Power line connection
6.
Ref.1912
· 227 ·
DDS
HARDWARE
6.2 Protection fuses
To protect the FAGOR DDS system, fuses must be included on the lines
coming from mains. Figure
of this chapter shows its location.
The lines going to the auxiliary power supply, integrated in all FAGOR
power supplies, except the PS-65A that needs an external auxiliary power
supply called APS-24, and even those that go to the ACD/SCD/CMC
compact drives do not need external protection fuses because they are
already integrated in all of them. Therefore:
Technical data
Extremely fast fuses must be installed in the mains lines to protect the
semiconductors sized according to the type of power supply.
Depending on the power supply being installed, they will be selected
according to the characteristics indicated in table
which are the ones
to be met by the fuses that must necessarily be installed in the line input of
the DDS system to protect it properly.
When using compact drives, the fuses must be selected according to the
following table:
Recommended fuses
Table
and table
offer a variety of fuses from different
manufacturers and may be used as a reference. These references of the
fuses shown in these tables are valid for installations where the system is
connected directly to mains and for the rated power of the units. For lower-
than-rated power, we recommend to select the fuses according to the
characteristics of each system.
INFORMATION.
Note that FAGOR does not supply the fuses; in other
words, the FAGOR DDS system does not include the fuses as accessories.
i
MANDATORY.
DO NOT install external protection fuses in lines that feed
the auxiliary power supply or that of a compact drive.
T. H6/1
Technical data of the fuses to be installed with the FAGOR DDS
system depending on the power supplied installed.
PS-25B4
PS-65A
XPS-25
XPS-65
In
40 A
> 100 A
40 A
> 100 A
Isurge (1 s)
> 115 A
> 325 A
> 115 A
> 325 A
Clearing I²t (A²s)
< 500
< 15 000
< 500
< 15 000
INFORMATION.
Actually, IGBT components cannot be protected with fuses.
Therefore, when using RPS power supplies, the protection does not prevent
the module from breaking down. Using them minimizes the number of
components that may be damaged as a result of a possible malfunction.
i
T. H6/2
Fuses to be installed in a DDS system with compact drives. Technical
data
ACD | SCD | CMC
SCD
1.08
1.15
1.25
2.35/2.50
2.75
In
> 5.6 A
> 10.6 A > 17.7 A
> 28 A
> 41 A
Isurge (0.5 s)
> 8 A
> 15 A
> 25 A
> 35 A
> 53 A
Clearing I²t (A²s)
< 120
< 338
< 900
< 900
< 1350
Содержание DDS APS-24
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