Guide Specification –
2.3System Operation:
The UPS shall operate as a fully automatic
2.3.1Normal
IGBT Rectifier converts AC input power to DC power for the inverter and for charging the batteries. The IGBT inverter supplies clean and stable AC power continuously to the critical load. The UPS Inverter output shall be synchronized with the bypass AC source when the bypass source is within the AC input voltage and frequency specifications.
2.3.2Loss of Main Power
When Main Power is lost, the battery option shall automatically back up the inverter so there is no interruption of AC power to the critical load.
2.3.3Return of Main Power
The system shall recover to the operating mode in Item 1 and shall cause no disturbance to the critical load while simultaneously recharging the backup battery.
2.3.4Transfer to Bypass AC source
If the UPS becomes overloaded, or an internal fault is detected, the UPS controls shall automatically transfer the critical load from the inverter output to the bypass AC source without interruption. When the overload or internal warning condition is removed, after a preset “hold” period the UPS will automatically
2.3.5Maintenance Bypass
An optional manual
3GENERAL CONDITIONS FOR INSTALLATION
3.1Required Output Capacity:
The UPS will be available in the following output capacities: 80, 100, 160, and 225 kVA (72, 90, 144, and 202.5 kW). Each unit shall be capable of being operated either independently or connected in parallel for a total of up to four
3.2UPS Environment:
3.2.1 Standard Environmental Parameters |
|
Operating Temperature | : 32° to 104°F (0° to 40°C) |
Operating Humidity | : 5 - 90% |
Altitude | : 7380 ft. (2250 m) (without derating) |
3.2.2 Discharge Heat from UPS at full load. |
|
80 kVA | : 11,307 Btu/Hr |
100 kVA | : 14,133 Btu/Hr |
160 kVA | : 19,408 Btu/Hr |
225 kVA | : 27,292 Btu/Hr |
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