Wiring Requirements; Protective Earthing; Electrical Connection - ABB 364G Series Manual

Wiring requirements

For signal / power connection use twisted, stranded pairs of wiring no 18 to 22 AWG / 0.8 to 0.35 mm
to 5,000 feet (1 500 meters). Longer loops require larger wire.
If a shielded wire is used the shield should be grounded only at one end, not b oth ends. In case of wi ring at
transmitter end, use the terminal located inside the housing marked with the symbol:

Protective Earthing

Wire this ground connection marked with the symbol
For a transmitter measuring loop an earth ground should maintain a resistance of 5 ohms or less.
Use a heavy conductor, at least 15 AWG / 1,6 mm
A protective grounding connection is absolutely necessary to ensure personnel protection, to protect against
surge and to prevent explosions in potentially explosive atmosphere.
The surge protection is always present and if the transmitter is installed in a Hazardous classified location, it
must be powered from a voltage source isolated from mains (galvanic separation). Furthermore the potential
equalization for the entire powering cable must be guaranteed since the intrinsic safety circuit of the

Electrical connection

Do NOT make any electrical connections unless the electrical code designation stamped on the transmitter
data plate agrees with the classification of the area in which the transmitter is to be installed. Failure to
Hazardous
(Classified)
Location
WARNING !
WARNING !
transmitter is grounded.
WARNING !
comply with this warning can result in fire or explosion.
Unclassified
Hazardous
Location
to a suitable earth ground.
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364Ax-Gx Instruction Manual
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