Specifications

6
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