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Railway applications -- Electromagnetic compatibility -- Part 4: Emission and immunity of the signalling and telecommunications apparatus
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GB/T 24338.5-2018: PDF in English (GBT 24338.5-2018) GB/T 24338.5-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.280
S 35
Replacing GB/T 24338.5-2009
Railway applications - Electromagnetic compatibility -
Part 4. Emission and immunity of the signalling and
telecommunications apparatus
(IEC 62236-4.2008, MOD)
ISSUED ON. JUNE 7, 2018
IMPLEMENTED ON. JANUARY 1, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3
1 Scope ... 8
2 Normative references ... 9
3 Terms and definitions ... 10
4 General ... 11
5 Emission limits ... 12
6 Performance criteria and test requirements for immunity test ... 12
References ... 17
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.
3.1 Port
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
6.1 Performance criteria
The apparatus covered in this Part is diverse and it is difficult to give accurate
performance criteria for immunity test results. Therefore, unless otherwise
specified, the requirements of performance criteria shall be subject to GB/T
24338.1.
6.2 Test requirements
This Part specifies the immunity requirements based on each port of the
apparatus.
It shall, under clear and repeatable test conditions, carry out the tests item by
item. The test sequence can be selected. SEE Table 1 ~ Table 5 for the test
conditions, environmental disturbances, test methods, and test configurations
specified in the basic standards. If the apparatus has a large number of ports
with similar electrical characteristics or similar connections, it shall select a
sufficient number of ports (for example, SELECT 20% of the total number of
ports or at least 4 ports), to simulate on-site working conditions and ensure that
all different types of ports are covered.
The content of the basic standards is not repeated, but the additional
information required for the actual process of the test is given here.
Traction current induced voltage is not considered in this Part.
Note. The relevant traction current induced voltage is specified by the apparatus’s
technical specifications.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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