hager Unibar H 800 A, System Manual

Page: 79 / 92

Installation, handling and maintenance
Technical changes reserved 79
7.3.8 Fitting tap-off units to plug-in (125 - 630 A)
The installation of units for plug-in is only possible on straight busbar elements
with plug-in.
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These tap-off units can be installed without switching off the busbar trunking
run. The measures for live working according to EN 50110 (VDE 0105-1) and
national regulations and standards must be observed for this (national
regulations may also prohibit live assembly).
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The tap-off units are plugged onto the plug-in and clamped to the straight
busbar element.
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Due to the large connection compartment, the maximum rated current is
restricted according to the number of plug-in on the busbar elements
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to a maximum of 250 A for 3 plug-in,
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to 630 A for 2 plug-in,
Step Action
1 Open the cover of the tap-off unit.
Result: Screw B is accessible.
2 Turn screw B until screws C have moved from position 2 to
position 1 and the front clamps have opened.
3 Turn screw D until the rear clamps have opened.
4 Place the tap-off unit on the plug-in provided on the straight busbar
element.