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GB/T 17619-1998 PDF in English

GB/T 17619-1998 (GB/T17619-1998, GBT 17619-1998, GBT17619-1998)
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GB/T 17619-1998: PDF in English (GBT 17619-1998)

GB/T 17619-1998
ICS 33.100
L 06
National Standard
of the People’s Republic of China
Limits and methods of testing for immunity of
electrical / electronic sub-assemblies in vehicles to
electromagnetic radiation
Issued by. State Quality Technical Supervision Bureau
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Definitions ... 4 
4 Immunity limit ... 6 
5 Measurement requirements ... 6 
6 ESA condition during test ... 6 
7 Frequency range and withstanding time ... 7 
8 Test signal characteristics ... 7 
9 Measurement methods ... 8 
Annex A ... 17 
Annex B ... 21 
Annex C ... 22 
Annex D ... 24 
With the development of vehicle industry, the degree of vehicle electronization is
increasingly enhanced, which correspondingly sets requirements for the vehicle
electromagnetic compatibility. The formulation of this Standard sets technical requirements
for the electromagnetic immunity of electrical / electronic sub-assemblies in vehicles, so as
to increase safety, reliability, and electromagnetism immunity of vehicle operation.
This Standard adopts the relevant content of European Economic Community Directive
95/54/EC (1995) "Vehicle Electromagnetic Compatibility". The immunity limit equivalently
adopts the immunity limit about the electrical / electronic sub-assemblies installed in
vehicles in Annex 1. The measuring method equivalently adopts the measuring method of
electromagnetic radiation immunity of electrical / electronic sub-assemblies in vehicles.
Thus, it enables the vehicle electromagnetic compatibility national standard of China to
adapt, as soon as possible, to the international trade, economic and technical exchange
as well as the fast growth of overseas advanced standard.
Annex A, Annex B, Annex C, and Annex D of this Standard are normative.
This Standard was proposed by and shall be under the jurisdiction of the National Technical
Committee of Radio Interference Standardization.
Responsible drafting organizations of this Standard. China automotive Technology &
Research Center, and Shanghai Electrical Apparatus Research Institute.
Participating drafting organizations of this Standard. China Electronic Standardization
Institute, and FAW-VOLKSWAGEN Automotive Co., Ltd..
Main drafters of this Standard. Xu Li, Lou Dingfu, Chen Li, and Pan Shaojie.
Limits and methods of testing for immunity of
electrical / electronic sub-assemblies in vehicles to
electromagnetic radiation
1 Scope
This Standard specifies the limits and methods of testing for electromagnetic radiation
immunity of electrical / electronic sub-assemblies (ESA) in vehicles.
This Standard applies to the electrical / electronic sub-assemblies in vehicles.
2 Normative references
The articles contained in the following standards become the articles of this Standard
through reference in this Standard. When this Standard is published, all shown editions
are effective. All standards can be revised. All parties who use this Standard are
encouraged to explore the possibility of using the latest edition of the following standards.
GB/T 4365-1995 Terminology for electromagnetic compatibility
GB/T 6113.1-1995 Specifications for radio disturbance and immunity measuring
3 Definitions
This Standard adopts the following definitions.
3.1 Electromagnetic compatibility (EMC)
The ability of equipment or system that can work normally in its electromagnetic
environment and does not cause such electromagnetic disturbance to any thing in this
environment that they cannot withstand.
3.2 Electromagnetic disturbance
Any electromagnetic phenomenon which may cause performance reduction of device,
equipment or system, or harm to living or lifeless substances. The electromagnetic
disturbance can be the change of electromagnetic noise, unwanted signal or media itself.
3.3 Immunity (to a disturbance)
The ability of device, equipment or system that will not reduce the operating performance
when encountering electromagnetic disturbances.
3.4 Electromagnetic environment
The sum of all electromagnetic phenomenon that is existed in the given site.
3.5 Immunity limit
The specified minimum immunity electrical level.
3.6 Reference antenna
Within 20MHz~80MHz, it refers to the short-balanced dipole antenna that is half-wave
resonance dipole at 80MHz. Above 80MHz, it refers to the balanced half-wave resonance
dipole which is tuned at the measuring frequency.
3.7 Shielded enclisure [Translator. enclosure]
Screen-grid or overall metal enclosed chamber which is specially designed to insulate
indoor and outdoor electromagnetic environment. Its purpose is to prevent the outdoor
electromagnetic field to interfere indoor environment, and to prevent various outdoor
electromagnetic activities to generate interference emission.
3.8 Semi-anechoic chamber
The shield enclosure of which the internal surfaces, except floor, are installed with
absorbing materials.
3.9 Electrical / electronic sub-assembly (ESA)
Electrical / electronic equipment or equipment-group which can realize one or more specific
function(s), including electrical connectors and wires. ESA can be inspected as "Parts-
components" or "Separate technical unit (STU)" as required by the manufacturer.
3.10 ESA type
ESA types related to electromagnetic compatibility must have no essential difference in the
following aspects.
working voltage; any fluctuated voltage measured in the monitoring port of artificial network
shall be less than 1.5% of the nominal value of system working voltage.
6.3 When calibrating, place the auxiliary equipment that are required by ESA’s operation
according to the specification. And the distance between the auxiliary equipment and the
reference point must not be less than 1m.
6.4 In order to guarantee to obtain repeatable test results, the technical conditions used in
test signal generating device and its line configuration shall be the same as those used in
each corresponding calibration (9.2.2,, 9.3.4, 9.4.2, 9.5.2 of this Standard).
6.5 If the measured ESA contains multiple units, the mutual connection cable shall be the
same as the connection wire-harness used in vehicles. If it is not allowed, then the
connection wire length between electronic control unit and the artificial network shall be
1500mm±75mm. All cables in protective sleeves shall be terminally-connected according
to the actual situation as far as possible, better to have real loads and exciters.
7 Frequency range and withstanding time
7.1 It shall conduct tests within the frequency range of 20MHz~1000MHz.
7.2 In order to guarantee ESA meeting the requirements of this Standard, the test shall be
conducted at least at 14 frequency points within this frequency range, for example.
27MHz, 45MHz, 65MHz, 90MHz, 120MHz, 150MHz, 190MHz, 230MHz, 280MHz, 380MHz,
450MHz, 600MHz, 750MHz, and 900MHz.
Considering the response time of the measured equipment, the withstanding time of the
measured equipment shall be sufficient to make it generate a response under normal
conditions. Under any condition, the withstanding time shall not be less than 2s.
8 Test signal characteristics
8.1 The maximum envelope amplitude
The maximum envelope amplitude of test signals shall be equal to the maximum envelope
amplitude of a unmodulated sine wave. The chapter 4 of this Standard specifies the root-
mean-square values of this sine wave, see Figure 1.
9.2 Strip-line method
9.2.1 Test method
This test method is to put the connection wire-harness connecting the parts in ESA in a
specific field intensity. This is a kind of method to conduct immunity test.
9.2.2 Field intensity calibration in the strip-line
In each expected test frequency, it shall input a certain-grade power to the strip-line. And
under the situation that measured ESA does not exist, it shall generate required field
intensity in test region. The pre-determined power grade or other parameters - related to
pre-determined power that is required for determining field intensity - shall be measured,
and the results shall be recorded. These results will be used in ESA test. Only when the
test chamber or the device changes, then this procedure is required to be carried out
repeatedly. In this process, the position of field intensity probes shall be under the active
conductor, and shall be located at the center of strip-line’s length direction, vertical direction,
and horizontal direction. The measuring...
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.