Salicru SLC Link Series Service Manual Download

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If the Backfeed protection is not automatic, warning labels must be placed in all the primary power switches or circuit-breakers,
installed in far areas from the equipment, to warn the electric maintenance staff of the presence of a

UPS

in the circuit.

The label will have the following text or an equivalent one:

Isolate the Uninterruptible Power Supply (UPS) before working in the circuit.

• Connect the power supply cables to the input terminals

(C1), respecting the phase (L) or phases (R-S-T) sequence and

neutral (N)

, stated in the equipment labelling and in this manual.

It is a must to have neutral in equipments with three phase input.

7.4.- Connection of input transformers or autotransformers, external to the UPS in a separate case.

• When an input transformer or autotransformer is needed by the

UPS

, it will be placed as close as possible, in such way that

the both parts after being interconnected will be considered as a single unit.

•

The earth connection must be necessarily made to the terminal identified with the label

( )

, ensuring that this is done

before connecting the input power supply cables.

• Connect the power supply cables to the input terminals of the transformer or autotransformer,

respecting the phase (L) or

phases (R-S-T) sequence and neutral (N)

, stated in the equipment labelling.

• Interconnect through cables the output terminals of the transformer or autotransformer with the

UPS, respecting the

phase (L) or phases (R-S-T) sequence and neutral (N)

, stated in the equipment labelling.

7.5.- Connection of the output, terminals (C4).

•

The earth connection must necessarily be made to the terminal identified with the label

( )

, ensuring that this is done

before connecting the input power supply cables of the

UPS

• If the

UPS

has an output isolation transformer, there will be 5 terminals

(C4)

, where 4 correspond to the ends of the 2

transformer secondary windings and the fifth to the earth terminal. Thanks to these terminals, the connection of the windings
can done in series or parallel in order to adapt output voltage of the equipment to the required one, so one or two cables can
be observed as bridges at the output terminals

(C4)

Connection in series (for output voltage 208/220/230/240V), bridge between terminals

and

Connection in parallel (for output voltage 100/110/115/120/127V), bridges between terminals

and

, and

and

Do not remove the bridge/s and do not modify the received bridges connection of the equipment, since the specifica-

tions stated in the nameplate would not correspond with those given by the unit and it would be a risk for the loads and

UPS

Keep in mind that the equipments with output isolation transformer are supplying a floating output voltage, so in case you
need to reference it, a bridge between the output terminal

and earth terminal

( )

must be done.

All the terminals labelled as earth

( )

are connected to each other, to the ground of the equipment and to the shield screen

of the isolation transformer if the

UPS

has it.