Communications Diagnostics Technical data
20
Commander S100 User Guide
4.1.2 Three phase supply connections
Figure 4-2 Three phase power connections
4.1.3 Ground connections
The supply and motor ground connections are made using the ground busbar located at the bottom of the drive as shown in Figure 4-3. The drive
must be connected to the system ground of the A.C. supply. The ground wiring must conform to local regulations and codes of practice.
Figure 4-3 Ground connections (Size 1 shown)
4.1.4 Protective ground cable ratings
Minimum ground conductor size
Two copper conductors of the same cross-sectional area as the input phase conductor.
If the drive is connected via a plug/socket conforming to IEC60309 then a single protective earthing conductor of at least 2.5 mm
2
as part of a multi-
conductor cable with adequate strain relief is permitted.
L1
L2
Op onal EMC Filter
ti
Op onal Line Reactor
ti
L1
L2
Ground
Fuses /
MCB
Supply
L3
L3
U
V
W
The ground loop impedance must conform to the requirements of local safety regulations. The drive must be grounded by a connection
capable of carrying the prospective fault current until the protective device (fuse, MCB) disconnects the A.C. supply. The ground
connections must be inspected and tested at appropriate intervals.
WARNING
Содержание COMMANDER S100
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