12 CONVAC VACUUM CONTACTOR INSTALLATION AND OPERATION INSTRUCTION
—
5. Installation
5.1 General
Correct installation is of primary importance. The
manufacturer’s instructions must be carefully
studied and followed. It is good practice to use
protecting gloves during installation.
The areas involved in the primary circuits and
auxiliary circuits must be protected against
access of any animals which might cause damage
or disservices.
The contactor enclosure must be installed in a
clean, dry and good ventilation place. 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 capacitive
load, make sure that there is a heater to keep the
humidity down and of suitable size for the
compartment where the contactor is installed.
The contactor must always be installed
associated with a suitable protection device (e.g.:
fuses).
The fixed version of ConVac contactors must be
installed by the customer so as to guarantee a
minimum degree of protection of IP2X.
5.2 Installation and operating conditions
The following standards must be taken into
particular consideration during installation and
service:
• GB/T 14808 Alternating-current high-voltage
contactor
• GB/T 11022 Common specification for
high-voltage switchgear and control-gear
standards
5.3 Normal conditions
Follow the recommendations in the GB/T 11022,
GB/T 14808, IEC 62271-1 and 62271-106 standards.
In more detail:
Ambient temperature:
• Maximum +40℃
• Average maximum over 24 hours +35℃
• Minimum apparatus for indoor installation -15℃
Humidity:
• The average value of the relative humidity,
measured for a period longer than 24 hours,
must not exceed 95%
• The average value of the water vapor pressure,
measured for a period longer than 24 hours,
must not exceed 2.2 kPa
• The average value of the relative humidity,
measured for a period longer than 1 month,
must not exceed 90%
• The average value of the water vapour pressure,
measured for a period longer than 1 month,
must not exceed 1.8 kPa
Altitude:
≤1000 m.
5.4 Special conditions
>1000 m above sea level.
With the increase of altitude, the insulation
performance of air may decrease，thus the
impact of external insulation need to be taken
into account while using in high altitude areas.
Climate－temperature fluctuations
In order to avoid the risk of erosion and other
damages to the product in areas of high-humidity
or large temperature fluctuations, necessary
measures (for example, fitting a suitable heater)
shall be taken to prevent condensation.
For special installation requirements or other
operating conditions, please contact ABB.
To Next Page
Loading...
Need help?
General
