Fisher 00275-8026-0001 Manuale Utente
C-1
APPENDIX C
CSA and FM Intrinsic Safety Approvals
CANADIAN STANDARDS ASSOCIATION (CSA)
The 275 is intrinsically safe for use in Class 1, Division 1, Groups A, B, C,
and D hazardous locations when connected to CSA certified intrinsic safety
barriers as indicated in the recreated connection diagram drawing displayed
below.
and D hazardous locations when connected to CSA certified intrinsic safety
barriers as indicated in the recreated connection diagram drawing displayed
below.
I.S.
Barrier
Power
Supply
Hazardous Area
Non-Hazardous Area
CSA Certified
Intrinsically Safe
Device
00275-0082
DWG No.
Rev. A.
Sheet 1 of 1
30V Max, 330 Ohms Min
28V Max, 300 Ohms Min
22V max, 180 Ohms Min
28V Max, 300 Ohms Min
22V max, 180 Ohms Min
Certified
intrinsic safety barriers are listed below
TITLE: 275 CSA INTRINSICALLY SAFE CONFIGURATION
“Ex1a”
INTRINSICALLY SAFE / SECURITE INTRINSEQUE
Load
+
_