Tsurumi TPG-2900H-DX - Manual (Page 13)

(3) Full Power Switch (Dual Voltage Type) (refer to Figure 4)
(a) The full power switch provides both 120V and 240V dual voltages at full rated power.
The full rated power will be available from one 120V receptacle and one 240V recep-
tacle.
(b) Two main coils are wound over core of the stator. Each main coil outputs half the
rated power at the lower voltage (110V or 120V). These main coils are wound so they
are in the same phase. The full power switch reconnects these main coils in parallel
or in series.
(c) Refer to the circuit diagram in Figure 4. When the full power switch is set for single
lower voltage indication (110V or 120V), the switch position will be as indicated by the
lower coils line in the diagram.
Figure 4: Full Power Switch Circuit Diagram
(d) Refer to Figure 5 for a simplified diagram of the circuit. The two main coils are shown
in parallel. In this case, the higher voltage (220V or 240V) at Receptacle (Rec.) 3 is
not available. Rec. 2 for the lower voltage is available up to the rated power (up to
30A if the rated current is over 30A), and Rec. 1 is available up to 15A. When the full
power switch is set for double voltage indication (110V/220V or 120V/240V), the
switch position is indicated by the upper dotted line in Figure 8.
(e) Refer to Figure 6 for a simplified diagram of the circuit. The two main coils are shown
connected in series. In this example, power is simultaneously available from the
receptacles for both voltages. Higher voltage receptacle, Rec. 3, has power available
up to rated power, however, Rec. 1 and Rec. 2 for the lower voltage can output only
up to the rated power of each receptacle.
(f) Table 1 summarizes in tabular form the power available, or not available, depending
upon the position of the full power switch.
Description and Operation Page 10
Tsurumi’s Operation, Service, and Repair Manual
MC1
MC2
Rec. 1
120V
(or 110V)
120V
(or 110V)
120V/240V (or 110V/220V)
240V (or 220V)
Rec. 3
Rec. 2
120V (or 110V)