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Net Zero Emissions is a global trend, and the electric vehicle and energy storage industries are at the forefront of this green energy wave. High-voltage cables, as a core component in both fields, will be thoroughly explored in this article, focusing on the key advantages of the high-voltage cables we produce.
High-voltage cables, also known as high-tension cables or HV cables, are used to transmit high-voltage electrical power. Typically, the voltage level of high-voltage cables is 1000V or higher, encompassing different levels like medium voltage, high voltage, extra-high voltage, and ultra-high voltage.
Low voltage usually refers to voltages below 1kV. It is commonly used in homes, businesses, and smaller industrial applications. Common examples include 110V and 220V.
Voltages between 1kV and 33kV fall into the medium voltage category. Medium voltage is commonly found in industrial settings, large commercial facilities, and some power plants.
High voltage is mainly used in power transmission and distribution systems, including cables, substations, and power grids.
The structure of high-voltage cables primarily involves conductors and insulation. Additional shielding layers and outer jackets may be added based on the specific application and environmental conditions.
Common conductor materials include copper (Cu) and aluminum (Al). They have excellent conductivity and corrosion resistance, making them suitable for high-voltage environments. Conductors are usually designed in round or flat shapes based on the wire's purpose and current requirements.
Common insulation materials include polyethylene (PE), cross-linked polyethylene (XLPE), rubber, and more. These materials effectively block electrical currents, preventing leakage and short circuits.
Advantages of the XLPE insulation used in Good Gi high-voltage cables:
The shield is typically made of materials with good conductivity, such as copper wire braiding or copper foil. It is used to reduce the impact of external electromagnetic interference on the cable.
As the name suggests, the outer sheath is the outermost layer of the cable. It is made of durable materials like polyvinyl chloride (PVC) or polyethylene (PE), providing resistance to wear, oil, water, and weather.
Primarily used in the power system of electric vehicles, transmitting power to drive electric motors. This includes connections between the battery and electric motor, as well as various control systems within the vehicle. High-voltage cables play a crucial role in electric vehicles, directly impacting performance, efficiency, and safety.
Requirements for Electric Vehicle High-Voltage Cables:
High-voltage cables in electric vehicles must endure high-voltage environments and resist prolonged wear and tear.
Due to the nature of high voltage, the cable's insulation material must provide excellent insulation to prevent current leakage.
In electric vehicle power systems, high-voltage cables often face high-temperature conditions and need to operate stably over extended periods.
Electric vehicles tend to be heavier than traditional fuel vehicles. Reducing the weight of high-voltage cables helps decrease energy consumption, potentially improving driving range and enhancing maneuverability and acceleration.
Fire incidents in electric vehicles pose a serious safety risk and are challenging to extinguish. Therefore, flame retardancy is a fundamental and essential requirement for electric vehicles.
3820 electric vehicle high-voltage cables - 1000V
3886 electric vehicle high-voltage cables - 1500V
Primarily used in energy storage systems, especially in energy storage cabinets or systems, to connect batteries, inverters, and power management systems. These wires play a crucial role inside energy storage cabinets, assisting in the storage, conversion, and distribution of energy.
Requirements for Energy Storage Cabinet High-Voltage Cables:
High-voltage cables used in energy storage cabinets must withstand high voltage while ensuring efficient power transmission to maintain the system's performance.
Given the frequent charge and discharge cycles in energy storage cabinet operations, corresponding high-voltage cables need to exhibit good durability to withstand prolonged use.
Similar to high-voltage cables in electric vehicles, those in energy storage cabinets require excellent insulation performance to prevent current leakage and loss.
Energy storage cabinets may operate under various environmental conditions. Therefore, high-voltage cables need to adapt to different temperatures, humidity levels, and chemical environments.
Energy storage cabinets contain high-energy-density battery systems, and in case of accidents, there is a risk of fire. Hence, the cables need to possess fire-resistant and flame-retardant properties to enhance system safety and reduce the risk of fire spread.
3820 energy storage high-voltage cables - 1000V
3886 energy storage high-voltage cables - 1500V
Good Gi manufactures high-voltage cables that meet the UL 3820 and UL 3886 certification standards. Led by Underwriters Laboratories (UL), these standards have strict safety and performance requirements to ensure the stability and reliability of the cables during use. The testing standards for UL 3820 and UL 3886 are provided below:
Rating ： 125 deg C, 1500 Vac, Horizontal flame.
Conductor ： 44 AWG - 2000 kcmil, solid or stranded.
Insulation ： XLPE, 30 mils minimum average thickness, 27 mils minimum thickness at any point.
Standard ： Appliance Wiring Material UL 758.
Rating： 125 deg C, 1000 Vac Horizontal flame.
Conductor： 30 - 2000 kcmil, solid, stranded, or braided, tinned, bare or silver-plated copper or solid or stranded coated high strength copper - minimum 90 percent conductivity.
Insulation： Extruded XLPE.
| Conductor size | Min average thickness (mils) | Min at any point thickness (mils) |
|---|---|---|
| 30-9 AWG | 30 | 27 |
| 8-2 AWG | 45 | 40 |
| 1-4/0 AWG | 55 | 50 |
| 213-500 kcmil | 65 | 58 |
| 501-1000 kcmil | 80 | 72 |
| 1001-2000 kcmil | 95 | 86 |
Standard：Appliance Wiring Material UL 758.
When selecting high-voltage cables like UL 3886 or UL 3820, a comprehensive assessment based on specific application requirements is necessary. Here are key points to consider:
Through a comparison of the above UL certification standards, we can identify the main distinctions between UL 3886 and UL 3820 in terms of rated voltage and insulation thickness.
UL 3886: It has a higher rated voltage and a thinner insulation layer. This makes it suitable for internal wiring in electric vehicles, allowing flexibility in tight spaces. Compared to the thicker insulation of UL 3820, the thinner insulation of UL 3886 contributes to a lighter overall weight.
UL 3820: It has a thicker insulation layer, offering excellent wear resistance. As there are no specific tests for wear resistance in UL standards, when assessing application environments, users are advised to consider installation conditions and construction situations.
Choosing between UL 3886 and UL 3820 high-voltage cables requires understanding their differences and evaluating based on specific application needs. Our team, with extensive industry experience, can provide the most suitable solutions for your requirements. Contact us now!