Approval - ABB JDF300 Operating Instruction

48 J D F 3 0 0 | F I E L D I N D I C ATO R | O I/ J D F 3 0 0 - E N R E V. B
. . .12 Hazardous Area considerations
c) II 3 G Ex ic IIC T6...T4 Gc, II 3 D Ex tc IIIC T85 °C Dc; IP66, IP67.
The meaning of Atex code is as follows :
• II: Group for surface areas (not mines)
• 3: Category
• G: Gas (Dangerous media)
The other marking refers to the protection type used according
to relevant EN Standards and is valid also for IECEx as detailed
in FM Approvals certificate number IECEx FME 18.0004X:
• Ex ic: "Intrinsically safe" "ic"
• IIC: gas group
• Tx: Temperature class of the field indicator (which
corresponds to 135°C max) with a Ta from -50°C to +85°C
as it shown on the following sketch (left side)
• II 3D Ex tc IIIC Tx Dc IP67
• II: Group for surface areas (not mines)
• 3: Category of equipment
• D: Dust (Dangerous media)
• Ex tc: type of protection "tc" means protection by enclosure
technique
• IIIC: for Dust application
• Tx: Temperature class of the field indicator
• Dc: Equipment Protection Level
• IP67: degree of protection of field indicator acc. EN60079
About the applications, this field indicator can be used in Zone
2 (Gas) (unlikely/infrequent hazard).
About Dust application, JDF300 can be used in Zone 22
(unlikely/infrequent hazard) as it shown on the following
skecth.
Application for field indicator Ex ic/tc categories Gc and Dc
Application with Gas
Zone 2
JDF300
Category 3 G Ex ic
Note: the field indicator must
be connected to a supply
with 42V d.c. max output
voltage as above indicated.
The Imax of the field
indicator is shown in chart
"Entities for Ex D and Ex ic".
IMPORTANT
Note for field indicator with combined approval
Before installation of the field indicator, the customer should
permanent mark his chosen Protection Concept on the safety
label. The field indicator can only be used with according to
this Protection Concept for the whole life. If two or more
types of protection box (on safety label) are permanent
marked, the field indicator must be removed from hazardous
classified locations. The selected Type of Protection is
allowed to be changed only by manufacturer after a new
satisfactory assessment.
Application with Dust
Zone 22
JDF300
Category 3 D Ex tc; IP6x
Note: the protection is mainly
assured by the "IP" degree
associated to the low power
from supply.