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60950中:2.5 Limited power sources
5 n6 d6 `, {- c n! h3 l9 zA limited power source shall comply with one of the following, a), b, c) or d):
% Z; ]0 D0 C2 U& Sa) the output is inherently limited in compliance with Table 2B; or) y! @2 k; ^/ _) V, {7 m7 W8 u& M
b) a linear or non-linear impedance limits the output in compliance with Table 2B. If a& U- Z. Q+ Q; X; _0 S
positive temperature coefficient device is used, it shall pass the tests specified in IEC
4 Y! ?& ]3 s% O( K* Q4 @3 n60730-1, Clauses 15, 17, J.15 and J.17; or1 D. m* G/ @9 W$ _1 p
c) a regulating network limits the output in compliance with Table 2B, both with and
1 U: X0 j+ f6 ?without a simulated single fault (see 1.4.14) in the regulating network (open circuit or/ h, l* l4 O) |4 b: Z( f
short-circuit); or
/ K) W3 ?' m2 w; }! E6 Td) an overcurrent protective device is used and the output is limited in compliance) Q) `( g3 F, l# F& W3 G# R
with Table 2C. |
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