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Technical Reference

Insulation Options :

  • Either PVC, XLPE or EPR can be offered upon request.

Insulation Thickness :

  • Nominal thickness of PVC/A insulation
  • Nominal cross-sectional area of conductor Nominal thickness of insulation at rated voltage U0/U (Um)
    mm2 0.6/1 (1.2) kV mm 1.8/3 (3.6) kV mm
    1.5 and 2.5 0.8 -
    4 and 6 1.0 -
    10 and 16 1.0 2.2
    25 and 35 1.2 2.2
    50 and 70 1.4 2.2
    95 and 120 1.6 2.2
    150 1.8 2.2
    185 2.0 2.2
    240 2.2 2.2
    300 2.4 2.4
    400 2.6 2.6
    500 to 800 2.8 2.8
    1 000 3.0 3.0
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  • Nominal thickness of cross-linked polyethylene (XLPE) insulation
  • Nominal cross-sectional area of conductor Nominal thickness of insulation at rated voltage U0/U (Um)
    mm2 0.6/1 (1.2) kV mm 1.8/3 (3.6) kV mm
    1.5 and 2.5 0.7 -
    4 and 6 0.7 -
    10 and 16 0.7 2.0
    25 and 35 0.9 2.0
    50 1.0 2.0
    70 and 95 1.1 2.0
    120 1.2 2.0
    150 1.4 2.0
    185 1.6 2.0
    240 1.7 2.0
    300 1.8 2.0
    400 2.0 2.0
    500 2.2 2.2
    630 2.4 2.4
    800 2.6 2.6
    1 000 2.8 2.8
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  • Nominal thickness of ethylene propylene rubber (EPR) and hard ethylene propylene rubber (HEPR) insulation
  • Nominal cross-sectional area of conductor Nominal thickness of insulation at rated voltage U0/U (Um)
    mm2 0,6/1 (1,2) kV 1.8/3 (3.6) kV
    ERP mm HEPR mm ERP mm HEPR mm
    1.5 and 2.5 1.0 0.7 - -
    4 and 6 1.0 0.7 - -
    10 and 16 1.0 0.7 2.2 2.0
    25 and 35 1.2 0.9 2.2 2.0
    50 1.4 1.0 2.2 2.0
    70 1.4 1.1 2.2 2.0
    95 1.6 1.1 2.4 2.0
    120 1.6 1.2 2.4 2.0
    150 1.8 1.4 2.4 2.0
    185 2.0 1.6 2.4 2.0
    240 2.2 1.7 2.4 2.0
    300 2.4 1.8 2.4 2.0
    400 2.6 2.0 2.6 2.0
    500 2.8 2.2 2.8 2.2
    630 2.8 2.4 2.8 2.4
    800 2.8 2.6 2.8 2.6
    1 000 3.0 2.8 3.0 2.8

Mechanical Characteristics of Insulation Materials :

  • Mechanical characteristics of insulating compounds with copper conductor (before and after aging)
  • Designation ofcompounds Unit PVC/A EPR HEPR XLPE
        0,6/1(1,2) kv cables All other cables 0,6/1(1,2) kv cables All other cables 0,6/1(1,2) kv cables All other cables
    Maximum conductor temperature in normaloperation °C 70 90 90 90 90 90 90
    Without ageing (IEC 60811-1-1,) Tensile strength, minimum N/mm2 12,5 4,2 4,2 8,5 8,5 12,5 12,5
    Elongation-at-break,minimum % 150 200 200 200 200 200 200
    After ageing withoutconductor Treatment: – temperature °C 100 135 135 135 135 135 135
    – tolerance °C ±2 ±3 ±3 ±3 ±3 ±3 ±3
    – duration h 168 168 168 168 168 168 168
    Tensile strength a) value after ageing,min N/mm2 12,5 – – – – – –
    b) variation a, max % ±25 ±30 ±30 ±30 ±30 ±25 ±25
    Elongation-at-break: a) value after ageing, minimum % 150 – – – – – –
    b) variation a, maximum % ±25 ±30 ±30 ±30 ±30 ±25 ±25
    After ageing withcopper conductorfollowed by the tensiletest b Treatment: – temperature °C – 135 – 135 – 135 –
    – tolerance °C – ±3 – ±3 – ±3 –
    – duration h – 168 – 168 – 168 –
    Tensile strength: Variation a, maximum % – ±30 – ±30 – ±30 –
    Elongation-at-break: Variation a, maximum % – ±30 – ±30 – ±30 –
    After ageing withcopper conductorfollowed by bendingtest (only if thetensile test is not practicable) bTreatment: – temperature °C – 150 – 150 – 150 –
    – tolerance °C – ±3 – ±3 – ±3 –
    – duration h – 240 – 240 – 240 –
    Results to be obtained   – No cracks – No cracks – No cracks –

