It has the largest 10-meter semi-anechoic chamber in the country in the automotive field, equipped with a "3+1" axle chassis dynamometer system and a 12.5m turntable, which can meet the EMC testing needs of various models. In addition, it is the only electromagnetic compatibility laboratory at home and abroad that can simulate and detect road conditions of 18m vehicles. It has built a 3m semi-anechoic chamber with two systems of "hydrogen supply" and "dynamometer", and has product testing capabilities of "fuel cell engine system" and "electric drive system".
10m method semi-anechoic chamber
The main technical parameters:
• Size: 27400mm*20200mm*9000mm
• Turntable: diameter 12.5m, maximum load-bearing 30t
• Maximum fit: 18000mm long, 4800mm high vehicle
• Shielding effectiveness: 10kHz-18GHz@>100dB
• Normalized field attenuation: -3.5dB~3.5dB
• Site uniformity: 0dB~6dB
• Site VSWR: <5.5dB
• Noise floor: GB 34660@<15dBx GB/T18387@<6dB
Special Chassis Dynamometer
The main technical parameters:
• Specifications: Four-axis independent drive chassis dynamometer
• Single bearing weight: 12t
• Maximum wheelbase: 2700mm
• Number of axes: 4 axes (3 adjustable axes + 1 fixed axis)
• Maximum driving speed: >120km/h
Vehicle Electromagnetic Compatibility Test System
The main technical parameters:
• Radiated emission: 0.009MHz~6200MHz
• Conducted emission: 0.009MHz~245MHz
• Radiation immunity: 20MHz~3200MHz@>50V/m
• Analog transmitter immunity: 26MHz-6000MHz@>120W
• High current injection: 10kHz~400MHz@>300mA
• ESD: Four discharge networks @±2-±30KV
• Surge: peak voltage ±6KV; meet AC380/100A. DC1000V/100A power supply
• Electric fast pulse group: peak value voltage ±4.8KV, meet AC380/100A. DC1000V/100A power supply
• Harmonic and flicker test: meet 30KW sample power supply
Applicable standard:
• GB 14023:2011 "Limits and measurement methods of radio disturbance characteristics of vehicles, ships and internal combustion engines used to protect off-board receivers"
• GB 34660:2017 "Road Vehicle Electromagnetic Compatibility Requirements and Test Methods"
• ISO 11451-2:2015 "Vehicle test methods for electrical disturbances caused by narrow-band radiated electromagnetic energy in road vehicles - Part 2: Radiation sources outside the vehicle"
• ECE RIO Rev6 "Uniform Regulations for the Approval of Vehicles with respect to Electromagnetic Compatibility"
• CISPR 25:2016 "Limits and Methods of Measurement of Radio Disturbance Characteristics for the Protection of Receivers Mounted on Vehicles, Vessels and Equipment"
• GB/T 18387:2017 "Limits and Measurement Methods of Electromagnetic Field Emission Intensity for Electric Vehicles"
• GB/T 24338.4:2018 "Electromagnetic Compatibility of Rail Transit Part 3-2: Rolling Stock Equipment"
• GB/T4042 8:2021 "Electromagnetic Compatibility Requirements and Test Methods for Conductive Charging of Electric Vehicles"
• GB 4824:2019 "Industrial, Scientific and Medical Equipment Radio Frequency"
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