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60950中:2.5 Limited power sources; w6 K# E7 o) ]8 [, a; d! S7 E+ @7 r
A limited power source shall comply with one of the following, a), b, c) or d):
& V: x" o, A9 e+ X ^& m: j2 ]a) the output is inherently limited in compliance with Table 2B; or7 L2 [0 q5 }. \' P7 ]2 {
b) a linear or non-linear impedance limits the output in compliance with Table 2B. If a
* T' S1 r; q% m# O+ J6 f. V: Epositive temperature coefficient device is used, it shall pass the tests specified in IEC1 q- b6 ^# ]; M& s* ]
60730-1, Clauses 15, 17, J.15 and J.17; or( A, f* s( T7 Z6 k( \
c) a regulating network limits the output in compliance with Table 2B, both with and) o- h7 E. o' {+ v$ j) g' a
without a simulated single fault (see 1.4.14) in the regulating network (open circuit or5 ?7 C8 c- B5 B- ^
short-circuit); or# U( J8 }% l% S6 U0 U
d) an overcurrent protective device is used and the output is limited in compliance
: Y. r( @2 C) m4 ^0 a' Rwith Table 2C. |
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