hager KEH31D00S3LMA, Системное руководство

Страница: 84 / 92

Comments for specifications for tenders
84 Technical changes reserved
8 Comments for specifications for tenders
Basic description of busbar trunking systems 800 - 4000 A
Busbar trunking system must be supplied and fitted as a low voltage switchgear
combination conforming to IEC / EN 61439-1 and IEC / EN 61439-6 in a
ready-to-connect implementation.
The following descriptions are integral parts of the quotation and contract. They
must be taken into account in the descriptions of the individual installations and
equipment, even if they are not mentioned in any further detail.
The busbar trunking must be suitable:
-
For energy transport
-
For energy distribution as a wide area supply
with protection type IP55/IP65
-
For horizontal and vertical installation without reduction in current-carrying
capability
The busbar trunking system must consist of standardized system building
blocks, e. g.:
-
Straight busbar elements / busbar boxes with and without plug-in
-
Feeder units for transformer, distributor and cable feeders
-
Changes of direction such as elbows, knees, Z-elements, T-elements, etc.
-
Tap-off units (not with protection type IP68)
-
Accessories
All straight busbar elements are available ex-factory in lengths up to a maximum
of 3 m. Flexible changes of direction and changes of direction implemented as
cable connections are not permitted.
If required, it must be possible to equip the busbar trunking system with an
asbestos-free fire barrier tested to EN 1366-3 for wall or ceiling penetrations,
which optionally meets fire resistance class EI90 or EI120 according to
EN 13501.
The housing consists of painted steel sheet (e.g., RAL 7035).
The individual system elements are connected by using a current state-of-the-art
single bolt clamp. The torque of approx. 60 Nm required for the clamped
connection must be indicated by the outer part of the shear-off bolt shearing off.
The busbar bars must be made of aluminium or copper and be insulated over
their entire length. Aluminium conductors are coated over their entire length with
zinc, copper and tin. The insulation coating consists of an F-class polyester tape.
The bar cross-sections must not be less than the values specified in the technical
data.