YOKOGAWA ADMAG AXR User Manual page 30

[General - purpose Use/Explosion Proof Type
except TIIS]
600 V vinyl-insulated cable
(2 mm or larger)
2
• Class D requirements (grounding resistance,
100 Ω or less).
Optional code A (lightning protector): Class C
requirements (grounding resistance, 10 Ω or
less).
• Explosion proof type except TIIS: Domestic
electrical requirements as regulated in each
country.
[TIIS Explosion Proof Type]
Hazardrous
area
Grounding ring
• TIIS Explosion Proof Type: Grounding resistance of 10 Ω or less is
necessary for class A grounding
terminal.
Grounding resistance of 100 Ω or less
is necessary for Functional grounding
terminal.
When the optional code A is selected,
grounding resistance of 10 Ω or less is
necessary for Functional grounding
terminal.
In case grounding rings
are used.
Figure 4.4.3 Grounding
Grounding ring
F0409.ai
Non-hazardrous
area
Class A
grounding
In case grounding rings are
not used.
(Available only for metal piping)
F0410.ai
<4. WIRING>
IMPORTANT
Class A grounding should be installed in non-
hazardrous area.
4-5
IM 01E30D01-01EN