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60950中:2.5 Limited power sources
: ~5 {7 f- W* K6 t: m/ t, xA limited power source shall comply with one of the following, a), b, c) or d):
3 g X+ K; X3 i6 O& K& ]a) the output is inherently limited in compliance with Table 2B; or& j+ _/ B- H1 m
b) a linear or non-linear impedance limits the output in compliance with Table 2B. If a
9 h7 B4 q `' ?positive temperature coefficient device is used, it shall pass the tests specified in IEC0 W! `' S. [2 s3 U- Z4 H
60730-1, Clauses 15, 17, J.15 and J.17; or
% ~& C& p6 q; }; A, ec) a regulating network limits the output in compliance with Table 2B, both with and* I2 H- L! V9 q$ p: T8 L( B- U3 w
without a simulated single fault (see 1.4.14) in the regulating network (open circuit or+ g1 f: m5 S; C; W9 }
short-circuit); or% D7 C3 E0 ]" l
d) an overcurrent protective device is used and the output is limited in compliance
7 F& n! ~6 o% ]/ r7 `5 Kwith Table 2C. |
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