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Incoming cubicle
We recommend a separate incoming cubicle beside the supply module cubicle for the
main AC fuses and switching and disconnecting devices. There is an example in section
Layout drawing of the supply unit
Example of the AC fuse cooling
The AC fuses must be cooled by forced cooling. If the fuses are not located in the same
cubicle with the rectifier module, the module cooling fan does not supply the cooling air for
the fuses but you must use a separate cooling fan. The following figures show an example
of the cooling system using a thermal switch for the air temperature monitoring near the
AC fuses.
MAIN SUPPLY
DISCONN. SWITCH
MAIN AC FUSES
=-Q1.1
=-F1.1
1
2
1
2
=-F1.2
3
4
1
2
=-F1.3
5
6
1
2
13
14
050/11D
on page 47.
1
2
TEMP. CONTROL
=-F6.1
1
2
=-X22
49
38
=-A51
5
6
7
-XD24
#
Description
1.
Thermal switch
2.
Cooling fan
Main Contactor
OPTIONAL
=-Q2.1
1
2
3
4
5
6
020/13D
=-Q21
001/4C
=-Q1.1
=-Q2.1
001/5A
020/13D
=-S21
15C
8
1
2
3
4
5
-XDI
DCCOM
S7
Cabinet construction 41
;1L11
;1L21
002/2B
;1L31
6
7
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