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<2.
Installation, Wiring and Piping>
2-15
IM 11T03E01-51E
2.4.7
Cables Wired to the Ground
When using the GD40R detector in an area requiring explosion protection, BE SURE to ground it
as per the Class A Grounding Standard using a conductor of at least 2 mm
2
in nominal thickness.
Also BE SURE to ground the GD402
converter as per the Class D Grounding Standard.
In the case of using GD40T detector, Intrinsically Safe Grounding shall comply with National
Electrical Code ANSI / NFPA 70 and Local Electrical Codes.
In the case of using GD40V detector, Intrinsically Safe Grounding shall comply with Canadian
Electrical Code and Local Electrical Codes.
Use No. 26 internal wiring terminals or the grounding terminals of the converter. (The appropriate
tightening torque for the internal wiring terminals is 0.4 N·m). Case-grounding terminal can be
used as protective ground terminal. When using the detector’s grounding terminals, attach M4
crimp terminals to the ends of the grounding cables. When crimping the terminals, use tools that
fit the terminals.
Earth cable
24 25 26
L N G
Terminal
Earthing of internal wiring terminal
Ground terminal
Lock washer
Ground wiring
crimp terminal
Joining advice of Converter
case ground terminal
Converter case
Earthing of enclosure wiring terminal
Figure 2.18
Power and Ground Wiring
Содержание GD402G /M1
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