GB/T 24338.4-2018Railway applications -- Electromagnetic compatibility -- Part 3-2: Rolling stock -- Apparatus (English PDF)

Foreword

GB/T 24338 "Railway applications - Electromagnetic compatibility" consists of

the following parts.

- Part 1.General;

- Part 2.Emission of the whole railway system to the outside world;

- Part 3-1.Rolling stock - Train and complete vehicle;

- Part 3-2.Rolling stock - Apparatus;

- Part 4.Emission and immunity of the signaling and telecommunications

apparatus;

- Part 5.Emission and immunity of fixed power supply installations and

apparatus.

This part is part 3-2 of GB/T 24338.

This part was drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces GB/T 24338.4-2009 "Railway applications - Electromagnetic

compatibility - Part 3-2.Rolling stock - Apparatus". As compared with GB/T

24338.4-2009, the main technical changes are as follows.

- ADD the requirements of the test report (see clause 5);

- ADD the measurement requirements, CLARIFY that frequencies that are

not required are not tested (see clause 1);

- ADD the general EMC requirements (see clause 6);

- DELETE the measurement requirements for the emission of 9 kHz ~ 0.15

MHz from the Table (see clause 7 of the 2009 version);

- DELETE the Tables 1 and 2 (see clause 7 of the 2009 version);

- MODIFY the Table 3, CHANGE the public AC power supply requirements

from the note of the Table to the Table entry requirements (see Table 1;

Table 3 of the 2009 version);

- DELETE the Table 5 (see clause 7 of the 2009 version);

- MODIFY the surge test requirements of Table 7 (see Table 4; Table 7 of the

2009 version);

- MODIFY the test level of Table 9 (see Table 6; Table 9 of the 2009 version);

- ADD the footnote a that for the apparatus at specific location, it may reduce

the severity requirements to 10 V/m (see Table 6).

This part uses the redrafting method to modify and use the IEC 62236-3-2.2008

"Railway applications - Electromagnetic compatibility - Part 3-2.Rolling stock -

Apparatus".

There are technical differences between this part and IEC 62236-3-2.2008.The

terms involved in these differences have been marked by the vertical single line

(|) in the outer margin position. The specific technical differences and their

causes are as follows.

- Regarding the normative references, this part has made adjustments with

technical differences, to adapt to the technical conditions of China. The

adjustments are concentrated in clause 2 "Normative references". The

specific adjustments are as follows.

- Use the GB/T 6113.101, GB/T 6113.104, GB/T 6113.201, and GB/T

1 Scope

This part of GB/T 24338 specifies the emission and immunity requirements for

electromagnetic compatibility of electrical and electronic apparatus for railway

rolling stock. This part applies to integration of apparatus on rolling stock.

The frequency range considered in this part is from 0 GHz ~ 400 GHz.

2 Normative references

The following documents are essential to the application of this document. For

the dated documents, only the versions with the dates indicated are applicable

to this document; for the undated documents, only the latest version (including

all the amendments) are applicable to this standard.

3 Terms and definitions

The terms and definitions as defined in GB/T 4365 as well as the following terms

and definitions apply to this document.

The physical boundary of the apparatus through which electromagnetic

fields may radiate or impinge (see Figure 1). See Appendix A for a typical

example.

4 Performance criteria

The functional description and the determination of the performance criteria

during or after the electromagnetic compatibility (EMC) test shall be provided

by the manufacturer in accordance with the criteria A, B and C as specified in

GB/T 24338.1-2018, they shall be indicated in the test report.

5 Test conditions

Electromagnetic compatibility test of each function of the apparatus is generally

not possible, it shall be tested under typical conditions approved by the

manufacturer (on-site conditions where the simulated apparatus produces

maximum emissions or maximum sensitivity to noise).

6 Emission test and limits

The emission test and limits are specified in accordance with the port type. See

Table 1 ~ Table 3 for details.

7 Immunity test and limits

This clause specifies the immunity test and limits in accordance with the port

type. See Table 4 ~ Table 6 for details.

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