Functional Description; Igbt Rectifier; Igbt Dc-Dc Converter - Toshiba T90S3S08KS6XSN Manual

Guide Specification – 3-Phase Static Uninterruptible Power Supply
Rated Load Power Factor
Overload Capacity
Harmonic Voltage Distortion
Phase Displacement
Voltage Transients:
Crest Factor
5

FUNCTIONAL DESCRIPTION

The UPS shall protect the load against surges, sags, undervoltage, and voltage fluctuation. The
UPS shall have built-in protection against permanent damage to itself and the connected load for
all predictable types of malfunctions. The load shall be automatically transferred to the bypass
line without interruption in the event of an internal UPS malfunction. The status of protective
devices shall be indicated on a LCD graphic display screen on the front of the UPS.

5.1 IGBT Rectifier

5.1.1 General
A solid-state, multi-level IGBT Rectifier shall convert the incoming AC power into DC
power to supply the inverter input and system battery.
5.1.2 Voltage Regulation
The rectifier output voltage shall not deviate by more than +/- 1.0% RMS under the
following conditions:
5.1.3 Reflected Harmonic Content
Input current THD shall be

5.2 IGBT DC-DC Converter

5.2.1 General
A solid-state IGBT Battery Converter/Charger shall control battery charging.
5.2.2 Battery Charge Current Limit
March 2009
100% Load Step Change
Loss or Return of Input
Transfer from Bypass to Inverter : +/-5% Maximum
(At Bypass Rated Voltage)
Recovery Time
0% - 100% loading (balanced and unbalanced non-transient loading)
+15% – 20% utility voltage change
+/-10.0% utility frequency change
3% maximum at 60%-100% load
6% maximum at 25%-59% load.
: 0.9 PF lagging
: 125% for 2 min.,
150% for 1 min.
: 2% maximum THD (100% Linear Load)
: 5% maximum THD (100% Non-linear Load)
: 1° Maximum at 100% load
: +/-2% Maximum (Without battery assistance)
: +/-1% Maximum
: 20 ms
: 2.3
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