2-30
H
Conformance to Low-voltage Directives
An input fuse is not provided with the SYSDRIVE Inverter. Make sure to connect the fuses between the
AC main circuit power supply and Inverter input terminals L1, L2 and L3 to protect the input diode or
cables. (A fuse is provided in the DC main circuit power supply to protect the output side.)
•
Input Diode Protection:
A semiconductor protection fuse is recommended for protecting the input diode when a short-circuit
occurs in the Inverter. The following table shows the recommended fuse specifications. Another fuse
can be applied if I
2
t is smaller than that in the table and rated current is larger than Inverter input current
shown in the table.
•
Cable Protection:
A general fuse can be applied for cable protection. Observe the local safety regulations for selection.
Select the fuse whose rated current is larger than the Inverter input current shown in the following
table.
Fuse
Shield
Noise filter
Note Be sure to install an open chassis type Inverter inside a panel.
Installation
Chapter 2
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