Ups general description & installation
Rev.D JSE410920 22/07/08 JUD408311
15 of 31
3.4 ELECTRICAL CONNECTION
The electrical connection is part of the work which is normally provided by the
supplier that carries out the electrical installation and not by the UPS manufacturer. For
this reason, the following recommendations are only an indication, as the UPS
manufacturer is not responsible for the electrical installation.
In any case we recommend to carry-out the installation and the electrical connections
of the input and output in compliance with the local standards.
During the electrical installation take particular care to check the phase rotation with
a suitable instrument.
- UPS up to 20 kVA
The terminal boards are placed on the rear of the UPS, under the breakers. To
access the terminals remove the protection, removing the fixing bolts.
- UPS 30-40 kVA
The terminal boards are placed on the front of the UPS. To access the terminals
remove the front panel, removing the fixing bolts.
WARNING
The connection to the mains must be carried out with protection fuses between the
mains and the UPS.
The use of residual current devices in the line supplying the UPS is
unadvisable. The leakage current due to the RFI filters is rather high and it can
cause spurious tripping of the protection device.
According to the EN62040-1 standard, in order to take into account the UPS’ leakage
current, residual current devices having adjustable threshold can be used.
INCLUDE AN APPROPRIATE AND READLY ACCESSIBLE DISCONNECT DEVICE
IN THE FIXING WIRE CONNECTING THE UPS TO THE MAINS
To protect the output against electrical shock, use the following residual current
devices:
B8033: DEVICE AS TYPE B (IEC/TR 60755/A2)
B8031: DEVICE AS TYPE A (IEC 61081-1 or IEC 61091-1)
The connection cables section is shown in the following tables.
B8031 UPS (kVA) 10 15 20
Rectifier 3x25 3x32 3x32
Input fuses (A)
Bypass 1x80 1x110 1x150
Rectifier 3x6 3x10 3x10
Input cables (mm
2
)
Bypass 2x16 2x25 2x35
Output cables (mm
2
)
2x16 2x25 2x35
Battery cables (mm
2
)
3x6 3x6 3x6
To Next Page
Loading...
Need help?
General