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4.4 Grounding
CAUTION
Do not wire cables and replace parts
when power is supplied.
Do not work on piping and wiring with wet hands.
DON’T
Wiring work and replacing
parts in the power-on state
may cause electric shock.
DON’T
Wet hands may result in electric shock.
Ground as shown in Figure 4.10. Make the grounding wire as short as possible. Use
grounding wire material of IV wire 5.5mm
2
or more. Do not share a grounding wire
with other instruments where grounding current may flow. (An independent
grounding is preferable.)
Figure 4.10 Grounding the LF516/LF546 Type
Grounding terminal
grounding resistance
100 or more
• If the piping material is conductive, connect
the grounding wires to the both ends of the
piping flange.
• If the piping material is non-conductive, perform
grounding (grounding resistance or less).
Conductive material pipe
Example: Metal, etc.
Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.
Grounding wire