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5-1
5. CHANGING POWER SPECIFICATIONS
The display unit is set at the factory for connection to ship’s mains of 100 VAC. To power it by
110 VAC or 220 VAC, use step-down transformer PT-400, change the transformer taps on the
power unit as below and connect the ship’s mains directly.
POWER UNIT
F Photo No.1747
The unit is set at the factory
for 100 VAC.
0V 90V 100V 110V 0 90V 100V 110V
Ship's
Mains
For 110 VAC Ship's Mains
0V 90V 100V 110V 0 90V 100V 110V
Ship's
Mains
For 220 VAC Ship's Mains
0V 90V 100V 110V 0 90V 100V 110V
Ship's
Mains
For 100 VAC Ship's Mains
Figure 5-1 Changing tap connections on the power unit