Danfoss VLT AutomationDrive FC 301 Series Design Manual page 146

Electrical Installation
9 9
Figure 9.33 Motor Connection for Enclosure B3
Figure 9.34 Motor Connection for Enclosure B4
144
Design Guide
Figure 9.35 Motor Connection Enclosures C1 and C2 (IP21/
NEMA Type 1 and IP55/66/NEMA Type 12)
Figure 9.36 Motor Connection for Enclosures C3 and C4
9.5 Ground Leakage Current Protection
Follow national and local codes regarding protective
grounding of equipment with a leakage current > 3.5 mA.
The protective ground connection must have a cross
section of minimum 10 mm
wires each with the same cross-section as the phase wires.
Adjustable frequency drive technology implies high
frequency switching at high power. This generates a
leakage current in the ground connection.
The ground leakage current is made up of several contri-
butions and depends on various system configurations
including RFI filtering, motor cable length, motor cable
shielding, and adjustable frequency drive power.
Rev. 2014-04-04 All rights reserved.
88 89
81 8
DC-
DC+ R-
R+
91
92
93
96
97
L1 L2 98
L3
U
V
W
95
99
2 or consist of two separate
MG33BF22