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60950中:2.5 Limited power sources2 `* Q) p1 x, Y
A limited power source shall comply with one of the following, a), b, c) or d):: o6 j9 s& b- w) G1 I2 f0 ^
a) the output is inherently limited in compliance with Table 2B; or
' T9 G4 P! d) yb) a linear or non-linear impedance limits the output in compliance with Table 2B. If a, j; r# v) @9 ]$ x& q
positive temperature coefficient device is used, it shall pass the tests specified in IEC( o# l1 U9 G0 s8 S4 G
60730-1, Clauses 15, 17, J.15 and J.17; or" f4 W& i. T$ q; z! ]4 n. s7 ]
c) a regulating network limits the output in compliance with Table 2B, both with and0 w* q \6 g! V) N5 G: d; E7 g
without a simulated single fault (see 1.4.14) in the regulating network (open circuit or
' n+ ^$ {8 K7 X. eshort-circuit); or4 i" n+ @* @. r0 Z, U& E! E. E! x
d) an overcurrent protective device is used and the output is limited in compliance3 N, w* z b/ g
with Table 2C. |
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