Salicru UPS SLC TWIN PRO series, User Manual

13

SALICRU

5.  Installation.

•  Check the Safety instructions (see chapter 2).
•  Check that the data in the nameplate are the required by the 

installation.

•  A wrong connection or manoeuvring, can make faults in the 

UPS and/or loads connected to itself. Read carefully the in-

structions of this manual and follow the stated steps in the 

established order.

• 

This UPS has to be installed by qualified staff and it 

can be used by personnel with no specific training, 

just with the help of this «Manual» only.

• 

All connections of the equipment including the control 

(interface, remote panel, ...), will be done with the 

switches at rest and no voltage present (UPS power supply 

switch to «Off»).

• 

Never forget that the UPS is an electrical energy gener-

ator, so the user has to take the needed cautions against 

direct and indirect contacts.

•  When there is only one equipment, omit all the instructions 

and their implicit connections as regards to parallel systems.

•  Parallel system installation needs a switchgear panel with 

input, output and static bypass single protections (the last 

one for TWIN/3 PRO models higher than 10 kVA only), and a 

manual bypass too.
This switchgear panel allows isolating only one equipment 

from the system, when facing any malfunctioning and sup-

plying the loads with the rest of equipments during the pre-

ventive maintenance or during the reparation of itself.
Under request a manual bypass panel can be supplied for a 

single equipment or a particular system.

• 

In parallel systems, the length and cross section of the 

cables that go from the switchgear panel till one of the 

UPSs and vice versa, will be the same for all of them without 

any exception.

• 

Battery circuit is not isolated from input voltage. Haz-

ardous voltages can be found out between the battery 

terminals and earth. Check that there is not input voltage be-

fore doing any intervention on them.

5.1.  To be considered in the 

installation.

•  All the equipments and battery sets have terminals as con-

nection parts for power and connectors for communications.

•  Terminals for separate bypass line are only available in TWIN/3 

PRO models higher than 10 kVA.

•  Cross cable section of the input and output lines, will be cal-

culated from the currents stated in the nameplate of each 

equipment, and respecting the Local and/or National Low 

Voltage Electrotechnical Regulations.
For the bypass current stated in the nameplate, has to be 

considered two groups of equipments:

ˆ

Equipments up to 10 kVA TWIN/3 PRO. Current on 

phase R is higher to the other two, because the input of 

the UPS is common with the bypass line. 

ˆ

Equipments > 10 kVA TWIN/3 PRO. These equipments 
have separate terminals for UPS input and bypass line.

•  Protections of the switchgear panel, will have the following 

features:

ˆ

For input and bypass lines, type B for RCD devices and 

C characteristic for circuit breakers.

ˆ

For the output (load feeding), C characteristic for circuit 

breaker.

Regarding the size, they will be as minimum to the currents 

stated in the nameplate of each UPS. Pay attention to the 

UPSs up to 10 kVA and three phase input, because a four 

pole switch has to be fitted in as input protection and a 

second one of two poles between this one and the own UPS, 

in order to protect the phase R and neutral.

•  In the nameplate of the equipment there are only printed the 

nominal currents as it is stated in the safety standard EN-IEC 

62040-1. To calculate the input current, the power factor and 

the efficiency of the equipment have been considered.
Overload conditions are considered as nonpermanent and 

exceptional operating mode.

•   If it is added peripherals to the input, output or bypass like trans-

formers or autotransformers to the UPS, the currents stated in 

the own nameplates of those elements has to be considered 

in order to use the suitable cross sections, by respecting the 

Local and/or National Low Voltage Regulation 

• 

When an equipment incorporates a galvanic isolation 

transformer, as standard, as an option or either in-

stalled by yourself, either at the UPS input, bypass line, 

output or at all of them, protections against indirect contact 

has to be fitted in (residual current device) at the output of 

each transformer, because due to its specification of isolation 

it will prevent the triggering of the protections fitted in the pri-

mary of the transformer in case of electrical shock in the sec-

ondary (output of the isolation transformer) 

•   Remind you that all external isolation transformers already 

installed or supplied from factory, has the neutral of the sec-

ondary connected to earth by means of a cable bridge be-

tween both terminals. If it were required an isolated output 

neutral, remove this cable bridge, keeping the precautions 

stated in the respective local and/or national low voltage reg-

ulations.

•  All standard UPSs have batteries in the same enclosure of 

the equipment , less those ones as B0 and B1. In the first 

ones, the battery protection is by internal fuses and there is 

no access to the end-user.
Accumulator cabinet or modules have battery protection 

too, and in this case, they are duplicated. An internal ones 

through fuses with no access for the end-user and an addi-

tional ones by means of a two pole circuit breaker.

• 

IMPORTANT FOR SAFETY: In case of installing the 

batteries by yourself, the accumulators have to be pro-

vided with a two pole circuit breaker protection sized to the 
features stated in table 2.

5.2.  Reception of the equipment.

5.2.1.  Unpacking, content checking and 

inspection.

•   To unpacking, see section 5.2.3.
•  On receiving the device, make sure that it has not suffered 

any damage in transport (impact, drop, ...) and its features 

correspond with the ones in the order, so it is recommended 

to unpack the UPS and make a first visual inspection.