GB/T 39426-2020 in English
VALIDGeneral technical specification for permanent magnetic direct drive motor vehicles of urban rail transit
- Issued on:2020-11-19
- Implemented on:2021-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$250.00
$243.00
$243.00
《GB/T 39426-2020城市轨道交通永磁直驱车辆通用技术条件》由TC290（全国城市轨道交通标准化技术委员会）归口，主管部门为住房和城乡建设部。
Introduction
Interpretation of the core content of the standard
| Technical Dimensions | Permanent Magnet Direct Drive Type A Vehicle | Permanent Magnet Direct Drive Type B Vehicle |
|---|---|---|
| Vehicle Body Length (mm) | 22800/21880 | 19520/19000 |
| Vehicle Body Width (mm) | 3000 | 2800 |
| Axle Weight (t) | ≤16 | ≤14 |
Key technical requirements
Permanent magnet direct drive motor must meet the following requirements: IP54 protection level, 93% rated efficiency, 40mT surface magnetic leakage limit. Rare earth permanent magnet materials are used, and the bearing life is ≥2.5 million kilometers.
Bogies are divided into Class I (rigid axle holding, ≤80km/h) and Class II (elastic axle holding, ≤120km/h), and must be equipped with ground return devices.
Safety and performance indicators
- Emergency braking deceleration ≥1.2m/s²
- Slope start is still possible when 1/2 power is lost under AW3 working conditions
- Noise control: passenger compartment ≤69dB(A) in static state
Implementation suggestions
- Preferably use SiC power devices to improve converter efficiency
- The motor cooling system needs to match the line ambient temperature (-25℃~45℃)
- The TCMS system should realize real-time monitoring of the motor status
Sample only — not a preview of GB/T 39426-2020
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