19/33kV single core copper MV wire, the conductor twisting design enhances the flexibility of the cable, making it more suitable for complex installation environments. The overall structure of the cable is carefully designed to ensure that the performance will not be degraded due to external forces during long-term use.
Min. installation temperature: 0°C
Operating temperature: -25°C to +90°C
Emergency operating temperature: 105°C
Max. Short Circuit Temperature: 250°C
Application
Copper medium voltage wire has the ability to resist electromagnetic interference and is suitable for servers and storage devices in data centers. Since data centers have extremely high requirements for power supply, cables are used to ensure the stability and reliability of power distribution in data centers.
Feature
• Conductor: Stranded Compacted Circular Copper conductor as per AS/NZS 1125
• Conductor Screen: Extruded Semi-conductive compound
• Insulation: XLPE
• Insulation Screen: Extruded Strippable Semi-conductive compound
• Longitudinal Water blocking: Water blocking tape above and below the copper screen (Optional)
• Metallic Insulation Screen: Copper Wire Screen + helically applied copper tape (E/F current capacity – Based on requirement)
• Metallic Sheath: Lead Alloy (optional)
• Termite Protection: Polyamide (Nylon -12) (optional)
(Alternative Sheath: PVC+HDPE Composite Sheath or PVC + Nylon + HDPE
(composite sheath with anti-termite properties) or LSZH Outer sheath, and parameters will change accordingly)
Certification
19/33kV MV Cables have obtained SAA certification, with certification numbers: SAA242046 and SAA250307 (available on the certification website). Dongguan Greater Wire & Cable Co., Ltd.'s cables meet environmental and sustainability requirements, including safe material use, efficient performance, and compliance with environmental regulations. SAA certification is particularly important for energy projects, mining projects, and other projects, as it demonstrates a commitment to safety and environmental stewardship.
Package
Factory
In order to meet the special needs of different customers, the factory has established a highly flexible production system. Through customized services, customers can put forward demands for conductor materials, insulation materials, sheath materials, etc. according to their specific needs. The factory's flexible production system can quickly respond to customers' personalized needs, whether it is mass production or small batch orders, it can be met in a timely manner. At the same time, the factory ensures that customized orders are completed on time by quickly adjusting production lines and flexible production arrangements. Flexible production has improved the factory's market competitiveness and increased customer satisfaction.
Case
Partner
FAQ
Q: What are the common losses of cables?
1. Conductor loss, the heat loss (i.e. resistance loss) generated when the current passes through the conductor, which is the most common loss in the cable. The material of the conductor, resistivity, cross-sectional area of the cable, current size and operating temperature of the cable will affect the conductor loss.
2. Dielectric loss, is the heat loss caused by polarization and leakage current of the cable insulation layer under the action of the electric field. Under AC voltage, the insulation material will produce polarization and consume a certain amount of electrical energy. The type and characteristics of the insulating material, the operating voltage and frequency will affect the dielectric loss. Generally, the higher the operating frequency and the higher the operating voltage, the greater the dielectric loss.
3. Shielding loss, metal shielding layers are often used in medium and high voltage cables to stabilize the electric field. The resistance of the shielding layer will cause loss, especially when a large current passes through, it will generate induced current and heat. Cable structure, resistivity of shielding materials and current size. The shielding loss of single-core cables is more significant under AC current, especially in armored or shielded cables.
4. Joint loss, local heat loss at the cable joint due to contact resistance, unsatisfactory contact area and other factors. Joint material, process quality, oxidation or loosening of the contact surface will affect joint loss.
5. Stray loss refers to other non-main losses, such as minor losses caused by the magnetic field around the cable and the capacitance effect of the cable. Cable layout, the distance between the cable and surrounding metal components, etc. will affect stray loss.
Q: How to reduce cable loss?
2. Use low-loss insulation materials: such as XLPE insulation to reduce dielectric loss.
3. Reasonable installation and maintenance: ensure good contact between joints to reduce joint loss.
4. Heat dissipation management: optimize the laying method of cables to avoid overheating.
Q: Does the electrical performance of the cable meet international standards?
