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DOE-SPEC-3021-97
document, however, supersedes applicable laws and regulations unless a specified exemption
has been obtained.
3.1.1
General. The UPS system will supply power to an ac bus that supplies loads,
such as computers, controls, fire protection, alarms, communication equipment,
and recorders, that cannot tolerate even a momentary loss of ac power. The
UPS system shall have the following characteristics:
UPS Inverter Continuous Output Rating @
1.0 to 0.8 power factor (pf) lagging at
kVA
site maximum ambient and site elevation
Output AC Voltage
Output Phase/Wire
/
Ground
[S-Solid] [U-Ungrd'd]
Hz
Output Frequency
Bypass Transformer Reqd.
[Yes] [No]
Constant Voltage Regulating
Bypass Transformer Reqd.
[Yes] [No]
UPS Module Efficiency:
LOAD
MINIMUM
(% of
EFFICIENCY
normal)
25
75
50
85
100
90
ATTENTION:
Enter the number of years of required design life below.
********************
Design life. The design life shall be [
] years.
ATTENTION:
Enter the required mean time between failures (MTBF) below.
********************
3.1.3
Mean time between failures (MTBF). The design MTBF shall be [
] hours
5


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