21/35kv Mv Insulted Power Cables 3 Cores Cables
21/35kv Mv Insulted Power Cables 3 Cores Cables image
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21/35kv MV Insulted Power Cables Three Cores Cables to IEC 60502 Standards:
IEC 60502 Part 2(3.6/6KV to 18/30KV)
21/35kv MV Insulted Power Cables Three Cores Cables to IEC 60502 Application:
The single core cables are designed for distribution of electrical power with nominal voltage Uo/U ranging from 1.8/3KV to 26/35KV and frequency 50Hz. They are suitable for installation mostly in power supply stations, indoors and in cable ducts, outdoors, underground and in water as well as for installation on cable trays for industries, switchboards and power stations.
21/35kv MV Insulted Power Cables Three Cores Cables to IEC 60502 Construction:
Conductor: Plain annealed copper or aluminium complying with IEC 60228 class 2.
Conductor Screen: extruded layer of semi-conducting crosslink compound
Insulation: Insulation is of polyvinyl chloride (PVC) intended for 1.8/3.6KV and 3.6/6KV cables, cross-linked polyethylene compound (XLPE)
Nom. Cross Section Area | Insulation Thickness at Nominal Voltage | |||||||
1.8/3KV | 3.6/6KV | 6/10KV | 8.7/15KV | 12/20KV | 18/30KV | 21/35KV | 26/35KV | |
(Um=3.6KV) | (Um=7.2KV) | (Um=12KV) | (Um=17.5KV) | (Um=24KV) | (Um=36KV) | (Um=42KV) | (Um=42KV) | |
mm2 | mm | mm | mm | mm | mm | mm | mm | mm |
XLPE | XLPE | XLPE | XLPE | XLPE | XLPE | XLPE | XLPE | |
10 | 2 | 2.5 | – | – | – | – | – | – |
16 | 2 | 2.5 | 3.4 | – | – | – | – | – |
25 | 2 | 2.5 | 3.4 | 4.5 | – | – | – | – |
35 | 2 | 2.5 | 3.4 | 4.5 | 5.5 | – | – | – |
50 – 185 | 2 | 2.5 | 3.4 | 4.5 | 5.5 | 8 | 9.3 | 10.5 |
240 | 2 | 2.6 | 3.4 | 4.5 | 5.5 | 8 | 9.3 | 10.5 |
300 | 2 | 2.8 | 3.4 | 4.5 | 5.5 | 8 | 9.3 | 10.5 |
400 | 2 | 3 | 3.4 | 4.5 | 5.5 | 8 | 9.3 | 10.5 |
500 – 1600 | 2.2-2.8 | 3.2 | 3.4 | 4.5 | 5.5 | 8 | 9.3 | 10.5 |
Insulaton Screen: extruded layer of semi-conducting cross-link compound
Metallic Screen:Copper tape screen or copper wire with helically copper tape
Separation Sheath (for armoured cable): extruded PVC, PE or LSZH, applied under the armour .
Lapped Bedding : The lapped bedding consists of Polyester non woven fabrics .
Armour (for armoured cable): It consists of either flat galvanized steel wire armour (strip), round galvanized steel wire armour, and double steel tape armour.
Outer Sheath: PVC, PE, HDPE, MDPE or LSZH
Cable Character:
Operating Temperature: up to 90°C
Short Circuit Temperature( 5 seconds maximum duration ): 250°C
Bending Radius: 12 x OD
Voltage:
Rated Voltage Uo/U | Operating Voltage (Um) | Testing Voltage (rms) |
21/35KV | 40.5KV | 73.5(53)*KV |
21/35KV (Um=36KV) Power Cables Three Cores Cables to IEC 60502 Dimensional Data:
Nom. Cross-Section Area |
Steel Flat Wire Armoured Cables | Double Steel Tape Armoured Cables | ||||||||||
Nom. Bedding Thickness |
Armour Wire Size | Nom. Sheath Thickness |
Approx. Overall Diameter |
Approx. Weight |
Nom. Bedding Thickness |
No of Steel Tapes x Nom Tape Thickness | Nom. Sheath Thickness |
Approx.Overall Diameter | Approx. Weight |
|||
CU | AL | CU | AL | |||||||||
50 | 1.9 | 0.8 | 3.3 | 80.5 | 9825 | 8986 | 1.9 | 2×0.5 | 3.5 | 82.5 | 9625 | 8786 |
70 | 2 | 0.8 | 3.6 | 85.5 | 11015 | 9769 | 2 | 2×0.8 | 3.8 | 87.6 | 10825 | 9569 |
95 | 2.1 | 0.8 | 3.8 | 88.5 | 12360 | 10580 | 2.1 | 2×0.8 | 3.9 | 90.5 | 12116 | 10327 |
120 | 2.1 | 0.8 | 3.9 | 91.5 | 13900 | 11715 | 2.1 | 2×0.8 | 4 | 94.5 | 13306 | 11110 |
150 | 2.1 | 0.8 | 4 | 94.8 | 15160 | 12440 | 2.1 | 2×0.8 | 4.1 | 97.5 | 14550 | 11830 |
185 | 2.2 | 0.8 | 4.1 | 99.5 | 17500 | 13450 | 2.2 | 2×0.8 | 4.2 | 101.7 | 16810 | 12765 |
240 | 2.3 | 0.8 | 4.2 | 104.1 | 19390 | 14890 | 2.3 | 2×0.8 | 4.4 | 107.5 | 18650 | 14150 |
300 | 2.4 | 0.8 | 4.4 | 109.5 | 21970 | 16280 | 2.4 | 2×0.8 | 4.6 | 112.8 | 21200 | 15500 |
400 | 2.5 | 0.8 | 4.6 | 116.3 | 25600 | 18430 | 2.5 | 2×0.8 | 4.8 | 118.8 | 24780 | 17600 |
Nominal screen area, as stated in the table, can be supplied as standard.
