Figure 1.9 Wiring: Vac And Vdc Supply Wiring Landing Points; Figure 1.10 Adjusting The 230/208Vac Transformer - Bard D25A2PA Installation And Service Instructions Manual

Factory
Wiring
VAC
NOTE: Right-hand access model wiring landing points
are shown here; left-hand access models will
mirror this image.
230/208V 1 phase and 3 phase equipment use dual primary voltage transformers. All equipment leaves the factory wired on
240V tap. It is very important that the correct voltage tap is used. For 208V operation, reconnect from 240V to 208V tap.
The acceptable operating voltage range for the 240 and 208V taps are: 240V Tap (253 – 216) and 208 Tap (220 – 197).
1. Verify incoming AC voltage: Multimeter set to VAC
Shelter supply breaker in ON position
Bard system breaker in OFF position
230V/208V Single Phase Voltage Range:
197VAC – 253VAC
230V/208V Three Phase Voltage Range:
197VAC – 253VAC
(not shown)
FIGURE 1.9
VAC and VDC Supply Wiring Landing Points
Field
.
Wiring
Factory
Wiring
NOTE: Right-hand access model wiring landing points
FIGURE 1.10
Adjusting the 230/208 VAC Transformer
.
230VAC
+
VDC
are shown here; left-hand access models will
mirror this image.
2. If incoming AC voltage is 220VAC or above...
3. If incoming AC voltage is below 220VAC...
...shut off AC breaker to unit
and move factory "240V" wire to "208V" terminal
.
-
Field Wiring
+
...do not adjust transformer
Manual 2100-643C
Page 17 of 59