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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)
Manual 2100-674A
Page
18 of 41
FIGURE 15
Adjusting the 230/208 VAC Transformer
60
230VAC
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
...do not adjust transformer
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