Power line connection
POWER LINE CONNECTION
Protection fuses
6.
Ref.2003
· 203 ·
QC-PDS
HARDWARE
These references 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, the fuses should be selected according to the
characteristics of each system.
Any of the fuses in the previous table may be installed to obtain the
maximum power on each model. In cases where the power supply is
oversized, the fuse value should be adjusted to the actual requirements of
the machine.
INFORMATION. Be aware that IGBT components cannot be protected
with fuses. Therefore, when using a QC-RPS-
-
, the protection does
not prevent the unit from failure. Using them minimizes the number of
components that may be damaged as a result of a possible malfunction.
T. H6/3
Semi-conductor fuses according to UL 248 to be installed in the
mains line according to the QC-PDS model. Nominal voltage in AC,
UN
500 V AC. High cut-off power
100 kA.
QC-PS-025 QC-PS-045
Minimum
prospective
short circuit
current
5 000 A 5 000 A
MANUFACTURER
SIBA
20 089 04.50 20 089 20.80
20 412 04.50 20 412 20.80
50 138 06.40
20 282 20.80
20 412 20.50
QC-RPS-030 QC-RPS-160
Minimum
prospective
short circuit
current
5 000 A
MANUFACTURER
SIBA
20 089 20.80 20 610 32.315
20 412 20.80
20 282 20.80
WARNING. Using other protection devices instead of fuses (magneto-
thermal switches, for example ) does no guarantee proper protection of
the equipment.
MANDATORY. When using an auto-transformer or an isolating
transformer, the fuses must be selected according to its characteristics
depending on the structure of the installation. Therefore, the fuses must
be selected specifically for each installation since it will be affected by a
variable number of characteristics internal and external to the machine.
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