UPS 7400

PWM Based IGBT Inverter

The rectifier provides up to 0.99 Input Power Factor (PF), up to 3% of Input Current Total Harmonic Distortion (THDi) with

Optional configurations of Harmonic filters and the widest input voltage window

and frequency tolerances.

Advanced inverter control technology provides the highest output power quality,

ensuring very low output voltage THD and superior waveform to protect connected

loads.

It operates under a wide variety of conditions, handling 100% non-linear loads with

3:1 crest factor, as well as 100% unbalanced loading.

The inverter control enables 7400M to be suitable for the widest ranges of loads

required by the market; delivering full active power rated kW up to 0.9 leading PF loads.

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Input Isolation Transformer

- Compatible with Liebert AF, the Active Harmonic Filter

- Wide range of solutions specially designed for handling

current harmonic on bypass at different stages

- Available for rectifier and / or bypass supply

Protection Degree (IP) For 7400M Enclosure

- To address stressed environmental conditions, UPS with

higher than IP20 degree of protection can be made

available for most of the kVA ratings of 7400M

DC Ground Fault Indication

- This provides indication of occurrence of battery ground

fault problems

i-Enersave Module

- Purpose of this logic is to optimally load each UPS system

in a multi UPS parallel system so that each UPS works in its

most efficient band of operation while total installation

being subjected partial load. This logic keeps minimum number

of UPS system in Operation as per load demand.

The choice of redundancy level is settable in the logic

to have high up-time depending on criticality index of

load, it has wide use in industries where load pattern is

Highly dynamic.

- Auto Sleep and Auto sequencing options available with this logic

Ensures no UPS System is spared from regular health check up, if

Prolonged conditions persist. Thus enhanced efficiency of overall

System reduces Energy cost and increased customer profitability.

This tacitly reduce consumption of natural resources,

Combustion of fossil fuel, hence reduction in green house gas

Emission and carbon footprint.

Power Walk-in for 1+N System

- The module power walk-in is standard. This option can be

For the module restart delay after the mains return. This is

Very useful for applications with motor generator at the

Input

LBS

- This ensures the synchronization of outputs of two

Independent UPS systems to form Dual Bus Architecture

For High availability of Critical Bus

Liebert LTS, Static Transfer Switch

- This allows critical load to be transferred between two

independent, synchronized AC power sources without any

risk of load disturbances

- This allows automatic transfer of load between the two

sources

TVSS

- This is a Transient Voltage Surge Suppressor

- This offers protection from damaging transients and

electrical line noises

- This is normally connected at the I/P and O/P path of

7400M as an optional item