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60950中:2.5 Limited power sources
* Q2 W0 F$ }3 n/ O) Z9 t6 eA limited power source shall comply with one of the following, a), b, c) or d):
# Y/ K! f: v- f, e7 C! ]3 Da) the output is inherently limited in compliance with Table 2B; or" b% N, y4 B6 K" I" `: `1 ]6 b
b) a linear or non-linear impedance limits the output in compliance with Table 2B. If a5 W, a- Z6 o3 J
positive temperature coefficient device is used, it shall pass the tests specified in IEC
% O7 ?$ x: w9 U+ o7 a60730-1, Clauses 15, 17, J.15 and J.17; or# M g# j- C; Z0 m: k* v% W
c) a regulating network limits the output in compliance with Table 2B, both with and
4 B- ^' X& X0 Lwithout a simulated single fault (see 1.4.14) in the regulating network (open circuit or' t3 c- u& @; m5 `; L
short-circuit); or
4 y. T |# e4 r3 md) an overcurrent protective device is used and the output is limited in compliance& `* F4 d5 X4 l
with Table 2C. |
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