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When measuring hazardous energy levels:
# R! g8 p' ^+ k$ oa) Should component open/shorts be considered when determining maximum energy
* W, i, B8 l+ ?8 D9 Dlevels?
* X' J# Z7 W+ z* yb) Should voltage tolerances per sub-clause 1.4.5 be used at the input power source?( U/ y* m' P& _+ w4 ?& e
APPLICATION GUIDELINE:& w* e: y* i5 d. F8 K0 w
a) When determining maximum energy levels, component faults should not be% W |! }& a1 I. \, \" l
considered.& K; p8 N. U2 [7 K |
b) Input power source voltage tolerances should only be considered when test results
$ z I$ I& H6 p9 |0 d& ^3 Rare borderline pass/fail.: Q( d; s: ?- X0 G) I
RATIONALE:+ q! |: A7 d3 Z$ J6 e+ ?" X7 C4 [
a) In its compliance statement, sub-clause 2.1.1.5 indicates the equipment should be
. e+ N! h6 r; T7 f2 _″operating under normal operating conditions.″( K$ a8 d2 {2 `! M- V
b) Most energy hazard measurements are associated with a regulated secondary d.c.5 a% H3 N6 r4 c5 }
outputs, so in most cases input supply tolerances will not affect the measurements.
9 H" U3 \& h1 D' M——P60950 2.1.1.5-1 |
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