thuba BVS 20 ATEX E 105 Serie E-Manual page 15

Manual BVS 20 ATEX E 105 X
No. of single- or multicore conductors
Minimum distances of terminals blocks
Conductor from wall in the case of
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 SAtb/SAtc explosionproof switchgear
assemblies, only those cable and conductor
entries and plugs that possess an EU type-
examination certificate (Category 2D or 3D
according ICE Equipment Protection Level Db or
Dc) issued by a European Notified Body as per
IEC 60079-0 and IEC 60079-31 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.
Edition August 2022
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
端子和外壳壁的最小间距
导线截面
2
[mm ]
1 根导线
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
表3. 接线板和外壳壁之间的最小间距和进入外壳的导体数
量关系
4.3 电缆和导线引入
SAtb/SAtc 型防爆开关组件，只有具有EU型式
测试认证的那些电缆和导线引入和插头（根据
IEC 设备防护等级Db 或Dc 的种类2D 或3D），
符合IEC 60079-0，IEC60079-31，经欧洲认证
机构确认的组件方可使用。
电缆和导线引入，用插头封闭特别预备的孔口。
电缆和导线的引入必须是防止自我松脱，确保电
缆和导线的引入点永久密封。
电缆格兰之间的间距是这样的 ，可以使用一个
扭矩扳手来固定电缆和导线引入的
格兰， 并拧紧这些电缆密封件在外壳壁上。
在 工 厂 里 ， 电 缆 和 导 线 引 入 配 备 CEAG 型 号
GHG 960 923 P...电缆格兰。电缆和电线的尺
寸、夹紧范围以及扭矩如附件A 中的表格所示（
第22 页）。
如果安装了其他电缆和导线引入，所需的扭矩和
电缆直径请参见适当的手册。
引入单或多根导线
2 根导线 3 或更多导线或
2 并排连接
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
thuba Ltd., CH-4002 Basel
Switzerland
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