学士 6622 中压电缆
学士 6622 Single Core Medium Voltage Cable
应用
Power single-core cable voltage range from 3.8/6.6KV to 19/33KV, frequency 50Hz. mainly used in power supply stations, indoor and outdoor laying, 管道, 隧道, 地雷, shafts, soil buried and submarine water, ETC。, and can withstand considerable pressure and mechanical forces, axial tensile force.
结构
导体 | Plain annealed copper or aluminum conductors Copper conductors are generally stranded (Part II) and aluminum conductors can be either stranded or solid (Part II). |
Conductor Shield | Extruded semiconducting cross-linked composite layers are applied outside the conductor and completely cover it. The minimum thickness is 0.3 mm and the maximum resistivity shall not exceed 500 ohms at 90°C. Please contact ZMS for details. |
绝缘 | Cross-linked polyethylene compounds |
外护套 | PVC material/Medium Density Polyethylene (MDPE)/低烟无卤, the outer sheath color is usually black. The usual thickness of the outer sheath is 0.035D+1.0, with D indicating the diameter of the outer sheath in millimeters. |
Physical Properties
工作温度: up to 90°C
Temperature range: -5℃ (PVC jacket); -20℃ (PE jacket)
Short-circuit temperature: 250℃ (maximum duration of short-circuit not exceeding 5s)
弯曲半径: 12 x OD
Voltage Specification
| 额定电压 单位/单位 | Operating Voltage(Um) | Testing Voltage (rms) |
| 3.8/6.6电压 | 7.2电压 | 15电压 |
| 6.35/11电压 | 12电压 | 25.5电压 |
| 8.7/15电压 | 17.5电压 | 35电压 |
| 12.7/22电压 | 24电压 | 51电压 |
| 19/33电压 | 36电压 | 76电压 |
学士 6622 Three Core Medium Voltage Cable
应用
学士 6622 three-core cables are designed for power distribution from 3.8/6.6KV to 19/33KV at 50Hz.They are mainly used in a variety of applications such as power supply stations, indoor conduits, 户外的, buried and in water, and for the installation of cables to the industry, distribution stations, and power station cables.
结构
导体 | Plain annealed copper or aluminum conductors Copper conductors are generally stranded (Part II) and aluminum conductors can be either stranded or solid (Part II). |
Conductor Shield | Extruded semiconducting cross-linked composite layers are applied outside the conductor and completely cover it. The minimum thickness is 0.3 mm and the maximum resistivity shall not exceed 500 ohms at 90°C. Please contact ZMS for details. |
绝缘 | Cross-linked polyethylene compounds |
Insulation Shield | PVC material/Medium Density Polyethylene (MDPE)/低烟无卤, the outer sheath color is usually black. The usual thickness of the outer sheath is 0.035D+1.0, with D indicating the diameter of the outer sheath in millimeters. |
Inner Fill & 包装 | The inner layer is generally made of waterproof material, unless the cable is to be longitudinally waterproofed. The inner layer is extruded or overlapped. |
Physical Characteristics
工作温度: up to 90°C
Temperature range: -5℃ (PVC jacket); -20℃ (PE jacket)
Short-circuit temperature: 250℃ (maximum duration of short-circuit not exceeding 5s)
弯曲半径: 15 x OD
Voltage Specification
额定电压 单位/单位 | Operating Voltage(Um) | Testing Voltage (rms) |
3.8/6.6电压 | 7.2电压 | 15电压 |
6.35/11电压 | 12电压 | 25.5电压 |
8.7/15电压 | 17.5电压 | 35电压 |
12.7/22电压 | 24电压 | 51电压 |
19/33电压 | 36电压 | 76电压 |
About BS 6622 中压电缆
The most commonly used medium voltage cable under the BS6622 standard is the 11kv voltage, as it can be used for power networks, fixed installations in outdoor cable ducts or directly into the ground, and has a wide range of applications, and is indispensable for a variety of power pr ojects and urban electricity use.
在 the range of medium voltage cables, the voltage range goes up to about 33kv and may also reach 35kv or 40kv depending on the standards of different countries.
What is the difference between the common 11kv and 33kv for the same medium voltage cable?
Different Voltage Ratings
- 11kV cable: Rated voltage is generally 6/10kV or 6.35/11kV.
- 33kV cables: the rated voltage is generally 19/33kV or 18/30kV.
The higher the voltage level, the higher the requirements for cable insulation, sheath and other materials.
Different Application Acenarios
11千伏电缆 | – Mostly used for secondary power supply in urban distribution system, such as from the substation to the user distribution cabinet; – Factories, 学校, small industrial parks and other medium-sized load places. |
33kV cable | – Used for backbone power transmission lines, e.g. from substations to multiple lower level transformers; – Suitable for long-distance, high-capacity power transmission, such as wind farms, photovoltaic power stations or large industrial load centers. |
Differences in Structural Design
Due to the higher voltages they are subjected to, 33kV cables have a more complex construction, including thicker insulation (e.g. 交联聚乙烯), tighter shielding systems (conductive shielding, metallic shielding), sheathing and so on, making them more mechanically protective.
11kV cables, 另一方面, have a simpler construction, but still include the basic conductor shielding, insulation and metal shielding.
11kV vs 33kV Cable Size
Due to the high voltage and thick insulation, 33kV cables are larger and heavier overall, requiring higher costs; installation is more complex in terms of space and labor, and often requires specialized tools and higher standards of construction conditions.
例子:
物品 | 11kV 1×240mm² | 33kV 1×240mm² |
Conductor Cross Section | 240 平方毫米 | 240 平方毫米 |
导体直径 | ≈ 17.6 毫米 | ≈ 17.6 毫米 |
Insulation thickness | 5.5 毫米 | 8.0 毫米 |
电缆重量 | ≈ 2.2 kg/m | ≈ 2.8 kg/m |
About ZMS Cable
ZMS Cable has more than 30 years of experience in manufacturing medium voltage cables, since 1990, our factory has been in the leading position in medium voltage cable technology, has supplied medium voltage cables for power projects in many countries around the world, and enjoys a good reputation in the Middle East, 东南亚, 非洲, ETC. ZMS电缆, as an excellent cable supplier, will always implement the principle of “customer first” to carry out the work to ensure that each order can be delivered without fail. ZMS电缆, as an excellent cable supplier, will carry out its work on the principle of “Customer First” to ensure that every order can be delivered without fail.
ZMS Cable Services
质量认证
VERI Cables生产的产品符合GB等国际标准, 国际电工委员会, 学士, 近场通信, 美国材料试验协会, 从, ETC. 而且, 我们的技术团队可以根据您的需求提供电缆定制服务.
客户追踪
VERI提供免费专业电缆咨询服务, 一站式项目解决方案服务, 和快速的产品交付解决方案.
专业运输
维瑞电缆’ 最初的目标是确保产品快速安全的交付，同时也提供最佳的包装和运输解决方案，以减少客户’ 运输成本很大.
电缆包装
VERI 电缆包装采用木卷轴提供, 瓦楞纸箱, 和线圈. 端部采用BOPP自粘带和不吸湿密封帽密封，保护电缆端部免受潮湿. 我们可以根据客户的要求在防水材料的桶外面印刷所需的标志.