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8.5.6 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.
Uint
Grounding 2
Uint
Grounding 2
Fig. 8-10 Requirements of power supply wiring
NOTE
Lightning
arrester
Building
Grounding 3
Lightning
arrester
Grounding
Surge
current
Grounding 3
19
Grounding
wire
wire
V.1
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