Carbolite GHA Installation, Operation & Maintenance Instructions Manual page 17

3-phase "universal" wiring (models -/600 and over, & /-450 3-phase)
7.7
Filters (if fitted)
N
L
N
L
N
L
F1
F2
Fuses F1 are always present in this wiring design.
Fuses F2 are always present in G range models.
Fuses F3 are absent in standard G range models: wire size not reduced.
3-phase + neutral
Supply Fuses or
Terminals EMC filters
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
200V – 240V
and single phase in the range
200V – 240V
See also section 8.2 if there is a voltage
change.
MF48 -1.18
Instrument Switch
safety
switch
if fitted
overtemp.
controller
thermocouple
temperature
controller(s)
thermocouple
N
Circuit no. 1
L
N
Circuit no. 2
L
N
Circuit no. 3
L
Contactors
(3)
coil coil
SSR
SSR
SSR
Not
used
Not
used
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
G range
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
17