X-VOLT RHZ1-OL 18/30 kV AL

1 of 5

TECHNICAL SPECIFICATION

Rev. 1 27 May 2009

Issued: M. Canovas Margarit Approved: F. Daz Rubio

1. Object This document defines the design and manufacturing characteristics of the cables type RHZ1-OL 18/30 kV Al+H16 manufactured by Top Cable. 2. Design This type of cables is designed, manufactured and tested according to UNE-HD 620-5E1 and IEC 60502-2. 3. Applications Cables for fixed installations. Suitable for transport and distribution of electric power in medium voltage networks. Halogen free. These cables are suitable for indoor, outdoor and buried installations. 4. Characteristics

Nominal voltage: 18/30 (36) kV

Minimum service temperature: -15 C

Maximum conductor temperature: 90 C

Maximum short-circuit temperature: 250 C (maximum 5 s)

Minimum bending radius: 15 x cable

Halogen free: according EN 50267 / IEC 60754

HCl content < 0,5 %

pH > 4,3

conductivity < 10 S/mm.

X-VOLT RHZ1-OL 18/30 kV AL

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TECHNICAL SPECIFICATION

Rev. 1 27 May 2009

Issued: M. Canovas Margarit Approved: F. Daz Rubio

5. General make-up of the cable 5.1 Conductor Electrolytic annealed aluminium conductor, class 2 according to EN 60228 / IEC 60228. Optionally, hygroscopic tapes can be applied in order to achieve longitudinal watertightness on the conductor (cable type -2OL) 5.2 Inner semi-conducting screen Cross-linked semiconductor screen applied over conductor in a triple-extrussion process. 5.3 Insulation Cross-linked polyethylene insulation, type DIX-3 according to HD 620-1 and type XLPE according to IEC 60502-2; natural color. Cross-linked in catenary line with nitrogen atmosphere. 5.4 Outer semi-conducting screen Cross-linked semiconductor screen applied over insulation in a triple-extrussion process. Strippable. Optionally, under customer request, it can supplied non strippable (bonded to insulation). 5.5 Metalic screen Metalic screen made with Cu wires and Cu binder tape, applied over the outer semi-conducting layer. With 16 mm2 minimum cross-section. 5.6 Water blocking Hygroscopic tape applied over metalic screen. 5.7 Outer sheath Polyolefine outer sheath, type DMZ1 according to HD 620-1 and type ST7 according to IEC 60502-2; red color.

X-VOLT RHZ1-OL 18/30 kV AL

3 of 5

TECHNICAL SPECIFICATION

Rev. 1 27 May 2009

Issued: M. Canovas Margarit Approved: F. Daz Rubio

5.8 Diagram representation

6. Current-carrying capacities 6.1 Nominal current-carrying capacities Table 1 show the current-carrying capacities and electric parameters detailed for every cable. Current-carrying capacities, in ampers, are calculated according to UNE 211435 and for the following conditions:

- Open air installation: three single-core cables in trefoil formation and ambient temperature of 40 C; protected from direct sun radiation and with adequate ventilation (supported by cleats and hangers or on perforated tray).

- Buried installation: three single-core cables in trefoil formation direct buried at a depth of

1 m, ground temperature of 25 C and soil thermal resistivity of 1,5 Km/W. - In all cases it is supossed a three-phase circuit.

Reactance (X) is calculated at 50 Hz and for three single-core cables (in triangle or trefoil formation). For conditions other than this apply the adequate correction factors (point 6.3).

X-VOLT RHZ1-OL 18/30 kV AL

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TECHNICAL SPECIFICATION

Rev. 1 27 May 2009

Issued: M. Canovas Margarit Approved: F. Daz Rubio

Cross-section X C Open air Buried installation mm2 /km F/km A A

1 x 50 0,148 0,134 170 140

1 x 70 0,141 0,147 210 170

1 x 95 0,135 0,160 255 205

1 x 120 0,130 0,171 295 235

1 x 150 0,126 0,183 335 260

1 x 185 0,122 0,197 385 295

1 x 240 0,116 0,217 455 345

1 x 300 0,112 0,236 520 390

1 x 400 0,107 0,262 610 445

1 x 500 0,102 0,292 720 510

1 x 630 0,097 0,333 840 580

Table 1

6.2 Short-circuit current-carrying capacities The maximum short-circuit current that a cable can withstand depend on the time of reaction of the protection elements installed in the line (calculated for 240 mm2 cable).

Time (s) 0,2 0,5 1 2

A 51.100 32.500 23.100 16.450

Table 2

6.3 Correction factors The current-carrying capacities must be multiplied with the adequate correction factor when the installation conditions differs from point 6.1 Correction factors for air temperatures other than 40C.

Air Temp. (C) 20 25 30 35 40 45 50 55 60

Factor 1,18 1,14 1,10 1,05 1 0,95 0,89 0,84 0,77

Table 3

X-VOLT RHZ1-OL 18/30 kV AL

5 of 5

TECHNICAL SPECIFICATION

Rev. 1 27 May 2009

Issued: M. Canovas Margarit Approved: F. Daz Rubio

Correction factors for ground temperatures other than 25C.

Ground T. (C) 10 15 20 25 30 35 40 45 50

Factor 1,11 1,07 1,04 1 0,96 0,92 0,88 0,83 0,78

Table 4

Correction factors for soil thermal resistivity, that depend of damp, other than 1,5 Km/W (calculated for 240 mm2 cable). Moisture degree of soil Very damp

Slightly damp

Slightly dry Dry Very dry Very dry

Thermal resist. (Km/W) 0,8 1,0 1,5 2,0 2,5 3,0

Factor 1,29 1,18 1 0,88 0,80 0,73

Table 5

7. Dimensions Table 6 show diameters and weight detailed for every cable.

Cross-section Outer Weight

mm2 mm kg/km

1 x 50 35,5 1100

1 x 70 36,5 1190

1 x 95 37,9 1290

1 x 120 39,0 1400

1 x 150 40,4 1520

1 x 185 41,9 1680

1 x 240 44,4 1920

1 x 300 46,7 2170

1 x 400 49,5 2630

1 x 500 54,4 2995

1 x 630 58,1 3580

Table 6