Diagnostics And Remedies; Remedies Related To The Electric Installation - Metrix BioTest Manual De Instrucciones

5.

DIAGNOSTICS AND REMEDIES

These testers measure the "RMS" intensity of electric fields in
V/m and check them in compliance with current and future
standards and directives:
•
WHO / ICNIRP recommendations (World Health Organisation)
Guide for defining the limits of exposure to electric, magnetic and
electro-magnetic fields - publication: n° 182 -1st quarter 2001.
•
IEEE C95.6-2002 (International standard - Public, domain 0-3 kHz)
Safety levels covering the exposure of persons to electro-magnetic
fields from 0 - 3 kHz - publication: October 2002.
•
European directive 1999/519/EC (Public, domain 0-100 kHz and
higher). Household appliances and assimilated electro-magnetic
fields. Assessment and measurement methods - publication: July
2004, October 2006.
•
European directive 2004/40/EC (Workers, domain 0 - 100 kHz and
higher)
Minimum health and safety rules for the exposure of workers to
risks due to physical agents (electro-magnetic fields) - publication:
April 2004.
•
Draft standard 2010, EN IEC 62493 (Lighting systems)
Assessment of lighting equipment for human exposure to electro-
magnetic fields - publication: to be published.
•
EN 50366 standard, then IEC 62233 in 2012 (Household electric
appliances)
Methods of measuring electro-magnetic fields emitted by
household appliances and assimilated in relation to human
exposure - publication: January 2007.
5.1.

Remedies related to the electric installation

1. Connect and check the electrical installation's earth correctly.
2. Check the levels of emitted electric fields (see § 5.3).
3. For appliances that are not earthed, check that the Ph/N
connection is made correctly. If it is inversed the level of the
fields will be much higher
(e.g.: bedside lamp with a single pole switch).
4. Use devices to limit electric fields:
• pre-cabled sheaths with shielded H07-VU phase wires.
• shielded wires and cables. These cables are most efficient
when the screens are connected to the earth network. The
electric field is directed to the earth using the shielding
connected to the earth.
• equipment casing fitted with a metal screen at the rear of the
casing. This is used to reduce electric radiation from the
case + cable + equipment.
• an automatic two pole current cut-off device. This is a box
that is fitted after the fuse corresponding to the room's
circuit. It is designed to automatically cut-off electric voltage
causing electric fields as soon as the last appliance or light
is switched off. It switches power back on whenever a switch
in the room is used.
5. Place the potential sources of fields at a safety distance from
the zones where persons gather for long periods of time or vice
versa (see examples § 5.2).
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Chapter II
VX0003 / VX0100