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When measuring hazardous energy levels:8 m3 X$ {/ m" r$ Q
a) Should component open/shorts be considered when determining maximum energy
w/ p. F- k+ ?; elevels?$ G2 u% ?. Y+ I0 U6 U: ~) ~& k
b) Should voltage tolerances per sub-clause 1.4.5 be used at the input power source?
- }3 I# |- y4 ` R- Z& dAPPLICATION GUIDELINE:
: h. f: P" N9 i( H$ S9 ?0 T! ca) When determining maximum energy levels, component faults should not be
. j; x% u8 }' @! L' e* {considered.
# W, W4 k7 D; Ib) Input power source voltage tolerances should only be considered when test results4 v+ P. H& O9 ^- O
are borderline pass/fail.
/ S$ I$ j; y c+ Z$ l7 ARATIONALE:6 ~. L6 I5 S% m1 {; l+ K
a) In its compliance statement, sub-clause 2.1.1.5 indicates the equipment should be# y# x7 P2 u( L
″operating under normal operating conditions.″
; {7 e, I+ J$ O6 q Y& Q( g" ? Xb) Most energy hazard measurements are associated with a regulated secondary d.c.
^8 v4 O* L, X# [6 p* u# Aoutputs, so in most cases input supply tolerances will not affect the measurements.
& ?" \' U7 x+ F( z7 ]- ]) `0 f——P60950 2.1.1.5-1 |
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