|
|
When measuring hazardous energy levels:
$ C, X8 j4 U4 S- z7 ^ `a) Should component open/shorts be considered when determining maximum energy! ]( v1 B$ Y! o
levels?5 `- ?5 g x- z2 A. T1 g+ G
b) Should voltage tolerances per sub-clause 1.4.5 be used at the input power source?' N" p( y4 I; T4 R' f B' p2 k
APPLICATION GUIDELINE:
% J* F3 S5 S, Y4 p- ?! o. V; fa) When determining maximum energy levels, component faults should not be. e! i" O4 k* n k9 V S _
considered.
" i2 }' i$ t: t& a- K, m) Tb) Input power source voltage tolerances should only be considered when test results
" A/ O$ }7 L* I; B: E Pare borderline pass/fail.
) g0 H. ]7 o4 q$ b* ]3 B) ~* H p6 TRATIONALE:
$ c7 C* Y2 n7 U5 O5 Ca) In its compliance statement, sub-clause 2.1.1.5 indicates the equipment should be7 h* E& {- S+ @5 z, { {# c
″operating under normal operating conditions.″
* Q1 x, [$ n9 M% I O1 J8 ub) Most energy hazard measurements are associated with a regulated secondary d.c.
7 z7 m% q3 `5 c; f8 j$ Ioutputs, so in most cases input supply tolerances will not affect the measurements." K" L% ]* M( p. i% p
——P60950 2.1.1.5-1 |
|