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What is the primary difference between double conversion and delta conversion UPS systems?

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.

APC DU0-001 Summary

  • Vendor: APC
  • Product: DU0-001
  • Update on: Jan 5, 2026
  • Questions: 324
Price: $52.5  $149.99
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