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D-91
Connection of horizontal to
vertical busbars
Additional informations
Horizontal busbars can be connected to vertical busbars (Linergy or flat bars) in two
ways:
in a duct (by a direct connection ordered from the catalogue)
in the rear (with part of the connection to be fabricated by the installer).
b
b
DD383905
DD383906
5 mm thick horizontal busbars
can be connected to vertical busbars using
connection plate 04634 (
y
1000 A) or 04635 (> 1000 A) after drilling holes in the
horizontal bars.
10 mm thick horizontal busbars
can be connected to vertical busbars in 2 ways:
using connection plate 04636 (
y
1600 A) or 04637 (> 1600 A) without drilling holes
in the horizontal bars
or with a screw and socket assembly (04645) designed for assembly on a busbar
that has already been mounted.
This bolted solution requires:
holes drilled in the bars (Ø16 mm) for diagonal mounting of the sockets and
screws
conformity with the following mounting rules:
respect the overlap length (2.5 to 5 times the bar thickness)
tighten to a torque of 50 Nm
fit the recommended number of screws, depending on the bar width as explained
below.
b
b
b
b
v
v
v
Screw + socket
(cat. no. 04645).
Connection plate
(cat. no. 04635).
DD383907
DD383908
In practice, the real contact area is limited to regions in which the pressure is
applied effectively.
In a bolted overlap assembly, these areas are made up of the areas
adjacent to the bolts, and more precisely under the washers.
Salt spray tests have demonstrated these contact areas.
The number of screws thus determines the effective cross-sectional area through
which the current flows,
which corresponds to the area under the washer (minus the screw
hole).
This cross-section area must be close to that of the bar.
Controlled temperature rise
Whatever the connection solution used, the quality and reliability of the contact is
guaranteed, in particular with respect to temperature rise, as long as assembly is
carried out according to our recommendations.
Practical information