P4 or P4/P11 RFOU/TFOU 8.7/15KV Applications
These cables are flame retardant, low smoke, halogen free and mud resistant, used for fixed installation for medium voltage power.
P4 or P4/P11 RFOU/TFOU 8.7/15KV Standards
| IEC 60092-353 | IEC 60092-351 |
| IEC 60092-359 | IEC 60332-1 |
| IEC 60332-3-22 | IEC 60754-1,2 |
| IEC 61034-1,2 | NEK 606:2004 |
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P4 or P4/P11 RFOU/TFOU 8.7/15KV Construction
- Conductors : Circular tinned annealed stranded copper to IEC 60228 class 2.
- Conductor Screen : Semi conducting material.
- Insulation : Halogen-free EPR. XLPE can be offered as an option (for TFOU cable).
- Insulation Screen : Semi conducting material and tinned copper wire braid.
- Bedding : Halogen free compound.
- Armour : Tinned copper wire braid.
- Outer Sheath :Halogen free thermosetting compound, SHF2 (for TYPE P4), or halogen free mud resistant thermosetting compound, SHF MUD (for TYPE P4/P11), coloured red.
Electrical Characteristics
| Nominal Cross Section Area | mm² | 25 | 35 | 50 | 70 | 95 | 120 |
| Nominal Conductor Diameter | mm | 6.5 | 7.4 | 8.7 | 10.3 | 12.2 | 13.8 |
| Maximum DC Resistant@20℃ | Ω/km | 0.734 | 0.529 | 0.391 | 0.27 | 0.195 | 0.154 |
| Continuous Current Rating@45℃1 Core | A | 127 | 157 | 196 | 242 | 293 | 339 |
| Continuous Current Rating@45℃3 Core | A | 89 | 110 | 137 | 169 | 205 | 237 |
| Short Circuit Current 1s | A | 3580 | 5010 | 7150 | 10020 | 13590 | 17170 |
| Operating Voltage | KV | 8.7/15 | 8.7/15 | 8.7/15 | 8.7/15 | 8.7/15 | 8.7/15 |
| Nominal Cross Section Area | mm² | 150 | 185 | 240 | 300 | 400 | 500 | 630 |
| Nominal Conductor Diameter | mm | 15.1 | 17.0 | 19.6 | 21.9 | 24.5 | 27.5 | 32.3 |
| Maximum DC Resistant@20℃ | Ω/km | 0.126 | 0.1 | 0.0762 | 0.0607 | 0.0475 | 0.0369 | 0.0286 |
| Continuous Current Rating@45℃1 Core | A | 389 | 444 | 522 | 601 | 690 | 780 | 890 |
| Continuous Current Rating@45℃3 Core | A | 272 | 311 | 365 | 421 | 483 | 546 | 623 |
| Short Circuit Current 1s | A | 21460 | 26470 | 34340 | 42930 | 57230 | 71540 | 90140 |
| Operating Voltage | KV | 8.7/15 | 8.7/15 | 8.7/15 | 8.7/15 | 8.7/15 | 8.7/15 | 8.7/15 |
Ambient Temperature Correction Factors
| Ambient Temperature Correction Factors | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 |
| Rating Factor | 1.1 | 1.05 | 1.0 | 0.94 | 0.88 | 0.82 | 0.74 | 0.67 | 0.58 | 0.47 |
Mechanical and Thermal Properties
- Bending Radius :15×OD (during installation); 9×OD (fixed installed).
- Temperature Range : -20℃ ~ +90℃.
P4 or P4/P11 RFOU/TFOU 8.7/15KV Dimensions and Weight
| Construction No. of cores×Cross section (mm²) | Nominal Insulation Thickness mm | Nominal Sheath Thickness mm | Nominal Overall Diameter mm | Nominal Weight kg/km | |
| Inner | Outer | ||||
| 1×25 | 4.5 | 1.6 | 1.2 | 28.4 | 1305 |
| 1×35 | 4.5 | 1.6 | 1.3 | 29.3 | 1430 |
| 1×50 | 4.5 | 1.7 | 1.3 | 30.7 | 1620 |
| 1×70 | 4.5 | 1.8 | 1.3 | 32.4 | 1900 |
| 1×95 | 4.5 | 1.8 | 1.4 | 34.4 | 2250 |
| 1×120 | 4.5 | 1.9 | 1.5 | 36.6 | 2625 |
| 1×150 | 4.5 | 2.0 | 1.5 | 38.1 | 2940 |
| 1×185 | 4.5 | 2.0 | 1.5 | 40.6 | 3545 |
| 1×240 | 4.5 | 2.1 | 1.6 | 43.4 | 4220 |
| 1×300 | 4.5 | 2.2 | 1.7 | 46.3 | 5070 |
| 1×400 | 4.5 | 2.4 | 1.8 | 50.2 | 5760 |
| 1×500 | 4.5 | 2.5 | 1.8 | 53.6 | 6880 |
| 1×630 | 4.5 | 2.6 | 1.9 | 57.9 | 8460 |
| 3×25 | 4.5 | 2.6 | 1.9 | 55.3 | 4725 |
| 3×35 | 4.5 | 2.7 | 2.0 | 57.5 | 5215 |
| 3×50 | 4.5 | 2.8 | 2.0 | 60.6 | 5960 |
| 3×70 | 4.5 | 2.9 | 2.1 | 64.4 | 7035 |
| 3×95 | 4.5 | 3.1 | 2.2 | 68.7 | 8370 |
| 3×120 | 4.5 | 3.2 | 2.3 | 72.7 | 9745 |
| 3×150 | 4.5 | 3.4 | 2.4 | 76.8 | 11140 |
| 3×185 | 4.5 | 3.6 | 2.6 | 84.2 | 13490 |
| 3×240 | 4.5 | 3.8 | 2.7 | 90.6 | 15860 |
| 3×300 | 4.5 | 4.0 | 2.9 | 96.6 | 18320 |
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