Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 33014 consists of the following parts under the general title Road vehicles - Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy:
—— Part 1: General;
—— Part 2: Absorber-lined shielded enclosure;
—— Part 3: Transverse electromagnetic (TEM) cell;
—— Part 4: Bulk current injection (BCI);
—— Part 5: Stripline;
—— Part 7: Direct ratio frequency (RF) power injection;
—— Part 8: Magnetic field immunity method;
—— Part 9: Portable transmitters;
—— Part 10: Immunity to conducted disturbances in the extended audio frequency range;
—— Part 11: Reverberation chamber.
This part is Part 1 of GB/T 33014.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part has been redrafted and modified in relation to ISO 11452-1: 2005 Road vehicles - Vehicle test methods for electrical disturbances from narrowband radiated electromagnetic energy - Part 1: General principles and terminology and ISO 11452-1 AMD 1: 2008.
The technical deviations between this part and ISO 11451-1: 2005 and their justifications are as follows:
——Clause 1 is normatively prepared in accordance with GB/T 1.1-2009;
——Clause 2 “Normative references” is added in accordance with GB/T 1.1-2009, including several standards used in the text;
——in the original international standards of this series, 11 parts have been added, but the other parts (out of Parts 1-5) cannot be converted synchronously together with Parts 1-5, so such condition is not easy to express in Table 1. Consequently, Part 7 of Table 1 of the original international standard is deleted, and only Parts 1-5 converted synchronously are retained;
——the terms and definitions in the original international standard, which duplicated with those in GB/T 29259, are therefore deleted; only the ones in the national standard are referenced to avoid duplication of definitions;
——the content of Clause 3 and Sub-clause 4.1 of the original international standard are included in 4.1 and 4.2 of this part respectively, and Clauses 3 and 4 of the original international standard are merged in this part to maintain the structural correspondence with the original standard;
——a revision of the original international standard is added in 2008, making great adjustments to the functional performance status classification (FPSC) in Annex A. Considering that the understanding and requirements of many international standards for the functional performance status classification (FPSC) are tending to the new edition, the revised Edition 2008 is adopted for Annex A in this part.
——as both A.1 and A.2 in Annex A (Edition 2008) of the original international standard describe the principle of functional performance status classification (FPSC), while the contents and titles do not completely correspond, this part comprehensively synthesizes the upper and lower paragraphs, and integrates the principle of functional performance status classification (FPSC) into A.2, so that the contents of upper and lower paragraphs correspond to the titles, facilitating the understanding and use of the standard.
The following editorial change has been made in this part:
——“Foreword”, “Introduction” and “Bibliography” of the original international standard are deleted.
This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This part is under the jurisdiction of the National Technical Committee of Auto Standardization (SAC/TC 114).
Road vehicles - Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 1: General
1 Scope
This part of GB/T 33014 specifies the general conditions, test apparatus, test procedures, etc. for component (ESA) test for electrical/electronic disturbances from continuous narrowband radiated electromagnetic energy.
This part is applicable to electrical/electronic components for Categories M, N, O and L vehicles, regardless of the vehicle propulsion system (e.g. spark-ignition engine, diesel engine, electric motor).
Note: The immunity test of this standard series is applicable to continuous narrowband electromagnetic fields with a frequency range of 0.01 MHz ~ 18,000 MHz.
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 29259 Road vehicle - Electromagnetic compatibility terminology
GB/T 33014.2 Road vehicles - Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 2: Absorber-lined shielded enclosure (GB/T 33014.2-2016, ISO 11452-2: 2004, MOD)
GB/T 33014.3 Road vehicles - Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 3: Transverse electromagnetic (TEM) cell (GB/T 33014.3-2016, ISO 11452-3: 2001, MOD)
GB/T 33014.4 Road vehicles - Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 4: Bulk current injection (BCI) (GB/T 33014.4-2016, ISO 11452-4: 2005, MOD)
GB/T 33014.5 Road vehicles - Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 5: Stripline (GB/T 33014.5-2016, ISO 11452-5: 2002, MOD)
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 29259 apply.
