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Centre breaks |
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Type CBD |
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rated voltage [kV] |
72,5 - 550 |
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rated current [A] |
1250 - 4000 |
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rated short-time current 3s [kA] |
up to 63 |
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Centre break disconnectors type CBD consists of three poles.
Each pole consists of a frame, two rotating support insulators
and a main blade that moves horizontally. The main blade
consists of a U-shaped tube, in which the main contacts
and the rotating contacts are installed. The rotating
contact consists of a silver-plated copper pin and a
bronze housing. Silver-plated bronze balls, which are
pressed against these two parts by means of a stainless
steel spring, ensure that the current is transferred
from the pin into the housing. This contact construction
is sealed and maintenance free. All CBD are for outdoor use.
The disconnectors
can be equipped with insulators in accordance with DIN,
IEC or other specifications.
Centre break disconnectors
are operated single-pole or three-pole by means of a motor or manual operated
drive mechanism inside an IP54 housing, with torques
up 850Nm and including up to 10 auxiliary contacts for
position indication.
Optional earthing switches can be build-on to the horizontal double break disconnector
to the right hand side and/or to the left hand side.
The disconnectors are
designed and tested in accordance with latest IEC specifications.
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Advantages |
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More than 70 years experience |
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Durable and reliable design |
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Pre-assembled and adjusted in our
works for quick installation |
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Easy installation and adjustment
at site without special tools |
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Suitable for installation in areas
with severe climatic conditions |
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Virtually maintenance free |
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Long service life |
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Some
Technical Features |
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Square
tube frame with bearing housing and the turntable
installed in the centre |
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Turntable
supported by two roller bearings with bearing
housing sealed and filled up with grease |
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Silver-plated
copper contacts installed inside the main blade |
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Sealed
contact construction |
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Self-cleansing contacts |
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Optional anti-corona shields depending
on voltage rating |
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Hot-dip galvanized steel parts |
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