Legrand TRIMOD HE 15 kVA [5/14] X n p p

5 di 14

2.4 Scalabilty

The modularity of the UPS must allow to increase the back-up time on site, simply adding battery

drawers. The upgrade will not require factory modifications and will not need dedicated special tools.

2.5 Architetture

The architecture of the UPS must be parallel distributed, to be more precise, the load will be shared

between all power modules in each phase. In this way, during normal run, no power module is inactive or

in standby. In a redundant configuration, if one moduel fails all the others ones will take the relevant load

without any interruptions or transfer time at the output of the UPS. In case one module failure the power

is guaranteed by the others modules and the supplied power will been s follows:

nomout

)( −

in single phase configuration

and

nomout

)3( −

in three phase configuration

where

•

nom

is the nominal power of the UPS;

• is the power supplied by the UPS with one module out of order;

•

is the number of installed power modules inside the UPS;

• x is the number of power modules out of order;

2.6 Adaptability

The UPS should be equipped with a distribution system, for cable connections, which allows the desired

In/Out phase configuration by simple jumper connections, without any components replacement or

factory settings.

Thanks to this system, it will be possible to set, independently, In/Out phase configurations as

three/three, three/single, single/single and single/three. Furthermore it will be possible to set the output

as three independent single-phase lines, and due to adequate dimensioning, to realize individual

redundancy for each single line.

The In/Out phase configuration will be always possible on site accordingly with the application in terms of

utility and loads.

out