This part of GB/T 24338 specifies the emission and immunity requirements of electromagnetic compatibility (EMC) for electrical and electronic apparatus intended for use on railway rolling stock. This part is applicable to the integration of apparatus on rolling stock.
The frequency range considered is from d.c. to 400 GHz. No measurements need to be performed at frequencies where no requirement is specified.
The application of tests shall depend on the particular apparatus, its configuration, its ports, its technology and its operating conditions.
This part takes into account the internal environment of the railway rolling stock and the external environment of the railway, and interference to the apparatus from equipment such as hand-held radio transmitters.
The radiation emission requirements specified in this part does not apply to intentional emission of radio transmitter defined by ITU.
The limits for immunity are not applicable to the excluded frequency bands specified in the EMC related standards for wireless devices.
This part does not apply to transient emissions when starting or stopping the apparatus.
Emission requirements have been selected so as to ensure that disturbances generated by the apparatus operated normally on railway rolling stock do not exceed a level which could prevent other apparatus from operating as intended.
Likewise, the immunity requirements have been selected so as to ensure an adequate level of immunity for rolling stock apparatus. The levels do not however cover extreme cases which may occur with an extremely low probability of occurrence in any location. Specific requirements which deviate from this part shall be specified.
Test requirements are specified for each port considered.
These specific provisions are to be used in conjunction with the general provisions in GB/T 24338.1.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 4365 Electrotechnical Terminology — Electromagnetic Compatibility [GB/T 4365-2003, IEC 60050(161):1990, IDT]
GB/T 6113.101 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods — Part 1-1: Radio Disturbance and Immunity Measuring Apparatus — Measuring Apparatus (GB/T 6113.101-2016, CISPR 16-1-1:2010, IDT)
GB/T 6113.104 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods — Part 1-4: Radio Disturbance and Immunity Measuring Apparatus — Antennas and Test Sites for Radiated Disturbance Measurements (GB/T 6113.104-2016, CISPR 16-1-4:2012, IDT)
GB/T 6113.201 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods — Part 2-1: Methods of Measurement of Disturbances and Immunity — Conducted Disturbance Measurements (GB/T 6113.201-2017, CISPR 16-2-1:2010, IDT)
GB/T 6113.203 Specification for Radio Disturbance and Immunity Measuring Apparatus and Methods — Part 2-3: Methods of Measurement of Disturbances and Immunity — Radiated Disturbance Measurements (GB/T 6113.203-2016, CISPR 16-2-3:2010, IDT)
GB/T 9254 Information Technology Equipment — Radio Disturbance Characteristics — Limits and Methods of Measurement (GB/T 9254-2008, IEC/CISPR 22:2006, IDT)
GB/T 17626.2 Electromagnetic Compatibility — Testing and Measurement Techniques- Electrostatic Discharge Immunity Test (GB/T 17626.2-2006, IEC 61000-4-2:2001, IDT)
GB/T 17626.3 Electromagnetic Compatibility — Testing and Measurement Techniques — Radiated Radio-frequency Electromagnetic Field Immunity Test (GB/T 17626.3-2016, IEC 61000-4-3:2010, IDT)
GB/T 17626.4 Electromagnetic Compatibility — Testing and Measurement Techniques — Electrical Fast Transient/Burst Immunity Test (GB/T 17626.4-2008, IEC 61000-4-4:2004, IDT)
GB/T 17626.5 Electromagetic Compatibility — Testing and Measurement Techniques — Surge (Impact) Immunity Test (GB/T 17626.5-2008, IEC 61000-4-5:2005, IDT)
GB/T 17626.6 Electromagetic Compatibility — Testing and Measurement Techniques — Immunity to Conducted Disturbances, Induced by Radio-frequency Fields (GB/T 17626.6-2017, IEC 61000-4-6:2013, IDT)
GB/T 17626.30 Electromagnetic Compatibility — Testing and Measurement Techniques — Power Quality Measurement Methods
GB 17799.4-2012 Electromagnetic Compatibility (EMC) — Generic Standards — Emission Standard for Industrial Environments (IEC 61000-6-4:2011, IDT)
GB/T 24338.1-2018 Railway Applications — Electromagnetic Compatibility — Part 1: General (IEC 62236-1:2008, MOD)
GB/T 24338.3 Railway Applications — Electromagnetic Compatibility — Part 3-1: Rolling Stock — Train and Complete Vehicle (GB/T 24338.3-2018, IEC 62236-3-1:2008, MOD)
GB/T 25119 Railway Applications — Electronic Equipments Used on Rail Vehicles
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 4365 and the following apply.
3.1
rolling stock apparatus
finished product with an intrinsic function intended for implementation into the rolling stock installation
3.2
port
the particular interface of the specified apparatus with the external environment, for example a.c. power port, d.c. power port, I/O (input/output) port
3.3
enclosure port
the physical boundary of the apparatus through which electromagnetic fields may radiate or impinge (see Figure 1). Typical examples of rolling stock apparatus with their ports are listed in Annex A.
GB/T 24338.4-2018 The following standards are cited：
