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4200FA XT 80kVA Installation and Operation Manual
29
5.3
Specifications – Efficiency and Thermal Loss at Different Loads*
Percent of Rated
Load*
Efficiency
Transformerless
W/ Internal
Transformer
100% Load
88%
86.4%
*Contact the factory for additional information on efficiency vs. load curves.
Percent of Rated Load
Thermal Loss (BTU/Hr)
Transformerless
W/ Internal
Transformer
100% Load
29,778
34,374
75% Load
23,184
26,662
50% Load
16,750
19,117
25% Load
11,984
13,225
No- Load
5,398
8,319
* The thermal loss are listed for no-load, 25/50/75/100% loads under two sets of conditions:
•
UPS without internal transformer
•
UPS with Internal transformer
(NOTE: The thermal values listed are representative only. Individual performance may be
different due to variations in manufacture, transformer type, and transformer performance at
various loads.)
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