hager KEH31D00S3LMA, System Manual

Page: 15 / 92

Construction and characteristics
Technical changes reserved 15
Connection joints for protection type IP68
Connection joints in busbar elements with protection type IP68 (cast resin
system) are formed with essentially the similar joint block as for protection type
IP55.
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The torque for the clamping block in the connection joints for adjacent
busbar elements is approx. 60 Nm, at which point the outer part of the
shear-off bolt shears off.
The flanges are fitted with seals and for protection type IP68 provide openings for
filling the cast resin mixture.
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Later checking of the tightening torque of the single bolt clamp(s) (the clamp)
is not planned for here.
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Busbars with protection type IP68 are intended exclusively for energy
transport.
3.4.2 Straight length busbar elements
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Available with plug-in (IP 55) or
without plug-in (IP55 / IP65 or IP68 (cast resin system))
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Available without plug-in in standard lengths 1 m, 2 m , 3 m
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Available without plug-in in selectable lengths 410 to 3000 m
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With plug-in: Straight length busbar elements of protection type IP55 can
support up to 6 plug-in on each 3 m length (depending on the rated current,
see chapter Product selection )
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Plug-in on one side (3 plug-in)
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Plug-in on both sides, offset (4 plug-in, 2 plug-in each on each
137-mm side)
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Plug-in on both sides (6 plug-in, 3 plug-in each on each 137-mm side)
3.4.3 Changes of direction
Changes of direction are implemented with standardized system components.
Standardized system components are available with various rated currents (see
chapter Product selection ):
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Elbows/knees: Horizontal elbows, vertical knees, Z-elements horizontal,
Z-elements vertical, offset elbows/knees
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T-elements(T-boxes): Horizontal T-elements, vertical T-elements
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Variants with different positions of the phases / N conductor
Flexible changes of direction and changes of direction implemented as cable
connections are not permissible.