Moeller Rapid Link, Switching And Installation System, Page: 19 / 162

01/08 AWB2190-1430GB
Engineering
15
Flexible RA-C1 busbar
The flexible busbar RA-C1 is a 7-core flat cable (cross-section 2.5
mm
2
or 4 mm
2
) and has the following structure:
The flexible busbar is supplied through a round cable with a cross-
section
of up to 4 mm
2
through distribution module RA-C1-VM-7.
The distribution module can supply up to three flat cable segments
through two-tier terminals with round cables. You can also supply
400 V and 24 V through two round cables (M25 and M20
knockout entries).
For connecting the Rapid Link function units RA…/C1, a
connection socket for power plugs is available:
These connection sockets are mounted on the flexible busbar. To
make the contacts, simply tighten the seven screws. When
assembled and connected, they have degree of protection IP65.
For secure termination and for IP65 protection, fit end-pieces to
the open cable ends.
Current carrying capacity of the flexible busbar:
Supplied through distributor module RA-C1-VM-7, the 7
x
4 mm
2
flat cable has a maximum rating of 25 A at 50 °C. If they are laid
in a cable duct, the 400 V strands are rated 25 A at 40 °C. The
consumers must form a balanced load. The highest permissible
current for the 24 V DC strands is also 25 A. The flexible busbar
junctions RA-C1-VP-PLF and RA-C1-PLF have a maximum current
rating of 16 A.
The maximum continuous current of the 7
x
2.5 mm
2
-flat cable is
20 A at up to 40 °C ambient temperature and three live strands;
i.e. the 24 V DC strands carry a current of no more than 5 A.
The flat cable junction RA-C1-VP-SR must be used a feeder module
only in combination with the 7
x
2,5 mm
2
flat cable and can be
loaded with up to 20 A.
Round cable junction RA-C2
For the power bus you can also use conventional round cables (cross-
section 7
x
2.5 mm
2
or 7
x
4 mm
2
, outer core diameter < 5 mm,
flexible copper conductor to DIN VDE 295, class 5) with round cable
feeders RA-C2. The cable can have an external diameter of 10 to 16
mm.
The cable strands are inserted in the seven terminals and contacted
with screws. The junction socket prewired and conforms with the
DESINA specification.
In its assembled and connected state, it provides degree of
protection IP65.
At the free cable end, a blanking plug is fitted in the free sealing
insert.
Current carrying capacity of the round cable junction:
The current carrying capacity of round cables is indicated by the
manufacturer. The round cable junction can be loaded up to 25 A
at an ambient temperature of 50 °C.
Figure 8: RA-C1-7x... flat cable..
Figure 9: RA-C1-VM7 distribution module with RA-C1-DF
h Alternatively the RA-C1-7x4 can also be supplied through
the new terminal module RA-C1-AM-7:
• +40 °C: 3 x 23,5 A (400 V AC) + 2 x 10 A (24 V DC)
• +38 °C: 3 x 25 A (400 V AC) + 2 x 10 A (24 V DC)
Contacts are easily established with cage clamp terminals
for round cables and piercing screws for the flexible
busbar RA-C1-7x4.
Figure 10: Flexible busbar junction RA-C1-VP-PLF or RA-C1-PLF
M
L+
PE
N
L3
L2
L1
Figure 11: End piece RA-C1-END or RA-C1-END1
Figure 12: Round cable junction RA-C2-S1-4