National Standard AC Electric Vehicle Charging Cable (90°C)

Executive Standards
- GB/T 33594-2017: "Cables for electric vehicle charging" (core national standard).

Model Code Definitions
- EV: Electric vehicle charging cable series code.
- R: Flexible conductor construction (stranded fine copper wires).
- S / S90: Insulation and sheath material code (generally elastomer or synthetic rubber; 90 indicates a rated operating temperature of 90 °C).
- P / P2: Shielding construction for control or signal cores (P is copper wire braided shield, P2 is copper tape wrapped shield).

Product Specification Range
The conductor uses high-quality annealed oxygen-free copper, with specification design covering the full power range of household and commercial AC charging:
- Main power core and earth core specifications: (3–5) cores × (1.0–70) mm².
- Signal or control core specifications: (1–4) cores × (0.5–1.5) mm² (usually with shielding construction to prevent interference).

Core Technical Parameters
1. Rated voltage (U₀/U): 450/750 V.
2. Rated operating temperature: The maximum continuous permissible conductor operating temperature is 90 °C.
3. Minimum bending radius: Typically not less than 6 times the overall cable diameter. It offers very good flexibility, convenient for users to extend and retract during charging.
4. Environmental adaptability:
   - Oil resistance: Effectively resists erosion by gasoline, diesel, and various automotive maintenance fluids.
   - UV resistance: Passes a 1008-hour xenon lamp ageing test, ensuring no cracking or discolouration during long-term outdoor exposure.
   - Low-temperature resistance: Maintains good elasticity and handling feel even in severely cold environments.

Cable Structural Characteristics
- High-flexibility conductor: Uses Class 5 or Class 6 highly stranded fine copper wires, allowing the cable to maintain conductive integrity after tens of thousands of flexing cycles.
- Composite functional construction: Integrates power transmission, earth protection, and BMS signal feedback functions within a single cable, achieving an all-in-one connection for charging and communication.
- Effective anti-interference shielding: A high-coverage metallic shielding layer (P/P2) configured for the control cores effectively blocks external electromagnetic field interference on vehicle control commands.
- Specialty environmentally friendly protection: Both insulation and sheath use environmentally friendly low-smoke zero-halogen materials, releasing no toxic gases during combustion. The outer sheath has a fine, slip-resistant, and abrasion-resistant feel.

Applicable Scenarios
- Public facilities: AC charging piles in urban commercial areas, office building car parks, and highway service areas.
- Home private charging: Wall-mounted charging piles, portable mobile charging cables.
- Vehicle inlet interconnection: Connection wiring from the charging port inside the electric vehicle to the battery management system.

Product Advantages and Selection Recommendations
1. High safety: Strictly implements the GB/T 33594 standard, with sound leakage protection, flame spread resistance, and crush resistance.
2. Very easy handling: Lightweight and very flexible design. Even large cross-section specifications (such as 70 mm²) allow easy plugging, unplugging, and coiling by users.
3. Long-life design: Targeted protection optimization against dragging, ground friction, and direct sunlight during the charging process, with a design for long service life.
4. Selection reminder: When selecting specifications, match the corresponding main core cross-section according to the output power of the charging pile (e.g., 7 kW, 22 kW, etc.), and verify the number of control cores to ensure compatibility with the vehicle BMS protocol.