1919
7.2.2. Special conditions
Installations over 1000 m a.s.l.
Possible within the limits permitted by reduction of the dielectric
resistance of the air.
Increase in the ambient temperature
Reduction in the rated current.
Encourage heat dissipation with appropriate additional
ventilation.
Climate
To avoid the risk of corrosion or other damage in areas:
• with a high level of humidity, and/or
• with rapid and large temperature variations, take appropriate
steps (for example, by using suitable electric heaters) to
prevent condensation phenomena.
For special installation requirements or other
operating conditions, please contact ABB.
7.2. Installation and service
conditions
The following Standards must be taken into
particular consideration during installation and
service:
• IEC60694/DIN VDE 0101
• VDE 0105: Electrical installation service
• DIN VDE 0141: Earthing systems for installations
with rated voltage above 1 kV
• All the accident prevention regulations in force in
the relative countries.
7.2.1. Normal conditions
Follow the recommendations in the IEC 60694 and
62271-100 Standards. In more detail:
Ambient temperature
Maximum
apparatus for indoor installation
Humidity
The average value of the relative humidity, measured for a period
The average value of the pressure of the water vapour, measured
The average value of the relative humidity, measured for a period
The average value of the pressure of the water vapour, measured
Altitude
<
Correct installation is of primary
importance. The manufacturer’s
instructions must be carefully studied
and followed. It is good practice to use
gloves for handling the pieces during
installation.
The areas involved by the passage of
power conductors or conductors of
auxiliary circuits must be protected
against access of any animals which
might cause damage or disservices.
7.1. General
—
7. Installation
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