary - contact wires: 80 - 150 mm²

Packaging:We offer a wide range of lengths and packing types, both on coils and drums.

With our facilities we are able to cover all the production chain, starting from aluminum, alloy and copper wire rod to finished single strand and flat wires.

FACTORIES

The constant increase of population density and electric energy consumption requires continuous

transport capacity increase. Building new lines is often very difficult due to lack of available lands

and environmental concerns, especially in the developed countries.

The high thermal limit (HTL) conductors for overhead lines are proposed specially to solve this problem, allowing an upgrade of the existing line

increasing the ampacity from 1.5 to 2 times by replacing only the conductors,

so saving time and money.The use of innovative technologies allows to have

conductors with mechanical and dimensional characteristics similar to standard ACSR or AAAC but

without any decline if exposed to high working temperatures. Another special feature of high

thermal limit conductors is the lower thermal expansion coefficient that allows the reducing of

the sag increase at high temperatures.

SAG

CONVENTIONAL@75°C

HIGHT THERMALLIMIT @150-210°C

Sagclearance

14

13

12

11

10

9

8

70 50 100 150 200 250

Temperature (°C)

Sag

(m)

ACSR/AAAC

ACSS/Sheat-type

ZTACIR

GZTACSR

CONVENTIONAL HIGH THERMAL LIMIT

The main types of high thermal limit conductors technologies are: ● Invar (ZTACIR)● Gap-type (GZTACSR)● Steel supported (ACSS)● Sheat-type

De Angeli produces all these type of conductors, and can supply its design experience to help you to choose the best type for your needs.

Every project using HTL conductors requires a tailor-made approach. De Angeli Prodotti supports its clients to help them to find the best way to upgrade existing lines:● Design the appropriate conductor● Design all the necessary fittings ● Installation support● Design the line and supply the conductor models for PLS-CADD

SPECIALCONDUCTORS

INVAR CONDUCTORSThese conductors use a combination of Aluminium Clad Invar (a special Fe-Ni alloy with very low thermal expansion coefficient) for the core, and super thermal resistant Al-Zr alloy for the conductive layer. This allows:● Low conductor thermal expansion coefficient that limits the sag increase with the increase of the temperature● Have mechanical properties (diameter, strength, weight) very similar to ACSR conductors● Maintaining the mechanical strength of the conductor with continuous operating temperature up to 210°C

GAP-TYPE CONDUCTORSThese conductors have a special construction feature with a small gap filled with grease between the high strength steel core and the thermal resistant Al-Zr alloy conductive layers. This allows:● Tension the core and the external layer independently to have the knee-point at the installation temperature● Limiting the sag increase with the increase of the temperature by the thermal expansion coefficient above knee-point related to the steel core ● Maintaining the mechanical strength of the conductor with continuous operating temperature up to 210°C

STEEL SUPPORTED CONDUCTORSThese conductors consist of a high strength steel core with one or more layers of Annealed Aluminium wires (Al 1350-0). Steel core wires are protected from corrosion at high temperature by special zinc – 5% aluminum alloy coating. This allows:● The temperature related changes linked only to the steel core due to the low proof stress of the external layers, so limiting the sag increase with the increase of the temperature● The use of full strength steel wires● Continuous operating temperatures up to 200°C with no long term creep

SHEAT-TYPE CONDUCTORSDe Angeli Prodotti has developed a series of extremely compact conductors characterized by the complete lack of empty due to an high strength steel core covered by extrusion of a penetrating annealed Aluminium sheat. This allows:● The same current carrying capacity with lower diameters● The reduction of the wind pressure on the conductor● Low losses due to the high conductivity of Annealed Aluminium

● Easy installation, using the same installation method of standard ACSR conductors● High corrosion resistance of the core thanks to the use of ACI

Invar conductors are especially suitable to replace ACSR conductors in short and middle spans lengths in all the orographic conditions (plain, hill or mountains).

● Reduced cost due to no expensive materials being requiredInstallation method of GZTACSR is well but requires skilled specialists because at the time of sagging, a special sagging method is required to apply all the tension to the steel core only.

Gap-type conductors are particularly suitable to replace ACSR conductors in flat lands or in any case with small difference in level.

● Low losses due to the high conductivity of Annealed Aluminium● Mechanical properties compatible with AAAC and ACSR conductors● Reduced aeolian vibration due to low mechanical load on the Aluminium wires

ACSS conductors are suitable to replace AAAC and ACSR conductors in short, middle and long spans lengths in all the orographic conditions (plain, hill or mountains).

● Characteristic like ACSS with the thermal expansion coefficient linked to that of the steel core limiting the sag increase with the temperature● Continuous operating temperatures up to 200°C with no long term creep

Sheat-type conductors are especially suitable to replace small AAC, AAAC and ACSR conductors in short spans lengths.

