Liebert 100-1000A Manuel D’Utilisation

This section provides the specifications for the Liebert STS2.

The Liebert STS2 can be set in several different configurations, according to the model and location. 

The configuration is set at the factory and does not need to be changed by the customer. These 

configurations apply to both units, the Color Graphical Display and an LED Display.

The Liebert STS2 accepts input frequencies of 50 Hz and 60 Hz. The frequency shall be within 

± 0.5Hz of the nominal frequency.

The Liebert STS2 models are available to handle various voltages. 
The input voltage must be three-phase AC (3 or 4 wire-plus-ground). The Liebert STS2 is designed to 

accept an input neutral from each source. The neutral is switched in the 4-pole Liebert STS2 only.
The voltage shall be within ± 10% of the nominal voltage.
The output voltage shall be three-phase AC (3 or 4 wire-plus-ground). Nominal output voltage shall 

be same as input voltage.
The following table provides nominal voltages, listed according to frequency.

These ratings are based upon continuous switch current rating. These ratings are for all voltages and 

frequencies. All units are 100% continuous current rated.

[L-L/L-N]

[L-L/L-N]

200/115V

200/115V

208/120V

208/120V

220/127V

220/127V

240/139V

240/139V

380/220V

380/220V

400/230V

400/230V

415/240V

415/240V

480/277V
600/346V

100
250
400
600
800

1000