ELF

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Extremely Low Frequency (ELF)

Extremely low frequency electromagnetic radiation of 50 Hz and 60 Hz, the power line frequencies.

NEW- Narda ELT-400 Exposure level testing equipment for measuring low and medium frequency magnetic fields up to 400 kHz

ELF Spot Survey - Example

• Power frequency magnetic fields measured at proposed factory extension site - Site diagram showing measurement points (in yellow) View an example of a survey plan here (pdf 32kB) The magnetic field data is then presented in table format.

Sources of ELF

• Power lines, Transmission lines
• Transformers
• Sub-stations
• Appliances, machines etc.

References;

• Interim Guidelines On Limits Of Exposure To 50/60 Hz Electric And Magnetic Fields (1989) Radiation Health Series No. 30 - ARPANSA 
• Biological effects of ELF - More background information and additional links from ARPANSA

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