GB/T 33014.10-2020 Road vehicles—Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy—Part 10:Immunity to conducted disturbances in the extended audio frequency range (English Version)
Road vehicles—Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy—Part 10:Immunity to conducted disturbances in the extended audio frequency range
GB/T 33014.10-2020 Road vehicles—Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy—Part 10:Immunity to conducted disturbances in the extended audio frequency range English
1 Scope
This part of GB/T 33014 specifies component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy- immunity to conducted disturbances in the extended audio frequency range.
This part applies to the electrical/electronic components of M, N, O and L vehicles (regardless of the propulsion system, e.g. spark-ignition engine, diesel engine, electric motor). The method is particularly applicable to all power and output leads, as well as low frequency analogue leads of each individual device under test (DUT), as well as DUTs with acoustic or visible display functions.
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 33014.1 Road vehicles- Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 1: General (GB/T33014.1-2016, ISO11452-1:2005, MOD)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 33014.1 apply.
4 Test conditions
The applicable frequency range of the test method is 15 Hz to 250 kHz. The users shall specify the test severity level or levels over the frequency bands (see Annex A).
Standard test conditions are given in GB/T 33014.1 for the following:
- test temperature;
- test voltage;
- dwell time;
- test signal quality.
The tolerance on all parameters shall not exceed ± 10 %.
5 Test location
For this test, there are no special grounding or shielding requirements.
6 Test apparatus
6.1 General
The test apparatus consists of the following:
- an audio oscillator or signal generator,
- an extended range audio amplifier,
- an isolation transformer,
- a voltage measuring instrument,
- a current measuring instrument,
- a power supply, and
- a capacitor.
The source impedance of the signal source (at the output of the isolation transformer) over the test frequency range shall be
1) less than 0.5 Ω from 15 Hz to 50 kHz; and
2) less than or equal to 2 Ω from 50 kHz to 250 kHz.
Annex B details a procedure for verifying the source impedance of the test apparatus. The frequency range of the apparatus used for the test shall meet the test plan frequency range requirements.
Note 1: The upper frequency limit for the apparatus in 6.2.1, 6.2.2 and 6.2.3 may be reduced in accordance with the user’s frequency range requirements.
Note 2: Other types of apparatus can also produce equivalent signals, e.g. a power oscillator can replace the oscillator and amplifier, a power operational amplifier can replace the amplifier and power supply, etc.
6.2 Apparatus
6.2.1 Audio oscillator, 15 Hz to 250 kHz frequency range.
6.2.2 Audio power amplifier, 15 Hz to 250 kHz frequency range; 50 W output power minimum with output impedance not larger than 2.0 Ω (capable of delivering 50 W into a 0.5 Ω resistive load connected across the isolation transformer secondary). The amplifier shall be capable of operating open circuit without damage.
6.2.3 Isolation transformer, 15 Hz to 250 kHz frequency range; 4:1 impedance ratio; secondary as connected shall be capable of handling the total lead (supply plus test signal) current flow without saturating the core.
Note: It has been verified that at least one commercially available 30 Hz to 250 kHz transformer satisfies the extended frequency requirements of this part.
6.2.4 Voltage measuring instrument, i.e. oscilloscope, a.c. voltmeter, or other suitable high impedance meter.
6.2.5 Current measuring instrument, i.e. negligible series impedance inducing probe with appropriate magnitude capability.
Note: A clip-on Hall effect probe is suitable.
6.2.6 The power supply defined in GB/T 33014.1 shall be used.
6.2.7 A 100 µF capacitor may be used (for lines other than power lines) to shunt the source end of the isolation transformer to ground if difficulty is encountered in obtaining sufficient test voltage. Verification shall be made that desired signals are not excessively disturbed by the inclusion of the 100 µF capacitor.
7 Test set-up
The test set-up is shown in Figure 1. A d.c. power amplifier that satisfies the source impedance requirement of this part and can supply the power required by the DUT may be substituted for the power amplifier and isolation transformer for power supply lead testing.
Standard
GB/T 33014.10-2020 Road vehicles—Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy—Part 10:Immunity to conducted disturbances in the extended audio frequency range (English Version)
Standard No.
