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60950中:2.5 Limited power sources
5 i B; F+ n/ o2 o* L/ A" t# P( W" cA limited power source shall comply with one of the following, a), b, c) or d):5 \6 u! m# @4 Y! b/ H' n7 c! ^: ^$ b
a) the output is inherently limited in compliance with Table 2B; or
# @* G& \3 v3 L& f Hb) a linear or non-linear impedance limits the output in compliance with Table 2B. If a
/ K3 R5 V" V# E" B, I- {5 w+ Hpositive temperature coefficient device is used, it shall pass the tests specified in IEC
$ Z0 ~/ E! R" |' [0 g2 E* ^60730-1, Clauses 15, 17, J.15 and J.17; or% C0 e& i3 T! E. Q. ?- C
c) a regulating network limits the output in compliance with Table 2B, both with and# [6 V! }5 K; q; d9 {) _) U: i
without a simulated single fault (see 1.4.14) in the regulating network (open circuit or
4 h9 Z! f( B z4 \short-circuit); or' Q; V1 O- B, u# b; v) I9 S7 W
d) an overcurrent protective device is used and the output is limited in compliance( V. c5 Q: k5 X& ]
with Table 2C. |
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