The Connection Of The Grounding Wire And Input Side Cable - Panasonic YP-060PF Operating Instructions Manual

Igbt controlled plasma arc cutting power source
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7 Connection (continue)

7.2 The connection of the grounding wire and input side cable.

Observe the following cautions to prevent electrical shocks. Touching an electrically charged
section can cause a serious electrical shock or burn.
·Attach a switch with fuse of specified capacity or no-fuse Breaker (or leakage breaker) to the
switch box for each equipment.
· Before installing or performing maintenance/inspection work, turn off all the input power
supplies at the distribution box; and overhaul at least 5 minutes after turning off the switch
box. After the safe working condition is confirmed, restart the operation.
The setting operation and ground connection of the input power source should be performed
by electrically qualified persons.
Please never execute the grounding connection with air hose, water supply pipes and
building iron frames, etc. which do not serve as sufficient ground.
Do not connect any grounding wire (earth lead) to them.
· Tighten the connection at joint sections of the cables, and insulate those sections properly.
· Never touch any part of the Product with wet hands.
To prevent fire caused by overheat of the cable, machine damage or unstable arc, Please
observe the following cautions:
·Please never place any heavy object on the cable or contact cutting position.
·Tighten the connection at joint sections of the cables.
7.2.1 The connection of the grounding wire
Please be sure that the wiring and grounding should be done by educated and/or skilled person.
(1) The connection of the earth lead (connect to the ground connection terminal)
(2) The grounding connection.
The grounding wire (Prepared
by the user)
The sectional area of conductor:
equal or bigger than that of input
side of the cutting power source.
Note:
Water supply pipes, building iron frames, etc. do not serve as sufficient ground.
Do not connect any grounding wire to them.
Earthing screw
(M8 bolt)
WARNING
CAUTION
Ground
18

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