Technical characteristics of high-voltage three-phase lines for electric vehicles

Description: The technical characteristics of high-voltage three-phase lines for electric vehicles (usually as part of high-voltage wiring harnesses) are mainly reflected in the following aspects:

1. High voltage:
Voltage range: New energy vehicles generally operate in the B-level voltage range, and high-voltage wiring harnesses need to meet the operating voltage range requirements of 60V-1500V. According to the provisions of GB/T 184384.3 for Class B voltage, it is usually AC30V-1000V or DC60V-1500V. As a key part of power transmission, the high-voltage three-phase line of electric vehicles also needs to withstand such high voltage.

2. High current:
Current load: The motor of an electric vehicle requires a large amount of current to operate normally, so the high-voltage three-phase line must be able to withstand a large current load. The rated operating current of the DC bus can usually reach more than 200A, or even higher, to ensure efficient transmission and stability of electric energy.

5. Electromagnetic compatibility (EMC):
Electromagnetic shielding: High-voltage three-phase wiring harnesses need to have good electromagnetic compatibility performance to effectively shield external electromagnetic interference and ensure that the wiring harness itself does not generate electromagnetic interference to the outside world. This helps to ensure the stability and reliability of the high-voltage electrical system.

6. Durability:
Long-term stability: High-voltage three-phase wiring harnesses need to have high durability and be able to maintain stable electrical and mechanical properties during long-term use. This includes the ability to resist frequent bending, vibration and other factors to ensure the long-term reliability of the wiring harness.

7. Safety:
Electrical safety: High-voltage three-phase wiring harnesses need to have high safety performance to prevent electrical systems from leakage, short circuits and other faults. This includes the use of high-quality insulating materials, reasonable wiring harness layout and connection methods, etc., to ensure the safe operation of the electrical system.

In summary, the technical characteristics of electric vehicle high-voltage three-phase lines are mainly reflected in high voltage, high current, sealing, heat resistance, electromagnetic compatibility, durability, safety and high-voltage connector characteristics. These characteristics together ensure the stable, reliable and safe operation of electric vehicle high-voltage electrical systems.

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