If they are reversed, the emitted field level will abnormally high.
• equipment casings fitted with metal screen mounted the rear. These cables give their full effect when the screens are hooked the earth net
works..
• Make sure that areas where people spend time immobile are safe distance from potential field sources.6-2002 (international standard public, kHz range)
• European directive 1999/519/CE (public, 100 kHz range and above)
• European directive 2004/40/CE (workers, 100 kHz range and above)
• 2010 draft standard, ENIEC 62493 (lighting systems)
• EN50366 standard, superseded IEC 62233 2012 (domestic electrical appliances)
■The Solution Testing Measuring
■ Corrective action
A survey needs carried out determine the necessary corrective action.
• computer, printer, fax
• lighting
• high-voltage line, transformer, railway track, etc. They are designed automatically cut off the voltage causing electric fields when the last instru
ments lights are switched off. The electric field drained earth via the earth connection the screening.metrix.
• Connect and test the earths the electrical installation correctly
• For equipment not connected earth, you must check that the Ph/N are connected properly.
The intensity the electric fields inversely proportional the distance.
Low-frequency fields between and 100 kHz are harmful.
• automatic bipolar current cut-off devices.
These are devices positioned after the fuse corresponding the circuit the room
Detailed product brochures can downloaded from www.Applications/Illustrations
In housing and office buildings, there are many sources low-frequency electric fields which
contribute the overall electromagnetic pollution our day-to-day environment:
• distribution electrical energy housing and office buildings
• surge-protector power bar, electrical cables, etc. These are units positioned after the fuse correspond the circuit in
the room.fr
.
This helps reduce electrical radiation from the casing, cable and equipment.
There are various types equipment available for limiting electric fields:
• sheaths prewired with H07-VU screened phase wires
• screened wires and cables.
■ Standards
• Recommendations WHO ICNIRP (World Health Organization/International Commission Non-Ionizing
Radiation Protection)
• IEEE C95
