thuba SAnR Manuel page 17

Manual BVS 20 ATEX E 103 X / BVS 20 ATEX E 104 X
No. of single- or multicore conductors
Minimum distances of terminals blocks
from wall in the case of
Conductor
cross
1 conductor
section
2
[mm ]
1.5 20 mm
2.5 20 mm
4 20 mm
6 20 mm
10 25 mm
16 30 mm
25 40 mm
35 50 mm
50 60 mm
70 75 mm
95 100 mm
120 125 mm
150 140 mm
185 150 mm
240 160 mm
Table 3: Minimum clearance between terminal blocks
and enclosure wall as a function of the num-
ber of conductors entering the enclosure
4.3 Cable and conductor entries
For type SAnR explosionproof switchgear
assemblies, only those cable and conductor
entries and plugs that possess an EU type-
examination certificate (Category 3G according
ICE Equipment Protection Level Gc) issued by a
European Notified Body as per IEC 60079-0,
IEC 600079-7 or IEC 60079-15 may be used.
Cable and conductor entries may only be fitted
in specially prepared holes that are closed off
with plugs.
The cable and conductor entries must be
installed so as to prevent self-loosening and
ensure permanent sealing of the cable and con-
ductor entry points.
The spacing between the cable glands is such
that a torque wrench can be used to secure the
gland bodies of the cable and conductor entries
in the enclosure wall and to tighten the seals aro-
und the cables.
In the factory the cable and conductor entries are
Edition February 2021
Copyright
brought in
2 conductors 3 or more
conductors or
2 side by side
20 mm 20 mm
20 mm 20 mm
20 mm 25 mm
25 mm 30 mm
30 mm 40 mm
40 mm 50 mm
50 mm 60 mm
60 mm 75 mm
75 mm 100 mm
100 mm 125 mm
125 mm 140 mm
140 mm 150 mm
150 mm 160 mm
160 mm 170 mm
170 mm 180 mm
13
thuba Ltd., CH-4002 Basell
Switzerland