Danfoss iC7 Series Installation Manual page 9

Installation Guide | iC7 Series Liquid-cooled LC Filter OF7Z1
Grounding
4.4
Ground the filter in accordance with applicable standards and directives.
Unless local wiring regulations state otherwise, the cross-sectional area of the protective grounding conductor must be at least 50%
of the cross-sectional area of the phase conductor and made of the same material when the phase conductor cross-section is above
2
35 mm (AWG 2) according to IEC 60364-5-54; 543.1.
The connection must be fixed.
AC Fuses
4.5
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 LC Filter.
The AC fuses are not included in the LC Filter delivery. For the recommended fuse types and required fuse sizes, see the iC7 Series Liquid-
cooled System Modules Design Guide.
4.6 Installing the Cables
Procedure
1.
Connect the mains AC cables to terminals L1, L2, and L3.
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 LC 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 M10 screws and tightening torque 35–40 Nm (310–354 in-lb).
2.
Connect the AC cables from the AFE to terminals L1' , L2' , and L3' .
Use M10 screws and tightening torque 35–40 Nm (310–354 in-lb).
3. Connect the grounding cable to the PE terminal.
Use M8 screws and tightening torque 17–20 Nm (150–177 in-lb).
Terminals
4.7
LC10L
L1'
L1
L2'
L2
L3'
L3
PE
Figure 10: Terminals of the LC Filter
Danfoss Drives Oy © 2024.11
LC12L
L1'
L2'
L3'
PE
L1
L2
L3
AN447722908366en-000201 / 172K1110B |
Electrical Installation
9