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60950中:2.5 Limited power sources
4 D4 M/ F9 W- V+ `7 X1 WA limited power source shall comply with one of the following, a), b, c) or d):; o. A+ U* _. h; Y' w: z9 n
a) the output is inherently limited in compliance with Table 2B; or
1 u1 Z& S( G5 @$ {* G4 x0 _b) a linear or non-linear impedance limits the output in compliance with Table 2B. If a0 P, _2 @% k2 v! r' x8 g
positive temperature coefficient device is used, it shall pass the tests specified in IEC
) ]. f& \2 [% O6 T d3 ?5 m60730-1, Clauses 15, 17, J.15 and J.17; or/ f1 o0 u" a9 c2 o
c) a regulating network limits the output in compliance with Table 2B, both with and$ S0 L, w% r. H; k9 g2 K; F9 ?$ I
without a simulated single fault (see 1.4.14) in the regulating network (open circuit or
* L& O; |4 e9 h% I4 X, Jshort-circuit); or
, d, s% s5 Q; ]8 h* d: pd) an overcurrent protective device is used and the output is limited in compliance
& [# [3 K4 H7 x) vwith Table 2C. |
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