Salicru SLC TWIN PRO Series, User Manual

17

SALICRU

ˆ

Before downloading the equipment from the pallet, the 

stabilizer supports have to be removed (see figure 8), oth-

erwise they will make difficult the process and they will 

be bent when impacting with the wooden ramp, making 

damages and the own case or cabinet structure of the 

equipment.

ˆ

Put the ramp as figure 7 and download the equipment 

from the pallet.

4.2.4.  Transport to location.

• 

All equipments have four casters (two of them with brake), 

so it is easy to move it till the installation location once it is 

unpacked.
Nevertheless, if the reception area is far from the installation 

place, it is recommended to move the UPS with a forklift or a 

suitable transport medium keeping in mind the distance be-

tween both points.
If the distance is too long, it is better to move the equipment 
packed till the installation place and unpack it there.

Fig. 9. 

• 

If it is appropriated and as a preventive measure, the stabi-

lizing supports can be reassembled (see Figure 8), to avoid 

the dump of the device. Optionally the equipment can be 

locked, by fixing it to the floor through the holes provided in 

the same support (see figure 9).

4.3.  Connection.

• 

Cross cable section used in the power supply of the 

equipment and loads to feed, will be sized according 

to the nominal current stated in the nameplate sticked on the 

equipment, by respecting the Low Voltage Electrotechnical 

Regulations or norms of the corresponding country.

• 

Installation will have the suitable input protections sized to 

the current of the equipment and stated in the nameplate of 

the equipment (residual current devices type B and circuit 

breaker with C characteristic or any other equivalent one).
For equipment with three phase input, which are connected 

to a power distribution system type IT, the protection will be 

four poles in order to break the three phases and neutral in the 

same manoeuvring.
Overload conditions are considered as a nonpermanent an 

exceptional operating mode, so these currents will not be 

kept in mind when sizing the protections.

• 

Output protection will be done with a circuit breaker of C char-

acteristic or any other equivalent one.

• 

To make the power, control connections or insert the option 

cards, etc..., it is needed to remove the screws that fix each 

cover and the own covers. 
When finalising the corresponding tasks the cover/s and their 

fixing screws will be fitted back.

• 

It is recommended to use pointed terminals in all ends of the 

cables connected to the power blocks (input, output and by-

pass).

• 

Check the correct torque in the screws of the power blocks.

• 

In installations with only one UPS, the "Jumper" (cable 

as bridge mode) connected from factory between the 

terminals 

JP1

 and 

JP2

 has to be kept as it is.

For equipments connected in a parallel system, this "Jumper" 

has to be removed.
Act according to the installation or otherwise the UPS or par-
allel system will not work.

4.3.1.  Connection of input power block.

• 

As this is a device with class I protection against elec-

tric shocks, it is essential to install a protective earth 

conductor (connect earth(

)

). Connect the conductor to 

the terminal, before connecting the power supply to the input 

power block.

• 

In accordance with safety standard EN-IEC 62040-1, the in-

stallation has to be provided with a «Backfeed protection» 

system, as for example a contactor, which will prevent the 

appearance of voltage or dangerous energy at the input 
mains during a mains fault (see figure 10 and respect the 
circuit diagram of the particular «Backfeed protection» for 
the equipment with single phase input (

TWIN PRO

) or three 

phase input (

TWIN/3 PRO

 up to 10 kVA)).

There can be no derivation in the line that goes from 

the «Backfeed protection» to the UPS, as the safety 

standard would be infringed.

• 

Warning labels should be placed on all primary power 

switches installed in places away from the device to alert the 

electrical maintenance personnel of the presence of a UPS 

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

Before working on this circuit.

• 

Isolate Uninterruptible Power System (UPS).

• 

Then check for Hazardous Voltage between all 

terminals including the protective earth.

Risk of Voltage Backfeed from UPS.

• 

Connect the input cables to the respective power block de-

pending on the configuration of the equipment (see figure 11).

Connection in a single phase input (TWIN)

:

Connect the power supply cables to input power blocks 

R (L)

and 

N

, 

by respecting the rotation of phase and neutral

stated in the labelling of the equipment and in this manual. 

If this rotation is not respected there could be fault/s and/or 

anomalies.
When discrepancies exist between the labelling and the in-

structions of this manual, the labelling will always prevail.

Connection in a three phase input (TWIN/3 PRO)

:

The described connection instructions are valid for all 

TWIN/3 PRO

 equipments, being the only difference the 

connection of the «Backfeed protection», which depending 

on the power it will be connected in the three phase 

input (

TWIN/3 PRO

 up to 10 kVA) or in the bypass line 

(

TWIN/3 PRO

 > 10 kVA).