TACSR

ZTACIR

ZTACIR

GZTACSR

GZTACSR

SHEAT-TYPE

SHEAT-TYPE

SPECIALCONDUCTORS

1400

1200

1000

800

600

400

200

0

Specific strength (II)

MPa

*dm

3 /kg

192120

470

1250

Steel Al alloy MMC CF

De Angeli Prodotti pays a lot of attention to innovation, and undertakes continuous research and develop to offer the most advanced technologies. The trends in this sector are the research of new materials and surface treatment to produce more lightweight conductors with the capability of increasing the ampacity and reducing the losses. The main projects are:

CARBON FIBERThe carbon fiber composite materials exhibit extraordinary mechanical and thermal properties along the direction of the fibers. They allow the same mechanical strength of the steel with a weight 5 times lower and a thermal expansion coefficient near to zero. The use of this type of materials for the core allows the production of conductors with unrivalled performance.

Material Density σR (//) Specific Elastic Thermal TMAX strength (//) modulus expansion (//)

kg/dm³ MPa MPa*dm³/kg GPa 10-6/°C °C

Steel 7,8 1500 192 (reference) 205 11,5 >300

Al alloy 2,7 325 120 (-37%) 65 23 80

Metal matrix Composite 3,4 1600 470 (+144%) 240 7 300

Carbon Fiber Composite 1,7÷1,8 2200 1250 (+550%) 150 <1 200

SURFACE EMISSIVITY TREATMENTSFrom the energy balance in a conductor carrying electric current, its temperature depends on the thermal energy (incoming from resistive losses and solar radiation) and the capacity to dissipate this energy. This can be done in two ways: by convection and by radiation. Unfortunately bare aluminium conductor have a poor emissivity coefficient, that limit the energy dissipation by radiation and increase the conductor temperature and consequently the resistivity.De Angeli Prodotti has developed a surface treatment by sand blasting to increase the emissivity of the conductors. This allows the increase of the current carrying capacity at a given temperature or on the other side the decrease of the temperature of the conductor at a given ampacity, especially with the high thermal limit conductors.The surface treatment is applicable to all the type of conductors, and does not effect the conductor strength or corrosion, resistance and will not flake in service or be easily damaged by normal handling, installation and line maintenance techniques.De Angeli Prodotti is also developing new surface treatments with better performance.

The carbon fiber composites are very sensitive to the environmental agents (moisture, oxygen, sunlight etc..), De Angeli Prodotti is developing special protection to ensure the long life of the conductor.

RESEARCH & DEVELOPMENT

ACCC/TW

TACSR (with treatments)

ZTACIR (with treatments)

De Angeli Prodotti has very considerable experience in manufacturing of all conventional conductors.

De Angeli Prodotti produce a full line of monometallic and bimetallic bare conductors which are used in overhead transmission and distribution line applications. We can offer various conductor designs to meet your application requirements. The most common and used conductors for overhead lines are:

CONVENTIONALCONDUCTORS

ALUMINIUM CLAD STEEL AND OPGWDe Angeli Prodotti can produce a full range of Aluminium Clad Steel (ACS) according to IEC 61232 with different values of conductivity which can be used for:● Ground wires● OPGW armouring● Conductor reinforcementsThe special features of the ACS allow high corrosion resistance and a good balance between strength and conductivity.

CATENARY LINES FOR RAILWAY APPLICATIONSDe Angeli Prodotti can supply many components for electric traction overhead lines:● Contact wire (trolley) according to EN 50149, Cu and CuAg alloy from 80 to 150mm²● Contact wire supports● Overhead conductors

CU

ACSR

ACS

AZALEE

OPGW

OPGW

OPGW

TROLLEY

Type of conductors Dimensional Range Normative

Cu Ø 4÷20mm ASTM B8-99, CEI 7.1, Sec. 10÷240mm² DIN 48201, BS 125

AAC Ø 5÷41mm IEC 61089, EN 50182, ASTM B231, Sec. 15÷1000mm² CEI 7.2, DIN 48201, BS 215

AAAC Ø 5÷52mm IEC 61089, EN 50182-50183, ASTM B399, Sec. 15÷1600mm² CEI 7.2, DIN 48201, BS 3242

EHC Ø 5÷52mm IEC 61089, EN 50182-50183, ASTM B399, (extra high conductivity Sec. 15÷1000mm² CEI 7.2, DIN 48201, BS 3242 conductors)

ACSR Ø 5÷56mm IEC 61089, EN 50182, ASTM B232, Sec. 15÷1900mm² CEI 7.2, DIN 48204, BS-215.

CEE – Azalee® Ø 5÷40mm IEC 62219, EN 62219, ASTM B779 (energy conservation Sec. 15÷1000mm² conductors)

DE ANGELI PRODOTTI S.p.A.Viale dell’Industria, 1

35023 Bagnoli di Sopra - Padova - Italytel 0039 049 9599111 - fax 0039 049 5380673

sales@deangeliprodotti.com

T.C.H. DE ANGELI40, bd Jules-Durand - B.P. 5072

76071 La Havre Cedex - Francetel 0033 (0) 235534999 - fax 0033 (0) 235530867

tch.de.angeli@wanadoo.fr

www.deangeliprodotti.com

ww

w.p

hoen

ixim

age.

net

OC

- 04

- 201

0