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4. Installation
DANGER
The UPS installation operations must be carried out exclusively by a SKILLED TECHNICIAN (paragraph 2.2.1).
4.1
Safety regulations
CAUTION
Before carrying out any installation operation you must read and apply the following:
1. The UPS has a high leakage current. It is essential to make the earth connection before connecting the power supply.
It is necessary to make sure that the switchgear has a safe connection with the earth circuit and adequate protection
as required by the installation standards.
2. The UPS must only be installed in a fixed way with a thermal-magnetic circuit breaker placed upstream of it. Connection
of the unit to the mains by means of a traditional plug is not allowed.
3. A protection circuit against voltage backfeed made as in the diagrams shown in paragraph 4.2.6 must be provided
outside the UPS.
4. The switchgear or the disconnector must be installed near the equipment and must be easily accessible.
5. A warning label must be placed on all the mains disconnector switches installed away from the area of the UPS for the
purpose of reminding the assistance personnel of the fact that the circuit is connected to a UPS. The label must bear
the following text (or the equivalent):
4.2
Electrical connections
The electrical hook-up of the UPS to the switchgear is part of the installation that is not normally performed by the UPS
manufacturer; for this reason, the indications that follow are to be considered approximate and it is recommended that
the electrical connections are made on the basis of local installation standards.
After removing the UPS from the packaging and positioning it in its definitive place, the skilled technician can begin to
make the electrical connections.
CAUTION
The choice of cable type and their cross sections depending on the current they carry and their installations must be
made as indicated by the installation standards in force and it is a responsibility of the skilled technician.
The input current and the output power of the UPS are indicated in chapter 9 and the battery current in table 4 of chapter
10.
INDICATION
Chapter 10 shows the instructions for sizing cables, fuses and automatic and differential switches.
Archimod HE 240-480®
21
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