Specifications

5
3.5.4 Storage temperature (non-operating): -20 to +70 degrees °C.
3.5.5 Relative humidity
a. Maximum operating range: 5% to 95% (non-condensing).
b. Recommended operating range: 30% to 90%.
3.5.6 Heat dissipation (at 100% load).
a. XX kBTU/hr
b. XX kW
3.5.7 Acoustical noise level:
XX dba @ 1 meter
3.5.8 The inverter shall have an output contactor to isolate the inverter from the load
and bypass source.
3.6 Reliability
The UPS equipment reliability shall be represented in terms of theoretical Mean-Time-
Between-Failures (MTBF). The UPS manufacturer shall, as a minimum, provide the
following capability:
3.6.1 Total single module UPS system output (includes reliability of bypass circuit):
3,000,000 MTBF hours.
3.6.2 Single module UPS operation (represents UPS module operation only):
140,000 MTBF hours.
3.7 Maintainability
MTTR of the UPS shall not exceed 1 hour including time to replace components.
3.8 System Battery
The system battery shall be sized to provide the specified back-up time to the inverter
when the UPS is supplying 100% rated load. The battery shall be of the VRLA, Flooded
Lead Acid or Nickel Cadmium types.