
12.7/22Kv medium voltage cable is resistant to chemical corrosion. In some industrial environments, chemical leakage may cause serious damage to the cable. By using chemical-resistant materials, the cable can maintain stable performance in an environment with corrosive substances such as acids and alkalis, ensuring the safety and reliability of the power supply system.
Min. installation temperature: 0°C
Operating temperature: -25°C to +90°C
Emergency operating temperature: 105°C
Max. Short Circuit Temperature: 250°C
Application
3 core anti-termite 12.7/22kV medium voltage cable is suitable for power distribution in rural electrification projects, mining areas, and large-scale agricultural operations, where underground utilities are susceptible to soil-borne risks. In areas with frequent termite activity, standard cables often suffer damage, compromising their reliability and safety. This termite-resistant cable features a special protective outer sheath, ensuring long-term durability even when directly buried in harsh soil conditions.

Feature

• Conductor: Stranded Compacted Circular aluminum conductor as per AS/NZS 1125
• Conductor Screen: Extruded Semi-conductive compound
• Insulation: XLPE
• Insulation Screen: Extruded Semi-conductive compound
• Longitudinal Water blocking : Water blocking tape above and below copper screen (Optional)
• Metallic Insulation Screen: Copper Wire Screen + helically applied copper tape
• binder tape/sheath over assembled cores
Composite sheath
• Inner layer: Extruded Polyvinyl Chloride, Colour: Orange
• Termite Protection: Polyamide (Nylon -12)
• Outer layer: HDPE (Black)
Certification
Our medium voltage cables are certified with SAA certification numbers SAA242046 and SAA250307. The traceability of products achieved through SAA certification helps companies maintain consistent quality control across multiple projects. For engineering companies and contractors working on large-scale infrastructure projects, this ensures the same level of verified quality on every project. If discrepancies arise, certification records provide an objective benchmark for identifying and resolving them. This allows projects to proceed smoothly and reinforces product compliance, traceability, and safe installation services.

Package

Factory

Dongguan Greater Wire & Cable Co., Ltd., is located in Dongguan City, Guangdong province. It integrates R&D, production, sales and maintenance, focusing on various wires and cables, and providing customized solutions for large-scale infrastructure such as airports, hospitals, factories, and schools in many regions around the world. With advanced production equipment and processes, complete testing equipment, and strong technical strength, the company has developed rapidly after years of hard work and the support of global customers, and has won a high reputation and market share in overseas markets.
Case