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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
|
| 1 | 50 | 27.2 | 29.1 | 33.0 |
| 1 | 70 | 28.9 | 30.8 | 35.0 |
| 1 | 95 | 30.4 | 32.3 | 37.0 |
| 1 | 120 | 32 | 33.9 | 38.0 |
| 1 | 150 | 33.4 | 35.3 | 40.0 |
| 1 | 185 | 35.1 | 37.0 | 42.0 |
| 1 | 240 | 37.4 | 39.3 | 44.0 |
| 1 | 300 | 39.4 | 41.3 | 46.0 |
| 1 | 400 | 42.2 | 44.1 | 49.0 |
| 1 | 500 | 45.6 | 47.5 | 53.0 |
| 1 | 630 | 49.2 | 51.1 | 57.0 |
| 1 | 800 | 52.9 | 54.8 | 61.0 |
| 1 | 1000 | 57.2 | 59.1 | 65.0 |
|
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
|
|||||
|
In ground at 20℃
|
In Duct at
20℃
|
In air at 30℃
|
||||||||||
|
Flat |
Trefoil
|
Flat
|
Trefoil
|
Flat
|
Trefoil
|
|||||||
|
No.
|
mm2
|
Ω/km
|
Ω/km
|
µF/km
|
mH/km
|
Ω/km
|
Amps
|
|||||
| 1 | 50 | 0.387 | 0.494 | 0.14 | 0.486 | 0.153 | 203 | 196 | 188 | 186 | 243 | 238 |
| 1 | 70 | 0.268 | 0.342 | 0.15 | 0.449 | 0.141 | 246 | 239 | 229 | 227 | 303 | 296 |
| 1 | 95 | 0.193 | 0.247 | 0.17 | 0.429 | 0.135 | 293 | 285 | 274 | 271 | 369 | 361 |
| 1 | 120 | 0.153 | 0.196 | 0.18 | 0.409 | 0.128 | 332 | 323 | 311 | 308 | 426 | 417 |
| 1 | 150 | 0.124 | 0.159 | 0.19 | 0.396 | 0.124 | 366 | 361 | 347 | 343 | 481 | 473 |
| 1 | 185 | 0.0991 | 0.128 | 0.21 | 0.382 | 0.120 | 410 | 406 | 391 | 387 | 550 | 543 |
| 1 | 240 | 0.0754 | 0.098 | 0.23 | 0.367 | 0.115 | 470 | 469 | 453 | 447 | 647 | 641 |
| 1 | 300 | 0.0601 | 0.079 | 0.25 | 0.354 | 0.111 | 524 | 526 | 510 | 504 | 739 | 735 |
| 1 | 400 | 0.047 | 0.063 | 0.27 | 0.341 | 0.107 | 572 | 590 | 571 | 564 | 837 | 845 |
| 1 | 500 | 0.0366 | 0.051 | 0.3 | 0.327 | 0.103 | 660 | 655 | 640 | 635 | 970 | 960 |
| 1 | 630 | 0.0283 | 0.042 | 0.33 | 0.316 | 0.099 | 735 | 730 | 715 | 710 | 1110 | 1100 |
| 1 | 800 | 0.0221 | 0.034 | 0.37 | 0.306 | 0.096 | 770 | 820 | 800 | 790 | 1260 | 1250 |
| 1 | 1000 | 0.0176 | 0.031 | 0.4 | 0.297 | 0.093 | 825 | 885 | 865 | 855 | 1420 | 1410 |
| 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 |
| 1 | 50 | 3.5 | 0.84 | 1.66 | 4.1 | 7.2 |
| 1 | 70 | 4.9 | 0.9 | 1.50 | 3.9 | 10.0 |
| 1 | 95 | 6.65 | 1.01 | 1.41 | 3.7 | 13.6 |
| 1 | 120 | 8.4 | 1.07 | 1.36 | 3.6 | 17.1 |
| 1 | 150 | 10.5 | 1.13 | 1.32 | 3.5 | 21.4 |
| 1 | 185 | 12.95 | 1.25 | 1.29 | 3.4 | 26.4 |
| 1 | 240 | 16.8 | 1.37 | 1.26 | 3.3 | 34.3 |
| 1 | 300 | 21 | 1.49 | 1.24 | 3.2 | 42.8 |
| 1 | 400 | 28 | 1.61 | 1.22 | 3.1 | 56.9 |
| 1 | 500 | 35 | 1.79 | 1.21 | 3.0 | 71.5 |
| 1 | 630 | 44.1 | 1.97 | 1.20 | 2.9 | 90.2 |
| 1 | 800 | 56 | 2.21 | 1.19 | 2.9 | 114 |
| 1 | 1000 | 70 | 2.39 | 1.19 | 2.8 | 143 |
