Mettler Toledo IND780 Guia De Instalacion página 49

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64063214 | 07 | 02/2018
The IND780 is not to be used in an area with more than pollution degree 2 as defined in
IEC60664-1.
To meet ATEX and IECEx requirements, all cable entry devices and blanking elements shall be
certified in type of explosion protection increased safety 'e', suitable for at least IP65 and
correctly installed.
The grounding connection at the rear of the unit shall be connected to the potential equalizing
system within the explosive atmosphere.
When wiring to the panel mount terminal, protective power ground shall be a minimum of
4.5mm² or size 10 awg stranded wire. Phased conductors (neutral & line) shall be minimum
of .9mm² (size 18awg) and maximum of 3.6mm² (size 12 awg) stranded wire.
When wiring to the IND780 terminal, the gage (or cross-sectional area) of the protective
power ground must be equal to or greater than the gage (or cross-sectional area) of the power
phased connectors. The power phased connectors (neutral and line) shall be a minimum of
2
0.9mm (size 18awg) and a maximum of 3.6mm
Provision shall be made to prevent transient disturbances from exceeding 140% of the rated
voltage.
THE IND780 TERMINAL MUST BE INSTALLED AND MAINTAINED PER THE ABOVE SPECIAL
CONDITIONS WITHOUT EXCEPTION. FAILURE TO DO SO COULD RESULT IN BODILY HARM
AND/OR PROPERTY DAMAGE.
METTLER TOLEDO IND780 Division 2 and Zone 2/22 Installation Guide
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(12awg) stranded wire.
WARNING
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