Partner

FAQ
Q: Does the cable need an additional layer of protection?
1. Underground laying: Cables buried directly underground usually need an additional layer of protection to protect against moisture, chemicals, pests and mechanical impact in the soil. This protective layer is usually polyethylene, PVC or steel belt armor, which helps to improve corrosion resistance and pressure resistance.
2. Wet or underwater environment: Cables laid in wet or underwater environments need to have a waterproof layer or waterproof sheath to prevent moisture from penetrating and avoid insulation failure. Commonly used waterproof materials include rubber or polyvinyl chloride (PVC) waterproof sheath.
3. Corrosive environment: In chemical plants, seaside or highly corrosive industrial environments, cables will be corroded by chemicals such as acids and alkalis. Corrosion-resistant sheath materials such as lead, PVC or polyethylene are needed to protect the cables.
4. High risk of mechanical damage: In places where there are frequent vehicle rolling, vibration or mechanical impact (such as mines, docks, factory workshops), it is recommended to use cables with steel belt armor or steel wire armor to improve their mechanical resistance.
5. High or low temperature environment: In high temperature or extremely cold environment, ordinary sheath materials may not be able to withstand temperature changes. In high temperature environment, high temperature resistant silicone rubber sheath can be selected, and in low temperature environment, low temperature special plastic material is used to protect the cable.
6. Electromagnetic interference area: In places with strong electromagnetic interference (such as places where power equipment is concentrated), a metal shielding layer or shielding net can be added to suppress electromagnetic interference and ensure that the signal transmission of the cable is not affected.
7. Flame retardant and fire resistant requirements: In public places such as tunnels, subways, shopping malls, etc., cables should have flame retardant or fire resistant protective layers to prevent the spread of fire and reduce the release of toxic gases during fire.
Q: What's your Minimum Order Quantity?
Q: How can we guarantee quality?
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|
No. of
Cores
|
Core Cross
sectional
Area
|
Nominal Diameter
|
||
|
Under
metallic
screen
|
Under
metallic
screen
|
Overall
|
||
|
No.
|
mm2
|
mm
|
mm
|
mm
|
| 3 | 35 | 21.1 | 22.6 | 54.0 |
| 3 | 50 | 22.2 | 23.7 | 57.0 |
| 3 | 70 | 23.8 | 25.3 | 61.0 |
| 3 | 95 | 25.4 | 26.9 | 64.0 |
| 3 | 120 | 27 | 28.5 | 68.0 |
| 3 | 150 | 28.3 | 29.8 | 71.0 |
| 3 | 185 | 30 | 31.5 | 75.0 |
| 3 | 240 | 32.3 | 33.8 | 80.0 |
| 3 | 300 | 34.5 | 36.0 | 85.0 |
| 3 | 400 | 37.2 | 38.7 | 91.0 |
| 3 | 500 | 40.6 | 42.1 | 99.0 |
|
No.of Cores
|
Core Cross sectional Area
|
Max. DC Resistance at 20˚C
|
Max. AC Resistance at 90˚C
|
Approx. Capacitance
|
Approx. Inductance
|
Approx.
Reactance |
Continuous Current Rating
|
||
| Buried direet in ground |
In a buried duct
|
In Air
|
|||||||
|
No.
|
mm2
|
Ω/km
|
Ω/km
|
µF/km
|
mH/km
|
Ω/km
|
Amps
|
||
| 3 | 35 | 0.868 | 1.113 | 0.16 | 0.627 | 0.197 | 119 | 103 | 132 |
| 3 | 50 | 0.641 | 0.822 | 0.17 | 0.605 | 0.190 | 140 | 122 | 158 |
| 3 | 70 | 0.443 | 0.568 | 0.2 | 0.572 | 0.180 | 171 | 150 | 196 |
| 3 | 95 | 0.32 | 0.410 | 0.22 | 0.552 | 0.174 | 203 | 179 | 236 |
| 3 | 120 | 0.253 | 0.325 | 0.24 | 0.534 | 0.168 | 232 | 205 | 273 |
| 3 | 150 | 0.206 | 0.265 | 0.25 | 0.523 | 0.164 | 260 | 231 | 309 |
| 3 | 185 | 0.164 | 0.211 | 0.28 | 0.511 | 0.161 | 294 | 262 | 355 |
| 3 | 240 | 0.125 | 0.161 | 0.31 | 0.498 | 0.156 | 340 | 305 | 415 |
| 3 | 300 | 0.1 | 0.129 | 0.33 | 0.485 | 0.152 | 384 | 346 | 475 |
| 3 | 400 | 0.778 | 0.101 | 0.37 | 0.474 | 0.149 | 438 | 398 | 552 |
| 3 | 500 | 0.0605 | 0.079 | 0.41 | 0.463 | 0.145 | 505 | 460 | 646 |
| 20 | 25 | 35 | 40 | 45 | 50 | 55 | 60 |
| 1.08 | 1.04 | 0.96 | 0.91 | 0.87 | 0.82 | 0.76 | 0.71 |
| 10 | 15 | 25 | 30 | 35 | 40 | 45 | 50 |
| 1.07 | 1.04 | 0.96 | 0.93 | 0.89 | 0.85 | 0.80 | 0.76 |
|
No.of Cores
|
Core Cross sectional Area
|
Max. pulling tension on conductor
|
Charging Current per phase
|
Zero sequence impedance
|
Electric Stress at Conductor Screen
|
Short circuit rating of Phase conductor
|
| No. | mm² | kN | Amps/Km | Ohms/Km | kV/mm | kA, I sec |
| 3 | 35 | 1.75 | 0.64 | 2.27 | 3.7 | 3.1 |
| 3 | 50 | 2.5 | 0.68 | 1.98 | 3.5 | 4.5 |
| 3 | 70 | 3.5 | 0.8 | 1.73 | 3.4 | 6.2 |
| 3 | 95 | 4.75 | 0.88 | 1.57 | 3.2 | 8.5 |
| 3 | 120 | 6 | 0.96 | 1.49 | 3.1 | 10.7 |
| 3 | 150 | 7.5 | 1 | 1.42 | 3.1 | 13.4 |
| 3 | 185 | 9.25 | 1.12 | 1.37 | 3.0 | 16.5 |
| 3 | 240 | 12 | 1.24 | 1.32 | 2.9 | 21.4 |
| 3 | 300 | 15 | 1.32 | 1.29 | 2.9 | 26.8 |
| 3 | 400 | 20 | 1.48 | 1.26 | 2.8 | 35.5 |
| 3 | 500 | 25 | 1.64 | 1.24 | 2.7 | 44.7 |































