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60950中:2.5 Limited power sources
2 R" |. }( m& x/ p6 V) G" I$ YA limited power source shall comply with one of the following, a), b, c) or d):
$ U. K6 j% y O* Q, c5 [a) the output is inherently limited in compliance with Table 2B; or5 G0 S( A0 W9 s/ O3 g" } C! S
b) a linear or non-linear impedance limits the output in compliance with Table 2B. If a8 w0 ]+ P$ S6 ?; s' m( v) D
positive temperature coefficient device is used, it shall pass the tests specified in IEC- D9 F* F5 ]/ t( p1 E
60730-1, Clauses 15, 17, J.15 and J.17; or% E$ }: v* H1 C9 u$ \
c) a regulating network limits the output in compliance with Table 2B, both with and
2 I+ ~. s8 G" T) Jwithout a simulated single fault (see 1.4.14) in the regulating network (open circuit or
}% w$ Y7 _6 k0 }( ^short-circuit); or
2 ~! F# G4 h9 a; k' F! Xd) an overcurrent protective device is used and the output is limited in compliance
. p7 G R7 ]# e) Z% \with Table 2C. |
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