Yokogawa YFGW710 - Manual (Page 37)

<A3. YFGW710 Field Wireless Integrated Gateway>
A3-17
IM 01W01F01-01EN
External Antenna
Housing of YFGW710 Housing of YFGW710
Extension cable 2
Length: 10 m or 3 m
Extension cable 1
Length: 3 m or 1 m
Extension cable
Length: 3 m or 1 m
External Antenna
Arrester
Ground Wiring
Protect by
Self-bonding tape
Protect by
Self-bonding tape
FA0314.ai
Fig. A 3-13 Wiring of external antenna
l Mounting of Arrester and Wiring
Mount an arrester between the extension cables and connect the grounding cable to the ground-
ing terminal of the arrester.
Connect the grounding cable to the grounding terminal on the main body. Class D grounding (the
third class grounding) with the grounding resistance of 100 Ω or less is necessary. Do not share
the ground with other devices.
l
Applicable Grounding Cable (Insulated wire for industrial equipment)
Examples:
• 600 V polyvinyl chloride insulated wires (IV): JIS C3307
• Polyvinyl chloride insulated wires for electrical apparatus (KIV): JIS C3316
• 600 V grade heat-resistant polyvinyl chloride insulated wires (HIV): JIS C3317
• Heatproof vinyl insulated wires VW-1 (UL1015/UL1007)
Wire Size
• Core: AWG14 to 13 (2 to 2.6 mm 2 )
Terminal Treatment
• Ring terminal for M4: With insulation covers