Carbolite CWF Installation, Operation & Maintenance Instructions Manual page 13

7.4 3-phase "universal" wiring
Filters
N
L
N
L
N
L
F1
F2
Fuses F1 are always present in this wiring design.
Fuses F2 could be absent in some circumstances, if the circuit does not exceed 10A.
Fuses F3 are present if the circuit exceeds 25A, but otherwise are usually absent.
3-phase + neutral
Supply
Terminals
L1
L2
L3
N
PE
A model made to this diagram can be
converted by the customer between the
following supply voltages:
between 3-phase + neutral in the range
380/220V – 415/240V
and 3-phase delta in the range
220V – 240V
and single phase in the range
220V – 240V
208V model: convertable from 208V delta
to 208V 1-phase
7.5
MF02
Supply light &
Instrument Switch
safety
switch
overtemp.
controller
temperature
controller
Fuses or
EMC filters
N
Circuit no. 1
L
N
Circuit no. 2
L
N
Circuit no. 3
L
Contactors
(2 or 3)
coil coil
if fitted
thermocouple
SSR
SSR
thermocouple
SSR
Not
used
Not
used
CWF, BWF, RWF
F3 F3
e
l
e
m
heat
heat
e
on
on
n
t
(s)
F3
F3
3-phase delta
Supply Fuses or
Terminals EMC filters
N
L1
L
L2
N
L3
L
N
N
L
PE
1-phase
Supply Fuses or
Terminals EMC filters
N
L1
L
L2
N
L3
L
N
N
L
PE
F3
e
e
l
l
e
e
m
m
heat
e e
on
n n
t t
(s)
(s)
F3
Circuit no. 1
Circuit no. 2
Circuit no. 3
Circuit no. 1
Circuit no. 2
Circuit no. 3
13