Performance Levels and Methods of Measurement of Magnetic and Electric Field Strength from Electric Vehicles, 150 kHz to 30 MHz

Scope:

This SAE Recommended Practice specifies measurement procedures and performance levels for magnetic and electric field emissions and conducted power mains emissions over the frequency range 150 kHz to 30 MHz, for vehicles incorporating electric propulsion systems, e.g., battery, hybrid, or plug-in hybrid electric vehicles.

Conducted emission measurements in this document are applicable only to battery-charging systems which utilize a switching frequency above 9 kHz, are mounted on the vehicle, and whose power is transferred by metallic conductors. Conducted emission requirements apply only during charging of the batteries from AC power lines.

Conducted and radiated emissions measurements of battery-charging systems that use an induction power coupling device are not covered by this document.

The measurement of electromagnetic disturbances for frequencies from 30 MHz to 1000 MHz is covered in CISPR 12.

Rationale:

The SAE J551-5 document was originally created for the measurement of low frequency electric and magnetic fields to protect reception in assembly plants from machinery noise. The document has since over the years been plagiarized and misused in a way that has led to turmoil throughout the automotive industry. Thus the International CISPR Committee has begun drafting CISPR 36 which will address low frequency measurements from alternative powertrain vehicles and be accepted and adopted globally in the community; the SAE J551-5 document is redundant and outdated in comparison.

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