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When measuring hazardous energy levels:' N0 H5 w) [9 n6 I
a) Should component open/shorts be considered when determining maximum energy) n" M" D% J% l, E4 z% e
levels?! f# U8 D/ t- O: d# n7 w% S
b) Should voltage tolerances per sub-clause 1.4.5 be used at the input power source?
" x) [9 y1 L( ]! F1 G7 g) `6 K0 w sAPPLICATION GUIDELINE:
, o, Y/ x' \% e5 [3 g9 n" Ca) When determining maximum energy levels, component faults should not be
$ T B6 k. l8 n6 Q9 T! R, {7 Oconsidered.- X+ z( d w6 S- L
b) Input power source voltage tolerances should only be considered when test results
4 d2 Q6 y8 x. nare borderline pass/fail." }' X0 T5 {3 J5 |
RATIONALE:, S8 I' u' Q% n
a) In its compliance statement, sub-clause 2.1.1.5 indicates the equipment should be
* F1 U& b+ u, r: G ~2 |' I' ?″operating under normal operating conditions.″
( F0 d v% j2 T# d, }* {b) Most energy hazard measurements are associated with a regulated secondary d.c.
% z( E( ~; T7 [3 j @1 Foutputs, so in most cases input supply tolerances will not affect the measurements. F0 Y: N" ~8 A0 E& b
——P60950 2.1.1.5-1 |
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