APC Data Center University Associate Certification DU0-001 Question # 32 Topic 4 Discussion
DU0-001 Exam Topic 4 Question 32 Discussion:
Question #: 32
Topic #: 4
What is the primary difference between double conversion and delta conversion UPS systems?
A.
Double conversion UPSs require a 1.3X generator oversizing. Delta conversion UPSs require a 3X generator oversizing.
B.
Double 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.
C.
In 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.
D.
In 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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