Electrical tests, EMC and ESD

EMC testing – Measurements of emissions of conductive interference in accordance with ISO 7637-2*

Test aim

The electrical and electronic equipment present in a vehicle, connected in many cases by means of long wiring harnesses, with a large number of connections, may experience mutual interference with each other through electrical interference transmitted by conduction along the power cables. In order to determine the nature and level of the interference, tests of emitted conductive interference are carried out.

Test objects

Electrical and electronic devices mounted in automotive vehicles, powered with 12 V and 24 V DC current.

Test equipment setup

  • grounded reference plane
  • EmTest AN 200N100 artificial network
  • EmTest BS 200N100 electronic switch
  • EmTest BSM 200N40 mechanical switch
  • EmTest CA BS 200 N - reference load for BS 200N100
  • Tektronix MSO3054 oscilloscope
*standard referred to in UNECE Regulation No. 10.

EMC testing - Transient response test in accordance with ISO 7637-2 *

Test aim

Checking the vehicular electronic equipment using strictly defined test pulses, thus reflecting the voltage waveforms occurring in the on-board electrical system of the vehicle.
 

Test objects

Electrical and electronic devices mounted in automotive vehicles, powered with 12 V and 24 V DC current.
 

Test impluses

1, 2a, 2b, 3a, 3b in accordance with ISO 7637-2; also “Starting Profile” (impulse 4) and “Load Dump A and B” (impulses 5a, 5b) in accordance with ISO 16750-2**

The waveforms generated by device control environments: ISO.CONTROL, AutoWave CONTROL

Measuring equipment produced by EmTest

  • grounded reference plane
  • generators realizing test pulses:
    • EmTest UCS 200 N,
    • EmTest VDS 200 N,
    • EmTest LD 200 N,
    • ISO.CONTROL, AutoWave CONTROL environment.
 

Norms

We carry out testing according to:
  • international standards: ISO 7637-2, ISO 16750-2
  • various automotive industry manufacturer standards: VW (VW 8000), Audi, PSA (PSA B21 7090), Fiat (FIAT 9.90110)***
 
* standard referred to in UNECE Regulation No. 10
** standard referred to in ISO 7637-2
*** Customer for provide norms for testing

ESD Testing – Test of resistance to electrostatic discharge

Test aim

Checking the behaviour of electronic equipment in response to the rapid flow of electric charge between bodies with different electrostatic potentials in close proximity (or direct contact).
 

Test objects

Electrical and electronic equipment for a wide range of applications.
 

Testing levels

Testing levels in accordance with ISO 10605 and IEC 61000-4-2 – up to 30 kV in both air and contact mode.
 

EmTest measurement apparatus

  • grounded reference plane
    • EmTest UCS 30 N generator compliant with EN/IEC 61000-4-2 Ed.1 and IEC 61000-4-2 Ed.2;
    • ISO.CONTROL environment
 

Norms

We carry out testing according to:
  • international standards: EN 61000-4-2, ISO 10605
  • various automotive industry manufacturer standards: PSA (PSA B21 7110), VW (TL 824 66), GM (GMW 3097), among others***
*** Customer for provide norms for testing
Document No. Title/Description
Regulamin nr 10 EKG ONZ / Regulation No 10 UN/ECE / Regelung Nr. 10 UNECE Uniform provisions concerning the approval of vehicles with regard to electromagnetic compatibility
ISO 7637-2:2011 Road vehicles - Electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only
EN 61000-4-2 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
ISO 10605 Road vehicles - Test methods for electrical disturbances from electrostatic discharge
PSA B21 7110 Environment specifications for electrical and electronic equipments. Electrical characteristics - The purpose of this standard defines the requirements to observe in order to ensure the electrical behavior and the Electromagnetic Compatibility (EMC) of the vehicles (specific vehicles and utility vehicles) and of associated electric, electronic and pyrotechnic equipment
TL 82466 Electromagnetic Compatibility of Automotive Electronic Components’ Immunity to Electrostatic Discharge (ESD)
General Specification for Electrical/Electronic Components and Subsystems, Electromagnetic Compatibility General Specification for Electrical/Electronic Components and Subsystems, Electromagnetic Compatibility
ISO 16750-2 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 2: Electrical loads