Nom. Cross- Section Area | D C Resistance CU / AL |
A C Resistance CU / AL |
Short Circuit Rating of Conductor CU / AL (1 sec) |
Capaci tance | Charging Current | Short Circuit Rating of Copper Wire Screen Per Core(1 sec) | Short Circuit Rating of Copper Tape Screen Per Core(1 sec) | Reactance | Inductance |
50 | 387/641 | 494/822 | 6.8/4.4 | 135 | 0.91 | 2.6 | 1.1 | 140 | 450 |
70 | 268/443 | 343/568 | 9.8/6.3 | 151 | 1.01 | 2.6 | 1.1 | 134 | 415 |
95 | 193/320 | 248/410 | 13.3/8.5 | 166 | 1.11 | 2.6 | 1.2 | 126 | 405 |
120 | 153/253 | 196/325 | 17.2/11.0 | 179 | 1.21 | 2.6 | 1.2 | 123 | 385 |
150 | 124/206 | 159/265 | 21.2/13.5 | 189 | 1.29 | 4.3 | 1.3 | 118 | 375 |
185 | 99.1/164 | 128/211 | 26.6/17.0 | 202 | 1.38 | 4.3 | 1.3 | 114 | 365 |
240 | 75.4/125 | 98/161 | 34.9/22.3 | 221 | 1.49 | 4.3 | 1.4 | 109 | 345 |
300 | 60.1/100 | 80/130 | 43.8/28.0 | 240 | 1.65 | 4.3 | 1.5 | 105 | 335 |
400 | 47.0/77.8 | 64/102 | 57.3/36.6 | 267 | 1.75 | 5.8 | 1.6 | 101 | 305 |
21/35KV (Um=36KV) Power Cables Three Cores Cables to IEC 60502 Electrical Data
Nom. Cross-Section Area |
Nom. Insulation Thickness |
Copper Tape Thickness | Copper Wire Screen Area* | Unarmoured Cables | Steel Wire Armoured Cables | ||||||||
Nom. Sheath Thickness |
Approx. Overall Diameter |
Approx. Weight |
Nom. Bedding Thickness |
Armour Wire Size | Nom. Sheath Thickness |
Approx. Overall Diameter |
Approx. Weight |
||||||
CU | AL | CU | AL | ||||||||||
50 | 10.5 | 0.1 | 16 | 3.4 | 79.7 | 5928 | 5053 | 1.9 | 3.5 | 4 | 93.5 | 12050 | 11150 |
70 | 10.5 | 0.1 | 16 | 3.5 | 83.6 | 6900 | 5634 | 2 | 4 | 4.1 | 97.5 | 13150 | 11850 |
95 | 10.5 | 0.1 | 16 | 3.6 | 87.2 | 7863 | 6131 | 2.1 | 4 | 4.2 | 101.5 | 14800 | 12950 |
120 | 10.5 | 0.1 | 16 | 3.8 | 90.7 | 8817 | 6634 | 2.2 | 4 | 4.4 | 105.5 | 16050 | 13800 |
150 | 10.5 | 0.1 | 25 | 3.9 | 94.1 | 10085 | 7361 | 2.3 | 4.5 | 4.5 | 108.5 | 17420 | 14640 |
185 | 10.5 | 0.1 | 25 | 4 | 99.1 | 11573 | 8120 | 2.3 | 4.5 | 4.6 | 112 | 19200 | 15700 |
240 | 10.5 | 0.1 | 25 | 4.1 | 103.6 | 13387 | 9023 | 2.4 | 4.5 | 4.7 | 117 | 21050 | 16800 |
300 | 10.5 | 0.1 | 25 | 4.3 | 109.2 | 15658 | 10060 | 2.5 | 4.5 | 4.8 | 122.5 | 24900 | 19100 |
400 | 10.5 | 0.1 | 35 | 4.5 | 115.6 | 19013 | 11657 | 2.6 | 4.5 | 5.1 | 129 | 29200 | 21560 |
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