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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 19951-2005, with respect to which, the main changes are as follows:
——the terms are adjusted (see Clause 3; Clause 3 of Edition 2005);
——the test conditions, test location and discharge modes are added (see Clauses 4, 5 and 7);
——the requirements for test apparatus are significantly modified (output voltage, discharge resistance, and reduction of specified equipment types) (see Clause 6; Clause 4 of Edition 2005);
——the test methods are significantly adjusted, including component powered-up test method and vehicle test method (see Clauses 8 and 10; Clauses 5 and 6 of Edition 2005);
——the requirements for test result assessment and test report are adjusted (see Clauses 8, 9 and 11; Clauses 5~7 of Edition 2005);
——"Guidance for design of current target", "Test method selection guidance for component discharge" and "Optional test set-up and procedure for components (powered-up test)" are added to specify calibration and test methods and test procedures for equipment (see Annexes B, D and E);
——the function performance status classification (FPSC) is changed to be informative (see Annex C; Annex B of Edition 2005).
This standard has been redrafted and modified in relation to ISO 10605: 2008 Road vehicles - Test methods for electrical disturbances from electrostatic discharge.
The following structural adjustments have been made with respect to ISO 10605: 2008:
——no sub-clauses are listed under 6.3;
——no sub-clauses are listed under 9.3.3;
——9.3.7 is added;
——C.3 and C.4 are deleted;
——the original Annex F is adjusted to Annex E.
Technical differences between this standard and ISO 10605: 2008 are marked with perpendicular single line (|) in the outside page margin of the provisions concerned.
Compared with ISO 10605: 2008, technical differences and their reasons are as follows:
——the adjustments of technical difference are made for the normative references in this standard so as to adapt to the technical conditions in China. The adjustment is mainly reflected in Clause 2 "Normative references" with the specific adjustments as follows:
ISO 7637-1 and ISO 11452-1 are deleted;
GB/T 29259-2012 is added.
——GB/T 29259-2012 already contains the terms of electrostatic discharge, human body electrostatic discharge model, reference plane and electrostatic discharge simulator (generator), and the contents of original 3.5, 3.6, 3.7 and 3.10 are deleted.
——In order to clearly describe the contact discharge current waveform and to facilitate understanding the meanings of t1 and t2 in Table 2, Figure 3 "Schematic diagram of contact discharge waveform parameters" is added below Table 2 by reference to relevant standards, and subsequent figure numbers are changed in sequence.
——The functional requirements of the components after the test are added as the judgment of results after the test, see 9.3.7.
——The original 6.3.2 is deleted for the reason that it is unnecessary and is easy to cause misunderstanding.
The following editorial changes have been made in this standard:
——the name of this standard is modified;
——this standard incorporates the amendments to ISO 10605: 2008/Amd 1: 2014 and ISO 10605: 2008/Cor.1: 2010, and the provisions concerned with the amendments are marked with perpendicular double lines (||) at the outside page margin;
——for easy understanding, the current/test voltage (A/kV) in Table 2 is annotated;
——the description of test voltage in original 8.4.5 is the same as that in 8.3.6. This standard will not repeat it but will cite 8.3.6, according to which, 9.3.3, 9.3.4, 9.3.5, 9.3.6 and 10.3.3 will be treated;
——the note of "1" in the cut side view of Figure B.1c) in original Annex B is deleted, and "1" is modified to "M3 screw hole";
——in order to maintain the consistency of expression and understanding of function performance status classification (FPSC) among several standards of electromagnetic immunity series, GB/T 33014.1 is directly cited for the content of function performance status classification (FPSC) in Annex C;
——the original Annex E "Rationale for air discharge generator verification" is deleted because it is extremely informal and has no direct relation with the technical requirements and test methods of this standard.
This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee of Auto Standardization (SAC/TC 114).
