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IEC60502-2 Three cores XLPE Insulation medium voltage electrical cable up to 36kv
Compliances
Application
The international standard three-core medium-voltage cable is typically employed in power transmission and distribution systems for the transmission of medium-voltage electrical energy. Such cables are suitable for use in the distribution of electrical power in industrial, commercial and residential areas, as well as for the transmission of power in distributed generation systems. Specific application scenarios include, but are not limited to, the following:
In industrial contexts, the cables are used for power transmission in factories, mines, manufacturing facilities, and other industrial settings.
In the context of building use, the cables are employed for the distribution of power in both commercial and residential premises.
A distributed power generation system is a system that facilitates the transmission of power from distributed energy sources, such as solar and wind power generation.
Additionally, international standard three-core medium-voltage cables may be utilised in certain exceptional circumstances, such as power transmission in subterranean settings, including underground tunnels, subways, and subterranean power facilities. These represent merely a sampling of the potential applications. In reality, international standard three-core medium-voltage cables can be deployed in a multitude of scenarios necessitating medium-voltage power transmission. Should you have particular application scenarios or other related inquiries,
Structure
| 1 | Conductor | Copper or Aluminum Alloy |
| According to IEC60228 | ||
| 2 | Conductor Screen | semi-conducting cross-linkable |
| 3 | Insulation | Neutral XLPE cross-linked polyethylene |
| 4 | Insulated Screen | semi-conducting cross-linkable |
| 5 | Separation Sheath | Black PVC or as request |
| 6 | Armour | Galvanized steel wire |
| 7 | Over Sheath | Blue PVC or as demand |
Types of Armour:
1.galvanized steel wire
2.double steel tape armour
2.double steel tape armour
The function of medium voltage cables steel wire armored
The steel wire armouring of medium-voltage cables in international standards serves the following principal functions:
The primary function of the steel wire armouring of medium-voltage cables in international standards is to provide mechanical protection. The steel wire armour provides mechanical protection for cables, offering resistance to external extrusion, stretching and physical damage, thereby safeguarding the insulation and conductors located within the cable.
The tensile performance of the steel wire armour is as follows: The steel wire armour can serve to enhance the tensile performance of the cable, thus enabling it to withstand a certain tensile force. Such a solution is appropriate for situations where the cable is to be buried or must traverse a complex environment.
The protective performance of steel wire armour is as follows: The application of steel wire armour can facilitate the provision of an additional layer of protection, thereby preventing the ingress of external chemical substances and moisture, and thus extending the service life of the cable.
In general, steel wire armour is employed for the purposes of mechanical protection, tensile performance and protective performance in medium-voltage cables.
Single Core 6.35/11KV (Um=12KV) Dimensional Data
| Nom. | Nom. Insulation Thickness | Copper Wire Screen Area | Copper Tape Screen Area | Nom. Bedding Thickness | Nom. Armour Wire Diameter | Nom.Sheath Thickness | Approx. Overall Diameter | Approx. Weight | |
| Cross- Section Area | CU | AL | |||||||
| mm² | mm | mm² | mm² | mm | mm | mm | mm | kg/km | |
| 70 | 3.4 | 16 | 8.2 | 1.2 | 1.6 | 1.9 | 32.2 | 1842 | 1402 |
| 95 | 3.4 | 16 | 8.9 | 1.2 | 1.6 | 1.9 | 33.5 | 2133 | 1532 |
| 120 | 3.4 | 16 | 9.8 | 1.2 | 1.6 | 2 | 35.3 | 2433 | 1672 |
| 150 | 3.4 | 25 | 10.4 | 1.2 | 1.6 | 2.1 | 37.7 | 2873 | 1932 |
| 185 | 3.4 | 25 | 11.2 | 1.2 | 2 | 2.1 | 39.6 | 3243 | 2082 |
| 240 | 3.4 | 25 | 12.4 | 1.2 | 2 | 2.2 | 42.3 | 3493 | 2332 |
| 300 | 3.4 | 25 | 13.4 | 1.2 | 2 | 2.2 | 44.2 | 4493 | 2562 |
| 400 | 3.4 | 35 | 14.6 | 1.2 | 2 | 2.4 | 48.4 | 5587 | 3042 |
| 500 | 3.4 | 35 | 16.2 | 1.3 | 2.5 | 2.5 | 52.2 | 6783 | 3682 |
| 630 | 3.4 | 35 | 18.9 | 1.4 | 2.5 | 2.6 | 57.5 | 8233 | 4202 |
Electrical Data
| Nom. Cross- Section Area | Short Circuit Rating of Conductor CU / AL | Reactance | Impedance | ||||
| 1 sec | Trefoil | Flat Spaced | Trefoil | Flat Spaced | |||
| CU | AL | CU | AL | ||||
| mm² | kA | µΩ/m | µΩ/m | µΩ/m | µΩ/m | ||
| 70 | 9.8/6.3 | 122 | 188 | 364 | 583 | 386 | 597 |
| 95 | 13.3/8.5 | 122 | 182 | 272 | 427 | 300 | 446 |
| 120 | 17.2/11.0 | 116 | 172 | 225 | 345 | 257 | 367 |
| 150 | 21.2/13.5 | 110 | 166 | 193 | 287 | 229 | 313 |
| 185 | 26.6/17.0 | 107 | 166 | 165 | 237 | 206 | 267 |
| 240 | 34.9/22.3 | 104 | 163 | 140 | 191 | 185 | 226 |
| 300 | 43.8/28.0 | 100 | 157 | 126 | 163 | 174 | 203 |
| 400 | 57.3/36.6 | 94 | 154 | 113 | 141 | 164 | 184 |
| 500 | 72.3/46.2 | 91 | 151 | 105 | 124 | 158 | 171 |
| 630 | 91.2/58.3 | 91 | 148 | 97 | 110 | 151 | 160 |
How to use medium voltage cable correctly
The correct utilisation of medium-voltage cables is of paramount importance, given that they are typically employed in power transmission and distribution systems. The quality and operational status of these cables directly influence the safe and reliable functioning of the power system. The following section will delineate the importance of proper medium-voltage cable utilisation.
The importance of safety cannot be overstated. The appropriate utilisation of medium-voltage cables can guarantee the secure operation of the power system, thus preventing the occurrence of fires, electric shocks and other safety-related incidents resulting from cable malfunctions.
Reliability is of paramount importance in this regard. The appropriate utilisation of medium-voltage cables can guarantee a dependable power supply for the power system, minimise power outages and incidents of production disruption caused by cable faults, and enhance the reliability of the power supply.
From an economic perspective, the correct use of medium-voltage cables can contribute to the overall cost-effectiveness of the power system. The appropriate utilisation and upkeep of medium-voltage cables can prolong their operational lifespan, curtail the necessity for repairs and replacements, and enhance the economic viability of the power system.
Environmental protection is another key benefit. The appropriate utilisation of medium-voltage cables can mitigate the environmental contamination resulting from cable malfunctions, thereby safeguarding the purity and security of the surrounding environment.
In terms of regulatory compliance, It is the legal obligation of enterprises and power system operators to comply with the relevant safety standards and regulatory requirements. The appropriate utilisation of medium-voltage cables can facilitate compliance with regulatory stipulations.
In conclusion, the appropriate utilisation of medium-voltage cables is of paramount importance to the safe, reliable, economical and environmentally friendly operation of power systems. It is therefore recommended that the relevant installation specifications and standards be strictly adhered to when using medium-voltage cables, in order to ensure safe and reliable use.