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When measuring hazardous energy levels:
- e0 k/ r" m* t6 {! M% ia) Should component open/shorts be considered when determining maximum energy; V* V# Y( m% u2 W4 z. d
levels?7 h2 ?3 C, i5 h- W; h( ?
b) Should voltage tolerances per sub-clause 1.4.5 be used at the input power source?; t! h M" m- b/ L; A
APPLICATION GUIDELINE:" k0 l8 E$ N6 X' O( T! L
a) When determining maximum energy levels, component faults should not be
6 \2 k' m' c0 j: z& tconsidered.% z. L+ Z" f f
b) Input power source voltage tolerances should only be considered when test results# c+ P+ K- _. N0 i2 K- }6 R0 ?
are borderline pass/fail.6 W( ?2 F; m7 x5 J$ _0 Q2 A. f
RATIONALE:
7 o7 s6 P; k% x, s; ta) In its compliance statement, sub-clause 2.1.1.5 indicates the equipment should be
* {# @+ u+ X3 `( K' h″operating under normal operating conditions.″
; ^( \1 P+ w, S& sb) Most energy hazard measurements are associated with a regulated secondary d.c.
7 {" S' }1 ]# R$ ?5 I+ Ioutputs, so in most cases input supply tolerances will not affect the measurements." v$ j1 ]3 [! `: I; ?
——P60950 2.1.1.5-1 |
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