Mechanical Characteristics of Jacket Materials:

  • Mechanical characteristics of sheathing compounds (before and after aging) 
  • Designation of compounds Unit ST1 ST2 ST3 ST7 ST8 SE1
    Maximum conductor temperature in normal operation °C 80 90 80 90 90 85
    Without ageing (IEC 60811-1-1) Tensile strength, minimum N/mm2 12,5 12,5 10,0 12,5 9,0 10,0
    Elongation-at-break, minimum % 150 150 300 300 125 300
    After ageing in an air oven(IEC 60811-1-2) Treatment: – temperature (tolerance ±2 °C) °C 100 100 100 110 100 100
    – duration h 168 168 240 240 168 168
    Tensile strength: a) value after ageing, minimum N/mm2 12,5 12,5 – – 9,0 –
    b) variation a, maximum % ±25 ±25 – – ±40 ±30
    Elongation-at-break: a) value after ageing, minimum % 150 150 300 300 100 250
    b) variation a, maximum % ±25 ±25 – – ±40 ±40
  •  
  • Mechanical characteristics for PVC sheathing compounds
  • Designation of compound Unit ST1 ST2
    Use of the PVC compound   Sheath
    Loss of mass in an air oven (IEC 60811-3-2) Treatment: – temperature (tolerance ±2 °C) °C – 100
    – duration h – 168
    Maximum loss of mass g/cm2 – 1,5
    Pressure test at high temperature(IEC 60811-3-1) - temperature (tolerance ±2 °C) °C 80 90
    Behaviour at low temperature a (IEC 60811-1-4) Test to be carried out without previous ageing: -cold bending test for diameter <12,5 mm
    - temperature (tolerance ±2 °C)    		 °C –15 –15
    Cold elongation test on dumb-bells: -temperature (tolerance ±2 °C) °C –15 –15
    Cold impact test: -temperature (tolerance ±2 °C) °C –15 –15
    Heat shock test (IEC 60811-3-1) Treatment: – temperature (tolerance ±3 °C) °C 150 150
    – duration h 1 1
  •  
  • Mechanical characteristics of thermoplastic PE sheathing compounds
  • Designation of compounds Unit ST3 ST7
    Density (IEC 60811-1-3)    
    Carbon black content (for black oversheaths only)(IEC 60811-4-1) Nominal value % 2,5 2,5
    Tolerance % ±0,5 ±0,5
    Shrinkage test (IEC 60811-1-3) Treatment: – temperature (tolerance ±2 °C) °C 80 80
    – heating, duration h 5 5
    – heating, cycles   5 5
    Maximum shrinkage % 3 3
    Pressure test at high temperature (IEC 60811-3-1) – temperature (tolerance ±2 °C) °C – 110
  •  
  • Mechanical characteristics of halogen free sheathing compound
  • Designation of compound Unit ST8
    Behaviour at low temperature a (IEC 60811-1-4) Test to be carried out without previous ageing: – cold bending test for diameter <12,5 mm  
    – temperature (tolerance ±2 °C) °C -15
    Cold elongation test on dumb-bells: – temperature (tolerance ±2 °C) °C -15
    Cold impact test: – temperature (tolerance ±2 °C) °C -15
    Pressure test at high temperature (IEC 60811-3-1) – temperature (tolerance ±2 °C) °C 80
    Water absorption (IEC 60811-1-3)Gravimetric method:    
    Treatment: – temperature (tolerance ±2 °C) °C 70
    – duration h 24
    Maximum increase of mass   g/cm2 10
  •  
  • Mechanical characteristics of elastomeric sheathing compound
  • Designation of compound Unit SE1
    Oil immersion test followed by a determination of themechanical properties (IEC 60811-2-1 and IEC 60811-1-1) Treatment: – oil temperature (tolerance ±2 °C) °C 100
    – duration H 24
    Maximum variation aof: a) tensile strength % ±40
    b)elongation-at-break % ±40
    Hot set test (IEC 60811-2-1) Treatment: – temperature (tolerance ±3 °C) °C 200
    – time under load min 15
    – mechanical stress N/cm2 20
    Maximum elongation under load % 175
    Maximum permanent elongation after cooling % 15