4 Test condition
4.1 General
The test methods, procedures, instrumentation and levels specified in the standard are intended to determine the immunity characteristics of ESA for electrical disturbances by narrowband radiated electromagnetic energy, so as to provide a basis for mutual agreement between vehicle manufacturers and component suppliers.
Some ESAs are very susceptible to some characteristics of electromagnetic disturbance, such as frequency, severity level, type of coupling or modulation. Some are more susceptible to modulated, as opposed to unmodulated, radio-frequency (RF) signals. The reason is that high-frequency disturbances may be demodulated by semiconductors. In the case of unmodulated signals, this leads to a continuous shift of, for example, a voltage; in the case of amplitude-modulated signals, the resulting low-frequency fluctuations may be interpreted as intentional signals (e.g. speed information) and therefore disturb the function of the device under test (DUT) more severely.
A single test method may not reveal all the needed information about immunity of the DUT. It is thus necessary in the use of this standard series to anticipate the appropriate test conditions, select applicable parts of GB/T 33014 and define performance indexes of the DUT. The main characteristics of each test method are presented in Table 1.
Table 1 Main characteristics of test methods in this standard series
Standard series Applicable frequency range MHz Coupling to Parameter and unit of test severity levels Remarks
Absorber-lined shielded enclosure (GB/T 33014.2) 80~18 000 DUT and wiring harness Electric field (V/m) Absorber-lined shielded enclosure
Transverse electromagnetic (TEM) cell (GB/T 33014.3) 0.01~200 DUT / wiring harness Electric field (V/m) The size of DUT/ harness is limited.
Bulk current injection (BCI) (GB/T 33014.4) 1~400 Wiring harness Current (mA) Shielded enclosure
Stripline (GB/T 33014.5) 0.01~400 Wiring harness Electric field (V/m) The size of Shielded enclosure harness is limited.
4.2 Test condition
Unless otherwise specified, the following test conditions are applicable to all parts of GB/T 33014:
—— Test temperature;
—— Test voltage;
—— Modulation;
—— Dwell time;
—— Frequency step sizes;
—— Definition of test severity levels;
—— Test signal quality.
Unless otherwise specified, the variables used shall have the following tolerances:
—— ±10% for durations and distances;
—— ±10% for resistances and impedances;
—— ±1 dB for power meter;
—— ±3 dB for field probe.
4.3 Test temperature
The ambient temperature during the test shall be (23±5)℃. If another test temperature is agreed by the supplier and the demander, the temperature shall be stated in the test report.
4.4 Test voltage
The supply voltages applied in the test are as follows:
—— 12V electrical system: (13.5±0.5) V;
—— 24V electrical system: (27±1) V.
Other voltages agreed upon by the supplier and demander shall be documented in the test report.
4.5 Modulation mode
The characteristics of the DUT determine the type and frequency of modulation signals. Unless otherwise specified, the following signals shall be used.
—— Unmodulated sine wave (CW). See Figure 1 a);
—— Sine wave amplitude modulated (AM) by 1 kHz sine wave at modulation depth m=0.8. See Figure 1 b) and Annex B;
—— Sine wave pulse modulated (PM) with pulse width of 577 μs and period of 4,600 μs. See Figure 1 c).
In actual test, PM modulated wave shall not be replaced by either the pulse from blanking of the amplifier or a 100% AM modulated wave (modulation depth m=1).
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test condition
4.1 General
4.2 Test condition
4.3 Test temperature
4.4 Test voltage
4.5 Modulation mode
4.6 Dwell time
4.7 Frequency step size
4.8 Definition of test severity levels
4.9 Test signal quality
5 Measuring equipment
5.1 Artificial loads
5.2 Grounding and shielding
5.3 Power supply
5.4 Test signal quality
6 Test procedure
6.1 Test plan
6.2 Test methods
6.3 Declared speed
6.4 DUT immunity measurement
6.5 Test report
Annex A (Normative) Function performance status classification (FPSC)
Annex B (Informative) Constant peak test level
