Toshiba G9000 manual General Conditions for Installation

Guide Specification – 3-Phase Static Uninterruptible Power Supply

2.3System Operation:

The UPS shall operate as a fully automatic on-line system in the following modes:

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 re-transfer the critical load from the bypass to the inverter output without interruption of power to the critical load.

2.3.5Maintenance Bypass

An optional manual make-before-break maintenance bypass panel may be provided to electrically isolate the UPS for maintenance or test without affecting load operation.

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 like-capacity units.

3.2UPS Environment:

3.2.1 Standard Environmental Parameters
Operating Temperature	: 32° to 104°F (0° to 40°C)
Operating Humidity	: 5 - 90% (Non-condensing)
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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