Salicru SLC CUBE4, User Manual

32

SALICRU

• 

In the documentation supplied with this user manual 

and/or on your pen drive, the information relating to 

the "Recommended installation" is provided. It shows the 

wiring diagrams, as well as the protection size and the min-

imum cross-sections of the cables connected to the unit, 

according to its nominal working voltage. All values are cal-

culated for total maximum cable length of 30 m between the 

distribution board, unit and loads.

ˆ

For longer lengths, correct the cross-sections to prevent 

voltage drops, observing the regulations or standards of 

the country.

ˆ

In the same documentation and for each configuration, 

the information for "N" parallel units is available, as well 

as the characteristics of the "Backfeed protection".

• 

There can be no bypass of the line that runs from 

the "Backfeed protection" to the UPS, as this would 

not comply with the safety standard.

•  Warning labels must be placed on all primary power 

switches, installed in areas away from the unit, to alert 

electrical maintenance staff to the presence of a UPS in 

the circuit.
The label will contain the following or an equivalent text:

Before working on the circuit

ˆ

Isolate the Uninterruptible Power Supply (UPS).

ˆ

Check the voltage between all terminals, including 

the protective earth terminal.

UPS return voltage risk.

•  Connect the input cables to the respective terminals ac-

cording to the configuration of the available unit.
For parallel systems, the connections that go from the 

panel to each unit must be repeated.
Connect the R-S-T-N power cables to the input terminals, ob-

serving the order of the phases and neutral indicated on the 

unit's labelling and in this manual. If the order of the phases is 

not observed, the unit will not work.
When there are discrepancies between the labelling and the 

instructions in this manual, the labelling will always prevail.

5.2.2.  Connection of the separate static bypass line. SLC 

CUBE4 B version (

Fig. 3, Fig. 4, Fig. 7 and Fig. 8) 

.

• 

As this unit has protection against class I electric shocks, 

it is essential to install a protective earth conductor 

(connect earth ( )). Connect this conductor to the earth ter-

minal before supplying voltage to the input terminals.

•  Following the EN-IEC 62040-1 safety standard, in units with 

a static bypass line, the installation must be equipped with 

an automatic "Backfeed protection" system, such as a discon-

nector, which prevents voltage or hazardous energy from ap-

pearing in the UPS input line during a network failure.
The standard is applicable regardless of whether the supply 

network is single-phase or three-phase and both for individual 

units and for each UPS of a parallel system.

• 

In the documentation supplied with this user manual 

and/or on your pen drive, there is information relating to 

the "Recommended installation" for each input and output con-

figuration. It shows the wiring diagrams, as well as the protec-

tion size and the minimum cross-sections of the cables 

connected to the unit, according to its nominal working voltage. 

All values are calculated for total maximum cable length of 30 m 

between the distribution board, unit and loads.

ˆ

For longer lengths, correct the cross-sections to prevent 

voltage drops, observing the regulations or standards of 

the country.

ˆ

In the same documentation and for each configuration, 

the information for "N" parallel units is available, as well 

as the characteristics of the "Backfeed protection".

• 

There can be no bypass of the line that runs from 

the "Backfeed protection" to the UPS, as this would 

not comply with the safety standard.

•  Warning labels must be placed on all primary power 

switches, installed in areas away from the unit, to alert 

electrical maintenance staff to the presence of a UPS in 

the circuit.
The label will contain the following or an equivalent text:

Before working on the circuit

ˆ

Isolate the Uninterruptible Power Supply (UPS).

ˆ

Check the voltage between all terminals, including 

the protective earth terminal.

UPS return voltage risk.

•  Connect the bypass input cables to the respective termi-

nals according to the configuration of the available unit.
For parallel systems, the connections that go from the 

panel to each unit must be repeated.
Connection to a three-phase bypass network:
Connect the R-S-T-N power cables to the bypass terminals, 

observing the order of the phases and neutral indicated on 

the unit's labelling and in this manual. If the order of the 

phases is not observed, the unit will not work.
When there are discrepancies between the labelling and 

the instructions in this manual, the labelling will always 

prevail.

5.2.3.  Connection of the output, output terminals (see

 Fig. 2 

to Fig. 8

).

• 

As this unit has protection against class I electric shocks, 

it is essential to install a protective earth conductor 

(connect earth ( )). Connect this conductor to the terminal 

(plate) before supplying voltage to the input terminals.

• 

In the documentation supplied with this user manual 

and/or on your pen drive, there is information re-

lating to the "Recommended installation" for each input and 

output configuration. It shows the wiring diagrams, as well 

as the protection size and the minimum cross-sections of the 

cables connected to the unit, according to its nominal 

working voltage. All values are calculated for total maximum 

cable length of 30 m between the distribution board, unit 

and loads.

ˆ

For longer lengths, correct the cross-sections to prevent 

voltage drops, observing the regulations or standards of 

the country.