Electrical Characteristics of Single Core Cables

  • PVC insulation, PVC sheath cables with copper conductor
  • LOW VOLTAGE SINGLE CORE CABLE
    LINEAR RESISTANCE, REACTANCE AND VOLTAGE DROP
    PVC INSULATED (85°C)
  • SIZE Direct Current Resistance at 20°C Direct Current Resistance at 85°C Alternating Current Resistance at 85°C Reactance Impedance Voltage Drop (Phaseto Phase)
    mm² Ohm/Km Ohm/Km Ohm/Km Ohm / Km Ohm / Km V/A.Km
    1.5 12.1 15.19 15.19 0.165 15.19 21.22
    2.5 7.41 9.30 9.30 0.149 9.30 13.04
    4 4.61 5.79 5.79 0.143 5.79 8.17
    6 3.08 3.87 3.87 0.134 3.87 5.5
    10 1.83 2.3 2.3 0.132 2.3 3.32
    16 1.15 1.444 1.444 0.124 1.449 2.13
    25 0.727 0.913 0.913 0.121 0.921 1.39
    35 0.524 0.658 0.658 0.115 0.668 1.031
    50 0.387 0.486 0.467 0.111 0.499 0.79
    70 0.268 0.336 0.337 0.105 0.353 0.576
    95 0.193 0.242 0.244 0.103 0.265 0.445
    120 0.153 0.192 0.194 0.100 0.218 0.373
    150 0.124 0.156 0.158 0.100 0.187 0.323
    185 0.0991 0.1244 0.1272 0.099 0.161 0.279
    240 0.0754 0.0947 0.0978 0.097 0.138 0.236
    300 0.0601 0.0754 0.0800 0.096 0.124 0.210
    400 0.0470 0.0590 0.0626 0.094 0.113 0.184
    500 0.0366 0.0459 0.0504 0.092 0.105 0.165
    630 0.0283 0.0355 0.0413 0.091 0.100 0.152
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  • XLPE insulation, LSF sheath cables with copper conductor
  • LOW VOLTAGE SINGLE CORE CABLE
    LINEAR RESISTANCE, REACTANCE AND VOLTAGE DROP
    XLPE INSULATED (90°C)
  • SIZE Direct Current Resistance at 20°C Direct Current Resistance at 90°C AlternatingCurrent Resistance at 90°C Reactance Impedance Voltage Drop (Phaseto Phase)
    mm² Ohm/Km Ohm/Km Ohm/Km Ohm / Km Ohm / Km V/A.Km
    1.5 12.1 15.43 15.43 0.165 15.43 21.43
    2.5 7.41 9.45 9.45 0.149 9.45 13.85
    4 4.61 5.88 5.88 0.143 5.88 8.3
    6 3.08 3.93 3.93 0.134 3.93 5.58
    10 1.83 2.333 2.333 0.132 2.337 3.37
    16 1.15 1.466 1.466 0.124 1.471 2.16
    25 0.727 0.927 0.927 0.121 0.935 1.41
    35 0.524 0.668 0.669 0.115 0.679 1.046
    50 0.387 0.493 0.494 0.111 0.506 0.8
    70 0.268 0.342 0.343 0.105 0.359 0.584
    95 0.193 0.246 0.248 0.103 0.269 0.451
    120 0.153 0.195 0.197 0.1 0.221 0.377
    150 0.124 0.158 0.16 0.1 0.189 0.326
    185 0.0991 0.126 0.129 0.099 0.163 0.282
    240 0.0754 0.0961 0.0993 0.097 0.139 0.238
    300 0.0601 0.0766 0.0812 0.096 0.126 0.212
    400 0.047 0.0599 0.0636 0.094 0.114 0.186
    500 0.0366 0.0467 0.0513 0.092 0.105 0.167
    630 0.0283 0.0361 0.042 0.091 0.1 0.153

