hager KEH31D00S3LMA, System Manual

Page: 69 / 92

Installation, handling and maintenance
Technical changes reserved 69
7.3 Assembling the unibar H system
The fastening spacing is 3 m for the upright installation position and 2 m for the
flat installation position. For double systems (in aluminium rails from 2500 A,
identifier D ) the fastening spacing is always 2
m.
If straight busbar elements are installed in the horizontal direction with the
conductors flat, the neutral conductor must be in the lower position. Since the
busbar element is otherwise position-independent, there is no derating for
vertical installation.
-
Follow the installation drawing and the numbered, marked sequence.
-
busbar elements, connection joints and feeder units are installed and
disassembled with no voltage applies as a matter of principle (disconnected
and secured from being switched on again).
7.3.1 Hangers
To hang the straight busbar elements, two by two standard hangers are fitted to
the elements with the following distances:
Direction Installation
position Distance between the hangers
Horizontal Flat 2 m for straight busbar elements
-
For single body
- For Double body systems (from 2500 A up to 4000 A)
Horizontal Upright
- 3 m for straight busbar elements with single body
(< 2500 A for aluminium, < 3200 A for copper inner
conductors)
- 2 m for straight busbar elements with double body
systems (from 2500 A for aluminium / 3200 A for
copper inner conductors)
Vertical Flat 2 m for straight single and double bodies
Vertical Upright 2 m for straight single and double bodies
A profile rail from the standard hanger can be replaced by a bracket (e. g.,
KTAS System from Niedax). As a result, a change to the size of the threaded rods
(standard M10) depending on the hole size of the bracket used (for KTAS: M8)
may be necessary.