6-28
[6. NEPSI flameproof]
Select an installation location for an NEPSI flameproof model in accordance with the
following criteria.
• Hazardous areas in which this device can be installed are defined as follows.
[Zone 1 or 2 hazardous area]
Ex d IIC T6 Gb; Ex tD A20 IP66 T85°C
Ambient temperature range: −40 to +60°C
Warning
•
Fasten the cover sufficiently tightly, and do not under any circumstances remove
it with the power on if there is an explosive atmosphere surrounding the device.
Doing so can cause an explosion to occur.
Caution
•
For the cable-pulling equipment to be used at the device’s signal line exit ports, use
NEPSI-certified products (1/2 NPT or M20×1.5 screws) that conform to Ex d IIC.
• Be sure to ground the device using the ground terminal on its exterior.
• When using the device, give sufficient consideration to preventing corrosion, de-
formation, damage, etc., with respect to the products case, cover, and the like.
• When installing, operating, and maintaining the product, be sure to read this man-
ual. In addition, observe the requirements in the following standards.
GB50257-1996 Code for construction and acceptance of electric devices for
explosive environments and fire hazard electrical equipment installation engi-
neering
GB3836.13-2013 Explosive atmospheres - Part 13:Equipment repair,overhaul
and reclamation
GB3836.15-2000 Electrical equipment for explosive gas environments - Part
15: Electrical system installation in hazardous areas (other than mines)
GB3836.16-2006 Electrical apparatus for explosive gas atmospheres - Part 16:
Inspection and maintenance of electrical installation (other than mines)
GB12476.2-2010 Electrical apparatus for use in the presence of combustible
dust - Part 2: Selection and installation
GB15577-2007 Safety regulations for dust explosion prevention and protection
• Wiring work should strictly follow “People’s Republic of China Electrical Safety
Code for Areas with Danger of Explosion (Provisional).”
Protection levels, classified based on the possibility that the device could be
an ignition source
Gases with an ignition point of 85°C or higher
Class IIC explosive gases
Flameproof structure
To Next Page
Loading...
Need help?
General
