The accurate name for power frequency electromagnetic radiation should be the strength of power frequency electric field and power frequency magnetic field. The standard frequency for civil and industrial electricity in China is set at 50Hz (other countries also have 60Hz), so 50Hz is called power frequency. When there is current passing through wires or electrical equipment, these appliances will induce a magnetic field, and its strength will increase with the increase of current intensity. Power frequency electromagnetic field is an induced magnetic field, usually measured in Tesla (T), according to national standards, at 100 microseconds（ μ T) The following is the relative safety range
Source of power frequency electromagnetic radiation detection:
Substations, power stations, distribution rooms, high-voltage wires, hair dryers, televisions, computers, refrigerators, and other electrical appliances at home
Hazards of power frequency electromagnetic radiation detection:
Changes in magnetic fields in the environment reduce the secretion of melatonin and enhance the awakening effect of EEG, leading to insomnia and difficulty falling asleep.
Easy to awaken at night
Power frequency electromagnetic radiation testing project:
Testing project
Executive standard name and number
Electromagnetic radiation
"Public places hygiene inspection methods - Part 1: Physical factors" Broadband omnidirectional field intensity meter method GB/T 18204.1-2013 (13)
Power frequency electromagnetic field intensity
Measurement of power frequency electric field GB/T12720-1991
Measurement of physical factors in the workplace Part 3: Power frequency electric field GBZ/T 189.3-2007
Technical specification for environmental impact assessment of electromagnetic radiation in 500kV ultra-high voltage transmission and transformation engineering HJ/T 24-1998
High voltage AC overhead transmission lines Measurement Method for Power Frequency Electric Field and Magnetic Field in Substation DL/J 988-2005
Power Frequency Electric/Magnetic Field
Electromagnetic Environment Monitoring Method for AC Transmission and Transformation Station Engineering (Trial) HJ681-2013
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China