Grounding - Toshiba GF630 Instruction Manual

4.4 Grounding

Do not wire cables and replace parts
when power is supplied.
Wiring work and replacing
parts in the power-on state
DON'T may cause electric shock.
(1) Grounding of the GF630/LF620 type
Ground as shown in Figure 4.12. Make the grounding wire as short as possible. Use grounding
Integral
wire material of IV wire 5.5mm
instruments where grounding current may flow. (An independent grounding is preferable.)
Conductive material pipe
Example: Metal, etc.
•In the case that the piping is conductive material,
connect the grounding wires to the both ends of the
piping flange. (grounding resistance 100ohm or less).
Please connect the grounding cables
of detector to piping using the M5 screw
shown as Figure4.13 as needed.
(In the case that there are no threaded hole
with piping, please tap the threaded hole.)
※It is necessary to connect the ground cable
surely electrically.
CAUTION
2
Grounding terminal
Grounding wire
grounding resistance
A
100ohm or less
Figure 4.12 Grounding the GF630/LF620 Type
− ２７ −
Do not work on piping and wiring with wet hands.
Wet hands may result in electric shock.
DON'T
or more. Do not share a grounding wire with other
grounding ring
• In the case that the piping is non-conductive material,
perform grounding (grounding resistance 100ohm or less).
M5
Figure4.13 Grounding cable connection
(Detail of part A)
６Ｆ８Ａ０８８２
Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.
grounding resistance
100ohm or less
Grounding cable of detector