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8.4.6 Requirements for power supply wiring
Correct
Power
distribution
Manual
transformer
switch Fuses
Power
380-415V
3N~50Hz
Grounding 1
Wrong
Power
distribution
transformer
Manual
switch Fuses
Power
380-415V
3N~50Hz
Grounding 1
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.
8.4.7 Requirements for power cord connection
Correct
L1
L2 L3
L1
L2
L3
Uint
Grounding 2
Uint
Grounding 2
Fig. 8-16 Requirements of power supply wiring
NOTE
N
N
Fig. 8-17 Requirements for power cord connection
23
Lightning
arrester
Building
Grounding 3
Lightning
arrester
Grounding
wire
Surge
current
Grounding 3
Wrong
16
L1
L2 L3
L1
L2
L3
Grounding
wire
N
N
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