Road vehicles - Disturbances test methods for electrical/electronic component from electrostatic discharge
1 Scope
This standard specifies the electrostatic discharge (ESD) tolerance test methods necessary to evaluate electrical/electronic component intended for vehicle use in the cases of ESD in assembly, ESD caused by service staff and ESD caused by occupants, including component and vehicle level tests.
This standard is applicable to electrical/electronic component for Types M, N, O and L vehicles, regardless of vehicle propulsion system (e.g. spark-ignition engine, diesel engine, electric motor).
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 29259-2012 Road vehicle - Electromagnetic compatibility terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions established in GB/T 29259-2012 and the following ones apply.
3.1
device under test; DUT
single component or combination of components as defined to be tested
3.2
air discharge
test method characterized by bringing the test generator electrode close to the device under test (DUT); the discharge is by arcing on the DUT
3.3
contact discharge
test method characterized by contact of the test generator electrode with the DUT, where discharge is initiated by the generator discharge switch
3.4
direct discharge
test method characterized by discharging directly on the DUT
3.5
indirect discharge
test method characterized by discharging on a coupling plane near the DUT Generally, indirect discharge simulates discharge by a human being on objects adjacent to the DUT.
3.6
surface
uninterrupted housing area, gap or opening Example: rocker switches, points of contact, air vents, speaker openings.
3.7
holding time
interval of time within which the decrease of the test voltage due to leakage, prior to the discharge, is 10%
3.8
horizontal coupling plane; HCP
metal plane oriented in horizontal direction, to which discharges are applied to simulate discharge to objects adjacent to the DUT
4 Test conditions
The ambient conditions during the test are as follows. If other ambient conditions are adopted, these conditions shall be documented in the test report:
——ambient temperature: (25±10)℃;
——relative humidity: 20%~60% (20℃ and 30% relative humidity preferred).
The user shall specify the test level(s), see Annex C.
5 Test location
Test shall be carried out in a laboratory that meets the ambient conditions. Special locations, such as shielded enclosures or absorber-lined shielded enclosures may be used.
Note: ESD test creates transient fields, which can interfere with sensitive electronic devices or receivers, even at a distance of a few meters. It is advisable that this be considered when choosing a test location.
6 Test apparatus
6.1 ESD generator
The ESD generator shall be able to generate a repetition rate of at least 10 discharges per second in either automatic or manual control without any degradation of the discharge current waveform. In cases where a 2m length of the discharge return cable is insufficient (e.g. for tall DUTs), a length not exceeding 3m may be used and compliance with the waveform shall be guaranteed. The ESD generator characteristics are as specified in Table 1.
Note: when an ESD generator is supplied from an external supply source or controlled by a separate unit, the connecting cable(s) shall be kept at a distance from the discharge return cable of the ESD generator to prevent unintended current from flowing through this/these cable(s).
Table 1 ESD generator characteristics and parameters
Characteristic Parameter
Output voltage range in contact discharge mode 2kV~15kV (or as required in the test plan a)
Output voltage range in air discharge mode 2kV~25kV (or as required in the test plan a)
Output voltage accuracy ≤5%
Output polarity Positive and negative
Rise time of short circuit current in contact discharge mode 0.7ns~1.0ns
Hold time ≥5s
Storage capacitances 150pF, 330pF
Discharge resistances 330Ω, 2 000Ω
a See examples in Annex C.
6.2 Discharge electrodes
6.2.1 Contact discharge electrode
The discharge electrode for contact mode is typically made of stainless steel, as shown in Figure 1.
nts
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
5 Test location
6 Test apparatus
7 Discharge modes
8 Component test method (DUT powered-up test)
9 Component test method (DUT unpowered test)
10 Vehicle test method
11 Test report
Annex A (Normative) Verification of ESD generator
Annex B (Informative) Guidance for design of current target
Annex C (Informative) Function performance status classification (FPSC) and severity level example
Annex D (Informative) Test method selection guidance for component discharge
Annex E (Informative) Optional test set-up and procedure for components (powered-up test)
