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60950中:2.5 Limited power sources
5 a5 C# a7 B+ fA limited power source shall comply with one of the following, a), b, c) or d):& R2 }& C) F1 N' L- ^
a) the output is inherently limited in compliance with Table 2B; or
( B! X5 v( A" Y ?& ?* Q# X; wb) a linear or non-linear impedance limits the output in compliance with Table 2B. If a9 J+ c k" @ L% ?$ r6 m
positive temperature coefficient device is used, it shall pass the tests specified in IEC
$ f5 L, X9 c6 I4 J4 x4 C. A5 s60730-1, Clauses 15, 17, J.15 and J.17; or
* X8 _" [: G1 h# H. b6 {' Fc) a regulating network limits the output in compliance with Table 2B, both with and
( U1 a( }! S1 \: H1 Owithout a simulated single fault (see 1.4.14) in the regulating network (open circuit or9 v6 m3 {! ~; ^( v( I Y9 z5 w
short-circuit); or, ]7 |4 G) n4 Q6 C9 b
d) an overcurrent protective device is used and the output is limited in compliance
0 I/ u% S" O/ @: [" Rwith Table 2C. |
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