.-
Two main coils are wound over stator core. Each main coil outputs half the rated power at the lower
voltage
(11OV
or
120V).
These main coils are wound to be in the same phase. The full power switch
reconnects these main coils in parallel or in series.
Fig.
5-10
shows a circuit diagram. When the full power switch
is
set for single lower voltage indication
(11 OV
or
120V),
the switch position is as indicated by the lower solid line in the diagram. Fig.
5-11
is a
simplified representation of this circuit, showing the
two
main coils connected in parallel.ln this case, the
higher voltage
(220V
or
240V)
at Rec.
3
cannot be taken out. Rec.
2
for the lower voltage
can
output
up
to the rated power (up to
30A
if
the rated current is over
30A),
and Rec.
1
can
output
up to a total of
15A.
When the full power switch is set for double voltage indication
(11OV/22OV
or
120V/240V),
the switch
position is
as
indicated by the upper dotted line in Fig.
5-1
0.
Fig.
5-1
2
is a simplified representation of this
circuit, showing the
two
main coils connected in series. In this case, power can be taken simultaneously
from the receptacles for the
both
voltages. Rec.
3
for the higher voltage can output up to the rated power,
but Rec.
1
and Rec.
2
for the lower voltage can output only up to half the rated power each.
Table
5-4
is a summary
of
the above explanation. Select the proper output voltage by full power switch in
accordance with the appliance to be used.
-
13-
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