Page 14 • MN06201 ║ Issue/Rev. 0.1 (2/20)
AccuLoad IV Installation and Maintenance Manual
Installation
(f) Grounding:
The Touch Keypad sensor is protected by an intrinsic safe barrier, the enclosure must
be grounded as per national electrical code regulations, for example NEC/CEC, etc.
Equipment bonding shall be provided at the external grounding facility terminal,
external connection is not required when using metallic conduit or armored cable.
External grounding facility terminal wire range:
10-12 AWG (5.26 mm
2
to 3.31
mm
2
wire).
3.1.2.
For INMETRO (Brazil) Approved Installations (Models ST and QT)
(a) Call cable entries must meet the requirements of ABNT NBR IEC 60079-1:
Any installation accessories used in the cable entries, such as cable glands, adapters
or bushings, must be certified as Ex d. The cable ends must be properly installed
and adequately protected against mechanical damage.
For a wiring system using conduits, a certified sealing unit must be used immediately
at the entrance of the enclosure. Any unused input must be correctly closed with a
certified device that guarantees the type and degree of protection (IP65).
(b) Special conditions for Safe Use:
Select cables and cable glands suitable for operation at 81° C.
Contact the manufacturer at the address indicated for information on the dimensions
of the flameproof joints.
(c) Cover Fasteners:
Special fasteners: The EX d enclosure cover mounting bolts must be grade 12.9
(steel) M8 x 1.25.
(d) Warnings:
Contains battery-powered internal circuits. To avoid igniting an explosive atmo
-
sphere, do not open the cabinet unless it is known to be non-hazardous. Component
replacement can impair intrinsic safety. To prevent ignition of an explosive atmo
-
sphere and to avoid electric shock, disconnect the power circuits before opening
the EX d enclosure. While the electrical circuits are energized, during operation,
keep the Ex d enclosure properly closed.
Note:
The maximum ambient temperature for the equipment is 60° C.
(e) Grounding:
The touch screen (if provided) is protected by an Intrinsic safe barrier, the Ex d
enclosure must be grounded in accordance with national electrical code regulations.
The ground connection must be made through the external ground terminal of the
Ex d enclosure, no external connection is necessary when using metal conduits or
shielded cables.
The cross section of the external ground wiring must be: 10-12 AWG (5.26 mm²
to 3.31 mm²)
Summary of Contents for ALIV-QT-XP
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