Danfoss iC7 Series Installation Manual page 8

Installation Guide | iC7 Series Air-cooled LCL Filter OF7Z3
Unless local wiring regulations state otherwise, the cross-sectional area of the protective grounding conductor must be at least ½ times
of the phase conductor and made of the same material when the phase conductor cross-section is above 35 mm² according to IEC
60364-5-54; 543.1.
The connection must be fixed.
AC Fuses
3.4
The front-end modules in the drive system must be equipped with fast-acting AC fuses to limit the damage of the drive system. Install AC
fuses at the input terminals of the LCL Filter.
The AC fuses are not included in the LCL Filter delivery. For the recommended fuse types and required fuse sizes, see the iC7 Series Air-
cooled System Modules Installation Guide.
Installing the Cables
3.5
1.
Connect the input cables of the LC Filter to the output terminals of the L Filter.
Use M12 bolts and tightening torque 70 Nm (620 in-lb).
2. Connect the mains cables to the mains terminals of the L Filter with internal cables or busbars.
The terminals are not designed for installing the mains cabling directly. Install additional terminals for the recommended
mains AC cabling. Use internal cabling or busbars between AC terminals of the LCL Filter and the actual mains terminals.
Define the size of the internal cables or busbars according to the nominal current and according to local regulations.
Use M12 bolts and tightening torque 70 Nm (620 in-lb).
3. Connect the output terminals of the LC Filter to the input terminals of the power unit.
Use M12 bolts and tightening torque 70 Nm (620 in-lb).
4.
Connect the grounding cable to the PE terminal.
Use M8 screws and tightening torque 20 Nm (177 in-lb).
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Electrical Installation
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