ABB V-Contact VSC Series, Installation And Service Instructions Manual

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5.3. Normal conditions
Follow the recommendations in the IEC 60694
and 60470 Standards. In more detail:
Ambient temperature
Maximum + 40 °C
Average maximum over 24 hours + 35 °C
Minimum (according to class – 5), – 5 °C
apparatus for indoor installation
Humidity
The average value of the relative humidity, mea-
sured for a period longer than 24 hours, must
not exceed 95%.
The average value of the water vapour pres-
sure, measured for a period longer than 24
hours, must not exceed 2.2 kPa.
The average value of the relative humidity, mea-
sured for a period longer than 1 month, must
not exceed 90%.
The average value of the water vapour pres-
sure, measured for a period longer than 1
month, must not exceed 1.8 kPa
Altitude
< 1000 m above sea level.
5.4. Special conditions
Installations above 1000 m a.s.l.
Possible within the limits allowed by reduction
of the dielectric resistance of air.
Climate - Increase in temperature
In order to avoid the risk of corrosion or other
damage in areas with high humidity and/or rapid
large fluctuations in temperature, take appro-
priate measures (for example, using suitable
electric heaters) to prevent any condensation
phenomena.
For special installation requirements or other
operating conditions, please contact ABB.
5. Installation
5.1. General
Correct installation is of primary importance.
The manufacturer’s instructions must be care-
fully studied and followed. It is good practice to
use gloves for handling the pieces during in-
stallation.
The areas involved by the passage of
power conductors or conductors of
the auxiliary circuits must be pro-
tected against access of any animals
which might cause damage or disser-
vices.
The contactor enclosure must be installed in a
clean, dry and heated place with good ventila-
tion. It must be easily accessible for cleaning
and inspection, and must be levelled, placed
on the supporting foundations and securely
fixed into position.
When the contactor is connected to a capaci-
tive load, make sure that there is a heating ele-
ment to keep the humidity down and of suit-
able size for the compar tment where the
contactor is installed. The contactor must al-
ways be installed associated with a suitable
protection device (e.g.: fuses).
The fixed version of the V-Contact VSC
contactors must be installed by the
customer so as to guarantee a mini-
mum degree of protection of IP2X.
5.2. Installation and operating condi-
tions
The following Standards must be taken into par-
ticular consideration during installation and ser-
vice:
– IEC60694/DIN VDE 0101
– VDE 0105: Operation of electrical plants
– DIN VDE 0141: Earthing systems for electri-
cal installations with rated voltage higher than
1 kV
– All the accident prevention regulations in force
in the relative countries.
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