GB/T 24338.5-2018Railway applications -- Electromagnetic compatibility -- Part 4: Emission and immunity of the signalling and telecommunications 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 signalling and telecommunications

apparatus;

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

systems.

This Part is Part 4 of GB/T 24338.

This Part is drafted in accordance with the rules given in GB/T 1.1-2009.

This Part replaces GB/T 24338.5-2009 "Railway applications - Electromagnetic

compatibility - Part 4. Emission and immunity of the signalling and

telecommunications apparatus". As compared with GB/T 24338.5-2009, the

main technical changes are as follows.

- ADD description of inapplicability to faulty apparatus (SEE Chapter 1;

Chapter 1 of the 2009 version);

- DELETE the description of power port emission (SEE Chapter 1 of the 2009

version);

- ADD a normative reference of GB/T 4365;

- CHANGE enclosure-cabinet port in the "Terms and definitions" to enclosure

port (SEE 3.2; 3.2 of the 2009 version);

- ADD definitions of "3 m zone" and "10 m zone" (SEE 3.3 and 3.4);

- ADD a normative reference of GB/T 24338.6 (SEE Chapter 1);

- ADD the description in Chapter 4 that frequency without specified

requirements is not tested (SEE Chapter 4);

- DELETE instructions for executive standards for apparatus in non-railway

(|) at the blank of the outer margin. The specific technical differences and their

reasons are as follows.

- About normative references, this Part has made adjustments with technical

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

are reflected in Chapter 2 "Normative references", as follows.

 REPLACE IEC 61000-3-2 with GB 17625.1 identical to the

international standard;

 REPLACE IEC 61000-3-3 with GB 17625.2 identical to the

international standard;

 REPLACE IEC 61000-6-2 with GB/T 17799.2 identical to the

international standard;

 REPLACE IEC 61000-6-4 with GB/T 17799.4 identical to the

international standard;

 REPLACE IEC 61000-4-2 with GB/T 17626.2 identical to the

international standard;

 REPLACE IEC 61000-4-3 with GB/T 17626.3 identical to the

international standard;

 REPLACE IEC 61000-4-4 with GB/T 17626.4 identical to the

international standard;

 REPLACE IEC 61000-4-5 with GB/T 17626.5 identical to the

international standard;

 REPLACE IEC 61000-4-6 with GB/T 17626.6 identical to the

international standard;

 REPLACE IEC 61000-4-8 with GB/T 17626.8 identical to the

international standard;

 REPLACE IEC 61000-4-9 with GB/T 17626.9 identical to the

international standard;

 REPLACE IEC 62236-1 with GB/T 24338.1 which uses the

international standard by modification;

 REPLACE IEC 62236-3-2 with GB/T 24338.4 which uses the

international standard by modification;

 ADD reference to GB/T 4365;

Railway applications - Electromagnetic compatibility -

Part 4. Emission and immunity of the signalling and

telecommunications apparatus

1 Scope

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

performance criteria of signalling and telecommunications apparatus (hereafter

abbreviated as "apparatus") in the railway environment.

This Part applies to the apparatus included in GB/T 24338.4 being installed in

the railway environment and working normally, and the telecommunications

signalling data line and power line connected to the apparatus under test.

The emission and immunity requirements of on-board signalling and

telecommunications apparatus are specified by GB/T 24338.4. The emission

and immunity requirements of signalling and telecommunications apparatus

installed in the substation and connected to the substation are specified by

GB/T 24338.6. The electromagnetic compatibility requirements of apparatus

within the scope of GB 17625.1 or GB/T 17625.2 are specified by GB 17625.1

or GB/T 17625.2.

If the emission of the apparatus meets the emission limits specified in GB

17799.4, as long as the emission of any DC power port is less than the specified

emission limits of AC power port, it also complies with the provisions of this Part.

The immunity requirements specified in this Part apply to.

- Key apparatus, such as interlock system and signalling control system;

- Apparatus in 3 m zone;

- Apparatus in 10 m zone with ports connected to apparatus in 3 m zone;

- Apparatus in 10 m zone with more than 30 m of cable connected.

Apparatus not covered above shall comply with the provisions of GB/T 17799.2.

The immunity level specified for the apparatus in this Part allows the apparatus

to operate properly in the railway environment in most cases. When the

apparatus is directly exposed to interference, or the cable connected to it

receives interference from the RF field of disturbance source or coupled

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 Electromagnetic compatibility - Testing and measurement

techniques - Surge immunity test (GB/T 17626.5-2008, IEC 61000-4-5.2005,

IDT)

GB/T 17626.6 Electromagnetic 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 17626.8 Electromagnetic compatibility (EMC) - Part 8. Testing and

measurement techniques - Power frequency magnetic field immunity test

(GB/T 17626.8-2006, IEC 61000-4-8.2001, IDT)

GB/T 17626.9 Electromagnetic compatibility - Testing and measurement

techniques - Pulse magnetic field immunity test (GB/T 17626.9-2011, IEC

61000-4-9.2001, IDT)

GB/T 17799.2 Electromagnetic compatibility - Generic standards - Immunity

for industrial environments (GB/T 17799.2-2003, IEC 61000-6-2.1999, IDT)

GB 17799.4 Electromagnetic compatibility (EMC) - Generic standards -

Emission standard for industrial environments (GB 17799.4-2012, IEC

61000-6-4.2011, IDT)

GB/T 24338.1 Railway applications - Electromagnetic compatibility - Part 1.

General (GB/T 24338.1-2018, IEC 62236-1.2008, MOD)

GB/T 24338.4 Railway applications - Electromagnetic compatibility - Part 3-

2 Rolling stock - Apparatus (GB/T 24338.4-2018, IEC 62236-3-2.2008, MOD)

GB/T 24338.6 Railway applications - Electromagnetic compatibility - Part 5.

Emission and immunity of fixed power supply apparatus and systems (GB/T

24338.6-2018, IEC 62236-5.2008, MOD)

3 Terms and definitions

What defined in GB/T 4365 and the following terms and definitions are

applicable to this document.

5 Emission limits

The maximum emission of the apparatus shall meet GB 17799.4. The

conducted emission limits shall be applicable to both the AC power port and the

DC power port.

6 Performance criteria and test requirements for

immunity test