GE Vivid 7 - Page 476

GE HEALTHCARE
DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL
5 - 130 Section 5-11 - Power Distribution
5-11-2-2 The AC Transformer
The AC Transformer is the galvanic barrier between the rest of the scanner and the on-site AC Mains.
Input voltage to the transformer can be either 230 VAC or 115 VAC. The transformer has two 115 VAC
primary windings which are series- or parallel coupled depending on input voltage (see Figure 5-83).
Each of the primary windings has one thermal protection device in series with the windings, which will
open if internal temperature exceeds 125
o
C.
The plug on the cable to the AC Transformer is positioned different for the two AC Mains voltages, see
Figure 5-84 "Connector Pin-out - AC Connectors on AC Controller" on page 5-131.
The secondary side of the transformer has two 115 VAC windings and one 20 VAC winding. The two
115 VAC windings are connected in series to produce 230 VAC, so the following voltages are available
on the plug from the AC Transformer:
• 230 VAC
• 115 VAC
• 20 VAC
Figure 5-83 115VAC/230VAC Input Voltage Selection
PLUG IN
115 VAC POSITION
115 VAC MAINS
PLUG IN
230 VAC POSITION
230 VAC MAINS
TRAFO
TRAFO