Test Your Wireless Power Transfer (WPT) Systems Easily to Pass Safety Compliance

There are regulatory requirements that apply to all electrical equipment manufactured and imported in Australia before you can sell them locally. Failure to do so can result in formal warnings, penalties, or your product being rejected for local sale altogether.

For wireless charging equipment that may emit electromagnetic energy (EME), which is harmful to the human body, additional guidelines are enforced by the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) for safety.  

As a manufacturer, a lab test engineer or an importer, we understand that you may be looking for the easiest, most accurate way to comply with these standards. Wavecontrol has a simple solution for that through the SMP3, WP400-3 probe, and the WP10M probe devices. 

What is WPT?

Wireless Power Transfer (WPT) is the method of charging devices, such as cellular phones, electric vehicles, some home appliances, and medical apparatuses wirelessly. No doubt they are convenient, and in some instances, even make charging possible. However, WPT devices, if not tested accordingly, can also generate EME, which can be harmful to humans.   

How Wavecontrol Tests WPT Devices  

Touch distance (0mm) measurement is Wavecontrol's key factor when evaluating exposure to portable WPT systems.  

The test focuses on portable devices that users are likely to interact with during the charging process. It necessitates measuring the nerve stimulation (NS) at touch distance, because the key concern for nerve stimulation assessment is the maximum instantaneous field exposure to the human body.  

Capabilities of Wavecontrol’s WP400-3 and WP10M Probes  

Wavecontrol’s portable electromagnetic field (EMF) measuring device, the SMP3, when used with either of the two probes – WP400-3 or WP10M, can conduct specialised EMF measurements for WPT devices. If you’d like to learn more about the SMP3 device, please check our previous blog here.  

WP400-3 probe has a small sensor that allows it to get close to the Equipment Under Test (EUT), in this case, any wireless charging system, to take the measurements and monitor EMF levels.  

The WP10M probe, on the other hand, can perform a spectral analysis of the EUT by way of Fast Fourier Transform (FFT) up to 10MHz, to ensure there are no significant fields above 400kHz. FFT is a type of measurement that converts a signal into individual spectral components, thereby providing frequency information about the signal.  

For reference, to date, ARPANSA has set the limits of compliance for mobile or portable transmitting equipment that emits radiofrequency (RF) EMF at frequencies between 100 kHz and 300 GHz. You can read more about this here.  

Features of the WP400-3   

• Measures 1Hz to 400 kHz 

• Probe size: 275 x 33 mm Ø 

• Electric and magnetic field measurement 

• Isotropic and true RMS measurement 

• Spectrum analysis probe 

• Measurements in accordance with international standards 

• ISO certified 

• Other typical applications: household appliances and electric welding equipment  

Features of the WP10M  

• Measures 1 Hz - 10 MHz  

• Probe size: 280 mm x 128 mm Ø / 11.02 in x 5.04 in Ø 

• 100 cm² sensor 

• Electric and magnetic field measurement 

• Isotropic and true RMS measurement 

• Spectrum analysis probe 

• Measurements in accordance with international standards 

• ISO certified 

• Other typical applications: power lines, railway environment, and manufacturing facilities   

Wavecontrol’s probes comply with international main standards concerning human exposure assessment for WPT systems, including:  

• RSS-102.NS.MEAS (2023), (Previously SPR-002 Ed.2: 2022) 

• FCC KDB 680106 v4 

• IEC/IEEE 63184 ED1 (in development)   

If you want to learn more about EMF limits, you can check the most recent regulatory standards set by ARPANSA here.  

If you need more information, or require technical advice and assistance, please contact our team on 1300 236 467 or sales@admtech.com.au. You can also reach us through our website.