GB/T 33014.10-2020
Status
valid
Language
English
File Format
PDF
Word Count
5500 words
Price(USD)
150.0
Implemented on
2021-7-1
Delivery
via email in 1~2 business day
Detail of GB/T 33014.10-2020
Standard No.
GB/T 33014.10-2020
English Name
Road vehicles—Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy—Part 10:Immunity to conducted disturbances in the extended audio frequency range
GB/T 33014.10-2020 Road vehicles—Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy—Part 10:Immunity to conducted disturbances in the extended audio frequency range English
1 Scope
This part of GB/T 33014 specifies component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy- immunity to conducted disturbances in the extended audio frequency range.
This part applies to the electrical/electronic components of M, N, O and L vehicles (regardless of the propulsion system, e.g. spark-ignition engine, diesel engine, electric motor). The method is particularly applicable to all power and output leads, as well as low frequency analogue leads of each individual device under test (DUT), as well as DUTs with acoustic or visible display functions.
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 33014.1 Road vehicles- Component test methods for electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 1: General (GB/T33014.1-2016, ISO11452-1:2005, MOD)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 33014.1 apply.
4 Test conditions
The applicable frequency range of the test method is 15 Hz to 250 kHz. The users shall specify the test severity level or levels over the frequency bands (see Annex A).
Standard test conditions are given in GB/T 33014.1 for the following:
- test temperature;
- test voltage;
- dwell time;
- test signal quality.
The tolerance on all parameters shall not exceed ± 10 %.
5 Test location
For this test, there are no special grounding or shielding requirements.
6 Test apparatus
6.1 General
The test apparatus consists of the following:
- an audio oscillator or signal generator,
- an extended range audio amplifier,
- an isolation transformer,
- a voltage measuring instrument,
- a current measuring instrument,
- a power supply, and
- a capacitor.
The source impedance of the signal source (at the output of the isolation transformer) over the test frequency range shall be
1) less than 0.5 Ω from 15 Hz to 50 kHz; and
2) less than or equal to 2 Ω from 50 kHz to 250 kHz.
Annex B details a procedure for verifying the source impedance of the test apparatus. The frequency range of the apparatus used for the test shall meet the test plan frequency range requirements.
Note 1: The upper frequency limit for the apparatus in 6.2.1, 6.2.2 and 6.2.3 may be reduced in accordance with the user’s frequency range requirements.
Note 2: Other types of apparatus can also produce equivalent signals, e.g. a power oscillator can replace the oscillator and amplifier, a power operational amplifier can replace the amplifier and power supply, etc.
6.2 Apparatus
6.2.1 Audio oscillator, 15 Hz to 250 kHz frequency range.
6.2.2 Audio power amplifier, 15 Hz to 250 kHz frequency range; 50 W output power minimum with output impedance not larger than 2.0 Ω (capable of delivering 50 W into a 0.5 Ω resistive load connected across the isolation transformer secondary). The amplifier shall be capable of operating open circuit without damage.
6.2.3 Isolation transformer, 15 Hz to 250 kHz frequency range; 4:1 impedance ratio; secondary as connected shall be capable of handling the total lead (supply plus test signal) current flow without saturating the core.
Note: It has been verified that at least one commercially available 30 Hz to 250 kHz transformer satisfies the extended frequency requirements of this part.
6.2.4 Voltage measuring instrument, i.e. oscilloscope, a.c. voltmeter, or other suitable high impedance meter.
6.2.5 Current measuring instrument, i.e. negligible series impedance inducing probe with appropriate magnitude capability.
Note: A clip-on Hall effect probe is suitable.
6.2.6 The power supply defined in GB/T 33014.1 shall be used.
6.2.7 A 100 µF capacitor may be used (for lines other than power lines) to shunt the source end of the isolation transformer to ground if difficulty is encountered in obtaining sufficient test voltage. Verification shall be made that desired signals are not excessively disturbed by the inclusion of the 100 µF capacitor.
7 Test set-up
The test set-up is shown in Figure 1. A d.c. power amplifier that satisfies the source impedance requirement of this part and can supply the power required by the DUT may be substituted for the power amplifier and isolation transformer for power supply lead testing.
