National Standard DC Electric Vehicle Charging Cable (105°C)

Executive Standards
This product series strictly complies with relevant national and industry technical standards:
- GB/T 33594-2017: "Cables for electric vehicle charging", specifying the basic construction, electrical performance, and physical and mechanical property requirements for charging cables.

Model Code Definitions
The product model uses specific designations to reflect its functional construction and temperature rating:
- EVDC: Represents Electric Vehicle Direct Current charging.
- (R): Indicates that the conductor is of flexible construction (stranded fine copper wires), ensuring the cable has good bending flexibility.
- EYS90: Represents a specific combination of insulation and sheath materials, corresponding to a temperature rating requirement of 105 °C in this model system.

Product Specification Range
The cable adopts a composite core construction, integrating various cores such as power, earthing, auxiliary power supply, and signal control to meet the requirements of complex charging protocols:
- Main power cores: 2 cores, cross-section range 10 mm² – 95 mm², used for high-current DC transmission.
- Earth core: PE core, ensuring system earthing safety.
- Auxiliary power cores: 2 cores, cross-section range 4 mm² – 6 mm², used for vehicle low-voltage auxiliary power supply.
- Signal or control cores: 4 cores – 12 cores, cross-section range 0.75 mm² – 2.5 mm², optionally equipped with shielding (P) or double shielding (P2) construction, used for BMS communication and charging control.

Core Technical Parameters
1. Rated voltage: 1000 V.
2. Rated temperature: Maximum continuous operating temperature is 105 °C.
3. Electrical performance: Features very low conductor DC resistance and high insulation resistance, passing stringent AC voltage withstand and power-frequency voltage tests.
4. Environmental adaptability: The sheath possesses outstanding weather resistance and chemical oil resistance, and can maintain structural integrity under frequent dragging and bending.

Product Structural Characteristics
- Composite integrated construction: Organically combines power wires, signal wires, and control wires, reducing the complexity of external connections and improving the portability of the charging connector.
- High-coverage shielding system: The signal cores can be equipped with a metallic shielding construction, effectively suppressing electromagnetic interference generated by DC pulses and ensuring the accuracy of data communication.
- Specialty temperature-resistant materials: Modified elastomer or thermoplastic polyolefin materials are used, which not only have a high temperature rating but also offer comfortable tactile feel and strong ageing resistance, capable of withstanding long-term outdoor exposure and severe cold.

Applicable Scenarios
- Public fast charging stations: High-power DC charging piles for commercial operation.
- Bus/logistics park charging hubs: Addressing the frequent, high-intensity DC charging needs of operating vehicles.
- Private/corporate parking spaces: Fixed charging facilities with DC fast charging capability.

Installation and Maintenance Recommendations
- Bending control: Although the cable has good flexibility, sharp bends smaller than the minimum bending radius should be avoided when the charging connector is hung or coiled to extend cable life.
- Insulation monitoring: The DC fast charging voltage is very high. Periodically check the cable outer sheath for damage or wear to prevent leakage risks.
- Current-carrying capacity matching: When selecting, strictly match the main core cross-section of the corresponding specification according to the rated current output of the charging pile to ensure temperature rise is controlled under high-load operation.