Electrical Characteristics of Three Core Cables

  • PVC insulation, PVC sheath cables with copper conductor
  • LOW VOLTAGE MULTI CORE CABLE
    LINEAR RESISTANCE, REACTANCE AND VOLTAGE DROP
    PVC INSULATED (85°C)
  • SIZE Direct Current Resistance at 20°C Direct Current Resistance at 85°C AlternatingCurrent Resistance at 85°C Reactance Impedance Voltage Drop (Phase toPhase)
    mm² Ohm/Km Ohm/Km Ohm/Km Ohm / Km Ohm / Km V/A.Km
    1.5 12.1 15.19 15.19 0.165 15.19 21.22
    2.5 7.41 9.30 9.30 0.143 9.30 13.04
    4 4.61 5.79 5.79 0.132 5.79 8.16
    6 3.08 3.87 3.87 0.121 3.87 5.49
    10 1.83 2.30 2.30 0.109 2.30 3.3
    16 1.15 1.444 1.444 0.106 1.448 2.11
    25 0.727 0.913 0.913 0.103 0.919 1.37
    35 0.524 0.658 0.658 0.098 0.666 1.014
    50 0.387 0.486 0.487 0.098 0.496 0.777
    70 0.268 0.336 0.337 0.095 0.351 0.566
    95 0.193 0.242 0.244 0.093 0.261 0.435
    120 0.153 0.192 0.194 0.091 0.214 0.363
    150 0.124 0.156 0.158 0.091 0.182 0.314
    185 0.0991 0.1244 0.1272 0.091 0.1564 0.271
    240 0.0754 0.0947 0.0978 0.090 0.1329 0.229
    300 0.0601 0.0754 0.0800 0.090 0.1204 0.204
    400 0.0470 0.0590 0.0626 0.089 0.1088 0.179
    500 0.0366 0.0459 0.0504 0.088 0.1014 0.161
    630 0.0283 0.0355 0.0413 0.088 0.0972 0.149
  •  
  • XLPE insulation, LSF sheath cables with copper conductor
  • LOW VOLTAGE MULTI CORE CABLE
    LINEAR RESISTANCE, REACTANCE AND VOLTAGE DROP
    XLPE INSULATED (90°C)
  • SIZE Direct Current Resistance at 20°C Direct Current Resistance at 90°C AlternatingCurrent Resistance at 90°C Reactance Impedance Voltage Drop (Phase toPhase)
    mm² Ohm/Km Ohm/Km Ohm/Km Ohm / Km Ohm / Km V/A.Km
    1.5 12.1 15.43 15.43 0.165 15.43 21.55
    2.5 7.41 9.45 9.45 0.143 9.45 13.24
    4 4.61 5.88 5.88 0.132 5.88 8.28
    6 3.08 3.93 3.93 0.121 3.93 5.57
    10 1.83 2.333 2.333 0.109 2.336 3.35
    16 1.15 1.466 1.466 0.106 1.47 2.14
    25 0.727 0.927 0.927 0.103 0.933 1.39
    35 0.524 0.668 0.669 0.098 0.676 1.03
    50 0.387 0.493 0.494 0.098 0.504 0.786
    70 0.268 0.342 0.343 0.095 0.356 0.574
    95 0.193 0.246 0.248 0.093 0.264 0.44
    120 0.153 0.195 0.197 0.091 0.217 0.37
    150 0.124 0.158 0.16 0.091 0.184 0.316
    185 0.0991 0.126 0.129 0.091 0.1579 0.273
    240 0.0754 0.0961 0.0993 0.09 0.134 0.231
    300 0.0601 0.0766 0.0812 0.09 0.1212 0.206
    400 0.047 0.0599 0.0636 0.089 0.1094 0.181
    500 0.0366 0.0467 0.0513 0.088 0.1019 0.163
    630 0.0283 0.0361 0.042 0.088 0.0975 0.15