GENERAL INSTRUCTIONS FOR CTC
UNDER POLE COMPACT
TRANSFORMER SUBSTATION
IG-086-GB
version 02
11.07.2007
Page 17 of 20
If the transformer is fitted with open porcelain bushings, as per the standard UNE-EN 50180,
it is recommended to make the connection to the M12 bolt of the bushing with the connecting
points.
3.8.2. Connection between the Transformer and the LVB
It is recommended to make the connection between the transformer and the LVB with
0.6/1 kV extraflexible copper wire of adequate cross-section with hexagonal connectors, as
per DIN 46.235.
The connection is made directly on the busbar with M10 screws
[4]
.
3.8.3. Connection of the Cables to the LVB Outgoing
The LV cable outgoings are made with the LVB’s BTVC bases screws.
[4]
To identify the phases, pay attention to the colour code on the cables and on the bars.
Canalizacion
cables de AT
Canalizacion
cables de BT
600
17
70
2550
34
5
72
7
69
8
390
25
5
91
5
60
0
Tuberia ligera de material
termoestable °15
para acceso cables MT y BT
0,80m.
MV
Cables
LV
Cables
Dimensions in millimetres
Figure 3.12
:
Dimensions of the excavation and MV and LV mains
Figure 3.13
:
MV and LV mains
Light pipe made of º15 heat-
resistant material for MV and
LV cable access
800
Dimensions in millimetres
2550
600
390
255
345
698
600
1770
915
727
