APC
DU0-001 · Question #11
DU0-001 Question #11: Real Exam Question with Answer & Explanation
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Question
What is the primary difference between double conversion and delta conversion UPS systems?
Options
- ADouble conversion UPSs require a 1.3X generator oversizing. Delta conversion UPSs require a 3X generator oversizing.
- BDouble conversion UPSs are practical in size ranges from 0 - 20 kW. Delta conversion UPSs are practical in size ranges of 20 kW to 1 MW.
- CIn a double conversion UPS, 100% of the power is converted from AC to DC and then again from DC to AC. In a delta conversion UPS, only the difference between input and output power is converted.
- DIn a double conversion UPS, the transformer has a special ferro-resonant capability which provides limited voltage regulation and output waveform shaping. In a delta conversion UPS, a standard transformer is used.
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