Toshiba manual Grounding of the LF414/LF620F type, － ３２ －, ６Ｆ８Ａ０８７０, Don’T

６Ｆ８Ａ０８７０

4.4 Grounding

CAUTION

„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.

„Do not work on piping and wiring with wet hands. Wet hands may result in electric shock.

DON’T

(1) Grounding of the LF414/LF620F type

Integral

Ground as shown in Figure 4.10. Make the grounding wire as short as possible. Use grounding wire material of IV wire 5.5mm2 or more. Do not share a grounding wire with other instruments where grounding current may flow. (An independent grounding is preferable.)

Conductive material pipe

Example: Metal, etc.

Grounding terminal

Grounding wire

•If the piping material is conductive, connect the grounding wires to the both ends of the piping flange.

Piping of non-conductive material Example: Resin or metal piping whose inside is resin-lined, etc.

Grounding terminal

Grounding wire

grounding resistance 100Ωor less

•If the piping material is non-conductive, perform grounding (grounding resistance 100Ω or less).

Figure 4.10 Grounding the LF414/LF620F Type

－ ３２ －