18
Grounding 3Grounding 2Grounding 1
Building
Grounding
wire
Lightning
arrester
Power
distribution
transformer
Correct
8.4.6 Requirements for power supply wiring
Manual
switch
Fuses
Power
380-415V
3N~50Hz
Uint
Surge
current
Grounding 3Grounding 2Grounding 1
Grounding
wire
Lightning
arrester
Power
distribution
transformer
Wrong
Manual
switch
Fuses
Power
380-415V
3N~50Hz
Fig. 8-9 Requirements of power supply wiring
Uint
NOTE
Do not connect the grounding wire of the lightning arrester to the unit shell. The grounding wire of the
lightning arrester and the power supply grounding wire must be configured separately.
Correct
8.4.7 Requirements for power cord connection
L1 L2 L3 N
L1 L2 L3 N
16
Wrong
L1 L2 L3 N
L1 L2 L3 N
Fig. 8-10 Requirements for power cord connection
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