GEN7iB
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SAFETY MESSAGES
SAFETY MESSAGES
2
2.9 Operation of electrical installations
Working on, with, or near electrical installations implies certain dangers. These electri-
cal installations are designed for the generation, transmission, conversion, distribution
and use of electrical power. Some of these electrical installations are permanent and
xed,suchasadistributioninstallationinafactoryorocecomplex,othersaretem-
porary, such as on construction sites, and others are mobile or capable of being moved
either while energized or while neither energized nor charged.
The European Standard EN 50110-1 sets out the requirements for the safe operation
of and work activity on, with, or near these electrical installations. The requirements
apply to all operational, working and maintenance procedures. The European Stan-
dard EN 50110-2 is a set of normative annexes (one per country) which specify either
the present safety requirements or give the national supplements to these minimum
requirements at the time when this European Standard was prepared.
High voltage and qualiîž’ed personnel
For measurements falling within the scope of the EN 50110-1 and EN 50110-2, please
note that working with voltages above 50 V AC RMS or 120 V DC may only be con-
nectedbyaqualiedtechnicianorapersontrainedinelectricalengineeringand
supervisedbyaqualiedtechnician.(Qualiedtechniciansarepersonswho,dueto
their specialist training, knowledge and experience, as well as their knowledge of the
relevant provisions, are able to assess the work with which they are entrusted and
detectpossiblerisksandwhohavebeennominatedasqualiedtechniciansbytheir
employer).
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