Toshiba 2.0kVA Industrial Rackmount, a self-extinguishing function and a high switching speed

Black Gold Single Phase Uninterruptible Power Supply Systems Guide Specifications

2.0kVA Industrial Rackmount

waveform modulated by the PWM control using the 16 KHz switching frequency sinewave. The PWM-Modulated voltage waveform is transformed into a sine voltage waveform by the inductive component of the inverter transformer and by the capacitive component of the capacitor filter. The chopper, inverter, and charger use the IGBT with

a self-extinguishing function and a high switching speed.

4.2Modes of Operation

4.2.1Emergency (Battery Backup)

In the event the AC power from the utility system fails, the DC power is supplied from the batteries to the chopper and to the inverter to provide a continued and stable AC power supply to the load without interruption.

4.2.2Normal (Inverter)

The rectifier converts AC to DC to power the inverter, which supplies power to the critical load and simultaneously float charging the batteries.

4.2.3Battery Charge

The charger will float charge the batteries while no load is being powered by normal mode.

4.2.4Static Bypass

The load is being powered by an alternate source by being transferred from normal mode to bypass mode by the bypass switch. This mode is used during overload and maintenance repair. Power is conditioned by M.O.V.'s and a line filter during bypass operation.

5.0UPS Input

5.1System Rating The UPS's are sized to supply a load with a power factor of 0.70.

5.2Electrical Requirements

Voltage:	120 VAC Single Phase +10%/-30%
Frequency:	50 or 60 Hz	+/- 5 Hz
Input Harmonic Distortion:		less than 10% THD (current)

Input capacity: 1.0 times output capacity

Input power: approximately 1.0 power factor (unity)

5.2.2Battery Bus

Volts: 2.0 KVA 72 VDC nominal

Backup time: 6 mins @ full load/18 mins @ half load

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