Eaton Power Xpert C445 - Chapter 3-Installation and Wiring

18
Safety Figures
Safety Manual MN042004EN March 2017 www.eaton.com
ote:N All failure rate data in tables below are in FPMH
(Failures per million hours)
Symbol
C445BD-XALM
C445BD-XANM
C445BD-XALN
C445BD-XANN
C445BD-XDLM
C445BD-XDNM
C445BD-XDLN
C445BD-XDNN
C445BA-XDLM
C445BA-XDNM
C445BA-XDLN
C445BA-XANM
C445BA-XALN
Safety Integrity Level SIL 1 1 1 1
Hardware Fault Tolerance HFT 0 0 0 0
Failure rate for detected
safe failures ʎ
SD
(1) 0.229285 0.364605 0.276269 0.210949
Failure rate for
undetected safe failures ʎ
SU
(2) 1.326801 1.394441 1.597322 1.529682
Failure rate for detected
dangerous failures ʎ
DD
(3) 0.000423 0.000426 0.000426 0.000426
Failure rate for undetect-
ed dangerous failures ʎ
DU
(4) 0.751464 0.770906 0.770906 0.751464
Safe Failure Fraction SFF 68.4% 69.5% 70.9% 69.9%
Mean Time Before Failure MTBF 198683 192269 187112 193181
Average probability of
failure on demand PFD
AVG
7.519 X 10
-07
7.713 X 10
-07
7.713 X 10
-07
7.519 X 10
-07
Architecture 1oo1 1oo1 1oo1 1oo1
Lifetime 20 Yrs 20 Yrs 20 Yrs 20 Yrs
Proof Test Interval 1 Yr 1 Yr 1 Yr 1 Yr
Systematic capability 1 1 1 1