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| Cable tray and cable-specific requirements
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5.13.1 Cable Trays
a) cable tray, elbow, T-shaped connector, such as the
annex to be completed in the factory. Cable tray
Required by the hot dip
plating, and the Bo-hole plate made of quality.
b) install the tray when the
tray was cut to be applied in cutting the Agency for the protection of
zinc-containing paint.
c) pallets to be a certain strength and rigidity to
protect the installation of the cable tray.
d) not appear detrimental to the
cable tray cable insulation and protection layer of the sharp edge convex or
prominent stria
Part, so as to avoid damage to cable insulation and
protection layer.
e) to install cables in the cable tray before the tray to
be completely cleared of debris.
Diameter, wall thickness
26mm 3.5mm
32mm 3.5mm
42mm 4.0mm
55mm 4.0mm
30
f) the top of the
cable tray to be enough space left to facilitate cable installation and
maintenance. When the cable care
Set to fly in under the ceiling, wall or
structure of the wall must have been approved in the hot-dip galvanized steel
Support bracket or hook.
g) When the cable with other professionals
operating in parallel, the stent should be used to support a dedicated cable
tray.
h) when the two intersect vertical cable tray should be used outside
the connector or junction piece in order to avoid access
Any point on the
situation down or bending. Outside the connector or splice film should be the
minimum to 2
Round rust-proof screws installed in each cable tray within the
tray to the fixed junction.
i) all the bending and a T-connected spaces
there should be a minimum bend radius of 50mm. Cable tray of
By bending
should be allowed to carry the largest cable bend radius, or in line with the
"low-voltage distribution
Design specifications "GB50054-1995 and" civil
electrical design specifications "JGJ/T16-
1992 within the stipulated limit
bend radius.
j) the entire cable tray should be strong to be installed at
the building structure, the tray should be separated by the structure of the
smallest
13mm distance.
k) should be separated by a fixed support and
adequate support from the cable tray, especially in curved spaces and T-then
I position.
l) when the cable tray through the structure of the mobile /
expansion of contacts, the tray should be the physical separation, the separated
Distance should be mobile / expansion of the distance between the cracks or
more. In order to maintain the continuity of grounding should be 1
Gen-150mm
² copper conductor across the gap soft and firmly connected at both ends of the
tray.
m), such as cable tray need to pass through, or across the edge of
tray shall be low smoke zero halogen ring or packaging
売outside the
protection of cable from the sharp edge of harm to donate.
n) when the cable
through the walls of the hole, to be equipped with supporting accessory tray to
support the cable over the wall.
o) the need for all cable tray back side
(return-edge).
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