Changing The Emc Protection Level In An It System - Danfoss iC7 Series Design Manual

Design Guide | iC7 Series Air-cooled System Modules
1
L1
L2
L3
PE
Figure 24: Diagram of the LCL Filter
1
AC fuses
3
AFE module
5
The grounding wire

Changing the EMC Protection Level in an IT System

6.9
In an IT system, to change the EMC protection level of the AC drive from C3 to C4, disconnect the LCL Filter ground capacitor.
DAMAGE TO THE AC DRIVE FROM INCORRECT EMC LEVEL
The EMC level requirements for the AC drive depend on the installation environment. An incorrect EMC level can damage the
drive.
Before connecting the AC drive to the mains, make sure that the EMC level of the AC drive is correct for the mains.
l
1.
Loosen the screw of the grounding wire of the capacitor of the LCL Filter.
2.
Remove the grounding wire from the phase capacitor.
Danfoss Drives Oy © 2024.03
2
5
2
4
NOTICE
3
L1
DC+
L2
DC-
L3
LCL Filter
DC fuses
AJ389643111587en-000101 / 172F6361A |
4
DC+
DC-
39