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TECHNICAL SPECIFICATION Rev. 1 – 27 May 2009 Issued: M. Canovas Margarit

X-VOLT RHZ1-OL 18/30 kV AL

Approved: F. Díaz 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 Ø Halogen free: according EN 50267 / IEC 60754 HCl content < 0,5 % pH > 4,3 conductivity < 10 µS/mm.

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TECHNICAL SPECIFICATION Rev. 1 – 27 May 2009 Issued: M. Canovas Margarit

X-VOLT RHZ1-OL 18/30 kV AL

Approved: F. Díaz 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 semiconducting 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.

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TECHNICAL SPECIFICATION Rev. 1 – 27 May 2009 Issued: M. Canovas Margarit

X-VOLT RHZ1-OL 18/30 kV AL

Approved: F. Díaz 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 ºK·m/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).

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TECHNICAL SPECIFICATION Rev. 1 – 27 May 2009 Issued: M. Canovas Margarit Approved: F. Díaz Rubio

X-VOLT RHZ1-OL 18/30 kV AL X

C

Open air

Ω/km

µF/km

A

Buried installation 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

Cross-section mm

2

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 40°C. Air Temp. (ºC) Factor

20

25

30

35

40

45

50

55

60

1,18

1,14

1,10

1,05

1

0,95

0,89

0,84

0,77

Table 3

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TECHNICAL SPECIFICATION Rev. 1 – 27 May 2009 Issued: M. Canovas Margarit Approved: F. Díaz Rubio

X-VOLT RHZ1-OL 18/30 kV AL Correction factors for ground temperatures other than 25°C. Ground T. (ºC) Factor

10

15

20

25

30

35

40

45

50

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 °K·m/W (calculated for 240 mm2 cable). Very damp

Slightly damp

Slightly dry

Dry

Very dry

Very dry

Thermal resist. (ºK·m/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

Moisture degree of soil

Table 5

7. Dimensions Table 6 show diameters and weight detailed for every cable. Cross-section mm

2

Outer Ø

Weight

mm

1 x 50

35,5

kg/km 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

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