Rectifier

Input Connections 

3 phase, 4 wire, earth

Input Voltage 

Nominal 400V AC + 20% 

Input Frequency

Auto adjust, 45 - 65 Hz 

Power Factor

0.8

Soft start

Yes, with zero inrush current

High/ Low DC option

Available

Programmable

Rectifier gain, Rectifier current gain, Output voltage, Input current limit, Charge current

Output ripple

< 1% 

Inverter

Inverter

Nominal 400V DC; Programmable between 300 to 600 V 

Inversion method 

PWM, IGBT based, High frequency, Full H-bridge per phase 

Unbalanced load

100%

Isolation

Via output transformer

Efficiency

96% on full load conditions

Output destortion

Linear load : < 2%; Non-linear load : <5%

Requlation

Programmable per phase

Absolute accuracy

32 points per sinewave

Sine processing

3 : 1

Crest factor

<3 volt after 10 ms.

100% load step response

Temperature dependant up to 150%

Temperature supervision

Bypass, Flat topping output reduction

Frequency stability

4 points, with programmable warning & shutdown

Frequency tracking

< 0.01%

Output frequency

Programmable, + 10 Hz

Max. output current

Programmable RMS and peak current

IGBT supervision

Yes

Hardware supervision

Yes

Field up-gradable to parrallel

Yes

Parallel Redundancy:

Number of UPSs 

Up to 8

Power rating

Any capacity, can be mixed

Master appointment

Automatic, any UPSs

Maximum current

Programmable

Front panel indications

Master, Slave, Share fault, Group fault

Shared current

Computed indicated

Phase difference between UPSs

< 50 micro secs.

Parallel frequency range

50 Hz