Automotive EMC & Electrical Performance
As the automotive industry rapidly accelerates towards electrification, intelligence, and connectivity, Automotive EMC and Electrical Performance Testing has become a core requirement for components to enter OEM supply chains. Whether meeting type approval requirements or passing the stringent corporate standards of OEMs like GAC, BYD, NIO, Tesla, Toyota, Rivian, suppliers must establish comprehensive testing capabilities covering EMI (Electromagnetic Interference), EMS (Electromagnetic Susceptibility), and Electrical Performance.
This article systematically reviews current mainstream standard systems, test items, and niche capabilities, and recommends SRC-TEST, a testing service platform with differentiated testing resources, to help enterprises efficiently comply and enter OEM supply chains.
I. Core Standard Systems
Automotive EMC testing is based on international, national, and industry standards, primarily including:
International Standards: CISPR25, ISO11452-2, ISO11452-4, ISO11452-8, ISO11452-9, ISO 7637-2, ISO7637-3, ISO10605, ISO16750-2
National Standards (China): GB/T 18655, GB/T 21437.2, GB/T 33014.2, GB/T 33014.4, GB 34660, GB/T 28046.2, GB/T 19951
EU & Certification Standards: ECE R10.06, ECE R10.07, EN 50498, EN 15194
OEM Extended Standards: GAC (QJGAC), Chery (Q/SQR), BYD (Q/BYDQ), NIO (NIO-TP), Tesla (TS-0000048), Toyota (TSC), Rivian (RTS.3653), etc.
II. Complete Test Items & Niche Capabilities
(I) EMI Testing
Test Item | Applicable Standard(s) | Niche / Advanced Capability |
Radiated Emission - ALSE Method | CISPR 25 / GB/T 18655 | 1m/3m/5m methods, supports HV components |
Conducted Emission - Voltage Method | CISPR 25 / GB/T 18655 | Supports 48V / 400V / 800V systems |
Conducted Emission - Current Probe Method | CISPR 25 / GB/T 18655 | High-bandwidth probe, suitable for complex wiring harnesses |
Transient Conducted Emission | ISO 7637-2 / GB/T 21437.2 | Supports E-switch / M-switch |
HV Component Conducted Emission | OEM Extended Standards | Suitable for new energy vehicle (NEV) battery, e-drive, e-control systems |
Vehicle Antenna Port Noise Measurement | Toyota TSC | Rare industry capability |
Near-field Magnetic/Electric Field Radiation | Rivian / Tesla | 11~9 test points, tri-directional antennas |
(II) EMS Testing
Test Item | Applicable Standard(s) | Niche / Advanced Capability |
Radiated Immunity - Anechoic Chamber Method | ISO 11452-2 / GB/T 33014.2 | 80MHz ~ 6GHz, up to 30V/m |
Bulk Current Injection (BCI) | ISO 11452-4 | 4kHz ~ 400MHz, 200mA, 150/750mm harness spacing |
Magnetic Field Immunity (MFI) | ISO 11452-8 | DC ~ 300kHz, up to 1000A/m |
Portable Transmitter Immunity (PTI) | ISO 11452-9 | Multiple frequency points from 26MHz ~ 6GHz |
Power Line Transient Conducted Immunity | ISO 7637-2 | Pulses 1 ~ 5b |
Non-Power Line Transient Coupling Immunity | ISO 7637-3 | CCC / ICC / DCC methods |
Electrostatic Discharge (ESD) Immunity | ISO 10605 / GB/T 19951 | Powered/Unpowered/Remote I/O |
Radar Pulse Immunity | Toyota / BYD | Millimeter-wave radar frequency band |
Wireless Device Antenna Proximity Test | Toyota TSC | Real-vehicle antenna coupling |
Reverberation Chamber Method | BYD / GB/T 33014.11 | Testing of large volume samples |
Micro-gap Discharge Test | Toyota TSC | Advanced ESD test item |
(III) Electrical Performance Testing
Test Item | Applicable Standard(s) | Niche / Advanced Capability |
DC Supply Voltage / Overvoltage / Reverse Voltage | GB/T 28046.2 / ISO 16750-2 | 12V / 24V systems |
Insulation Resistance / Dielectric Strength | GB/T 28046.2 | Specific to HV components |
Open Circuit / Short Circuit Protection | ISO 16750-2 | Multi-channel parallel testing |
Superimposed AC Voltage / Voltage Ripple Immunity | Rivian / GB/T 28046.2 | Simulates real-world power supply ripple |
Surge / Electrical Fast Transient (EFT) (on HV ports) | SANY / BYD | For NEV high-voltage systems |
HV-LV Coupling Attenuation Measurement | NIO / SANY | Rare capability for HV-LV mutual coupling |
III. OEM Standard Mapping Overview
OEM | Typical Test Items | Special Requirements |
GAC | RE, CE, CTE, RI, BCI, MFI, PTI, ESD | Human EMF Protection |
Chery | RF Conducted/Radiated Emission, BCI, RI | 20MHz-80MHz, 120V/m |
BYD | Reverberation Chamber Method, Radiated Immunity | Radar Wave, ICC/CCC Coupling |
NIO | HV/LV Conducted Emission, Coupling | 48V/400V/800V systems, Sensor line coupling |
Tesla | AN Method, ALSE Method, BTI | Near-field coupling, TOL (ICC/CCC) |
Rivian | Near-field Magnetic/Electric Field, Insulation Resistance | Parasitic current, Multi-power/Ground |
Toyota TSC | Current/Voltage Probe Method, Stripline Method | Antenna terminal noise, Micro-gap discharge |
To enter the supply chains of these OEMs, suppliers must cover all test items listed in their standards, especially niche capabilities such as HV component testing, coupling tests, human EMF protection, and near-field coupling.
IV. Human EMF Exposure Testing – An Emerging Critical Capability
With the widespread adoption of new energy vehicles, Human EMF Exposure Testing has become a key focus area for OEMs. Applicable standards include:
GB 8702, ICNIRP 2020
IEC 62311, EN 50665
NIO EH 510 / HP 710, GAC EMF requirements
Test parameters cover:
Electric Field Strength / Magnetic Field Strength / Magnetic Flux Density / Power Density
Low-frequency Magnetic Field Emission (RE02)
6cm / 60cm Loop Antenna Method (Toyota)
SRC-TEST has established a complete EMF testing capability and is one of the few laboratories in China capable of covering both standard EMF requirements + OEM extended requirements.
V. Why Choose SRC-TEST?
As a leading domestic service platform for Automotive EMC and Electrical Performance Testing, SRC-TEST provides one-stop testing solutions covering mainstream OEM standards.
✅ Platform Advantages
Comprehensive Testing Capabilities
Includes Radiated Emission (ALSE method), Conducted Emission (Voltage/Current methods), Transient Emission, BCI, RI, MFI, PTI, ESD, Electrical Performance (ISO 16750-2), plus niche items such as HV component testing, HV-LV coupling, EMF, near-field coupling, antenna port noise, and radar pulse immunity.High-Standard Chambers & Equipment
Chamber background noise meets CISPR 25 Class 5, frequency range 9kHz ~ 18GHz, supports DC 2000V/400A power supply simulation, compatible with 48V / 400V / 800V systems.
Full Coverage of OEM Standards
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