Carbolite CF 15 - CF 60 - Manual (Page 16)

16 MF28 3.08
3-phase without neutral (delta – e.g. 208-240V)
7.3 3-phase without neutral (star – e.g. 380V or above)
7.4 Higher Voltages (e.g. 440V, 480V 3-phase)
The diagram above (7.3) normally applies, with neutral (if present) not being used. For single
phase models of 254V or above, diagram 7.1 applies except that a control circuit transformer is
included as in diagram 7.3.
e
l
e
m
e
n
t
(s)
e
l
e
m
e
n
t
(s)
Instrument Switch
coil
temperature
controller
thermocouple
overtemp.
controller
thermocouple
safety
switch
SSR
heat
on
F3
F1
F2
F3
L2
L3
L1
PE
SSR
SSR
F3
heat
on
F3
e
l
e
m
e
n
t
(s)
heat
on
F3
F3
if fitted
contactor
Filter (if fitted)
element o/temp
controller
thermocouple
e
l
e
m
e
n
t
(s)
element o/temp
controller
thermocouple
e
l
e
m
e
n
t
(s)
e
l
e
m
e
n
t
(s)
F1
L2
L3
F2
L1
PE
e
l
e
m
e
n
t
(s)
transformer
coil
temperature
controller
thermocouple
overtemp.
controller
thermocouple
safety
switch
SSR
heat
on
F3
SSR
SSR
heat
on
F3
heat
on
F3
Filter (if fitted)
if fitted
contactor
47k 47k 47k
F2
Note: in this configuration the fuses F2 on
the supply side of the transformer may be
GEC Safeclip, not 32 x 6mm glass as stated
in section 8.1.
Instrument Switch