ENANCER Electrónica S.A.
Page 7 of 17
Rua Max Grundig 9
4705-820 Braga Portugal [email protected]
Tel: +351 253 221 484 www.only-smartbuildings.com
Single phase supplies with ONLY 1 switchboard
As we have seen, to avoid imbalances in the RCCB, all circuits with ONLY commands must be protected by the
same RCCB. This is simple to accomplish in an installation with ONLY one switchboard, concentrating everything
that is lighting, shutters, security central and climatization commands in one RCCB. The other loads can be
concentrated in another RCCB.
The scheme of this type of switchboard should be as follows:
The connections of the switchboard should be as follows:
In the switchboard, a D-BUSDRV is used, a BUS driver without any connection to other switchboards.
The maximum number of modules that the D-BUSDRV can feed is 50. Normally, one BUS driver for a single
phase installation with one switchboard is sufficient.
10A 10A 6A 6A 6A 6A
LIGHT1 LIGHT2 SHUTT SEC
CLIMA ONLY
TO FLOOR CIRCUITS WITH ONLY
N
N
RCCB
FROM GENERAL
CIRCUIT BREAKER
N
N
RCCB
TO OTHER
CIRCUITS WITHOUT ONLY
B B B N L
D-BUSDRV
Sin
gle
ph
as
e s
up
ply
Lig
htin
g 1
Lic
htin
g 2
Sh
utte
rs
O
N
LY
se
cu
rity
ce
ntr
al
O
N
LY
cli
m
atiz
atio
n
co
m
m
an
ds
O
N
LY
BUS
D
riv
er
D
-BUS
D
R
V
–
2
m
od
ule
s
D-BUSDRV
Wa
ll s
oc
ke
ts
Sto
ve
Wa
sh
ing
m
ac
hin
e
32A
25A
25A
10A 10A 6A 6A 6A 6A
16A 16A 16A