Use; Connections - Riello 5KVA Installation And Use Manual

U
SE
C
ONNECTIONS
INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSONNEL.
THE FIRST CONNECTION TO BE MADE IS THAT OF THE PROTECTION CONDUCTOR (EARTH CABLE), TO
THE UPS MUST NEVER BE MADE OPERATE WITHOUT A CONNECTION TO THE EARTHING SYSTEM.
Warning: providing it complies with the neutral (N) and phase (F) indications for plugs and sockets, the
UPS, when inserted in an installation, does not alter the existing neutral arrangements. The resistance on the
neutral connection must be less than 0.1 ohm.
A differential switch upstream will also be triggered for a fault occurring downstream of the UPS. In
calculating reactivity of this switch, account must be taken of the leakage current of the UPS (approx. 2 mA)
plus that of the load which come together on the UPS's earth conductor.
The neutral arrangements are altered only if there is also an isolating transformer or when the UPS operates
with a neutral that is disconnected upstream.
In any case avoid connecting the output neutral with the input neutral or to the earth as this could
damage the UPS.
To make the mains power and load connections, follow the instructions below:
1. Install a 63A magneto-thermal switch with intervention curve B or C upstream of the machine (4 poles
for three-phase versions, 2 poles for single-phase versions).
2. The terminals to be used for connection of the input and output
connections are located on the inside of the back-pack. Next unscrew
the back-pack fastening screws (two each side) on the sides of and
above the back-pack (see figure to the side).
3. Lift the back-pack off (see figure to
the side). WARNING: the back-
pack is connected to the back of the
UPS by way of an earth cable which
prevents it from being taken away
completely. Do not try to separate
the back-pack from the UPS.
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THE TERMINAL MARKED .