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60950中：2.5 Limited power sources4 W' P. k& L$ x4 m" m
A limited power source shall comply with one of the following, a), b, c) or d):
: i" B( v" ]2 G& \$ }' ^a) the output is inherently limited in compliance with Table 2B; or
6 E+ T1 @" J( _8 i& Ub) a linear or non-linear impedance limits the output in compliance with Table 2B. If a
5 |: @+ l$ n5 l& A, B$ r. \9 V, t$ dpositive temperature coefficient device is used, it shall pass the tests specified in IEC0 V3 a9 D" |1 y
60730-1, Clauses 15, 17, J.15 and J.17; or
p/ ?- D- Z, {+ G2 kc) a regulating network limits the output in compliance with Table 2B, both with and, ~% \2 S5 F$ ~3 J* L- q. n1 v- n
without a simulated single fault (see 1.4.14) in the regulating network (open circuit or
0 N- J& Z9 q( }, M' Y' |# V2 Qshort-circuit); or8 n: S+ x9 G! N! f
d) an overcurrent protective device is used and the output is limited in compliance
+ }7 P. |- c( c! Wwith Table 2C. |
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