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60950中:2.5 Limited power sources
# |# o$ b# K1 D: v. w* oA limited power source shall comply with one of the following, a), b, c) or d):
x8 \4 T" l5 o; h' A7 }4 C" s& _a) the output is inherently limited in compliance with Table 2B; or/ m B4 e& @( v0 u; s+ m+ M5 p5 h0 k
b) a linear or non-linear impedance limits the output in compliance with Table 2B. If a' ^* n' g# i6 v: J
positive temperature coefficient device is used, it shall pass the tests specified in IEC
' f( B3 u) n$ a/ H( i: x1 V. p8 e60730-1, Clauses 15, 17, J.15 and J.17; or' M0 ^5 ]( V* j! p
c) a regulating network limits the output in compliance with Table 2B, both with and
) t% S+ K5 G9 T; r1 p) [$ ]* X7 a7 Swithout a simulated single fault (see 1.4.14) in the regulating network (open circuit or
% J; A: \5 @) @( E; `short-circuit); or7 e( B# I8 w. ?/ V
d) an overcurrent protective device is used and the output is limited in compliance0 n" v6 t5 ^8 m) s
with Table 2C. |
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