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个人理解是跟电荷的能量危险有关,比如60950-1 Clause 2.4有类似要求:6 H6 c9 R f- d9 D
For parts not exceeding 450 V peak or d.c., the circuit capacitance shall not exceed 0,1 μF.
$ f8 O7 I1 f m; r7 YFor parts whose voltage, U, exceeds 0,45 kV peak or d.c., but does not exceed 15 kV peak or( F. ^! E: g/ h: W! n. N) ?
d.c., the circuit capacitance shall not exceed 45/U nF, where U is expressed in kilovolts.
# P: I/ Y$ [5 ?# F! _NOTE 2 The limit of 45/U corresponds to an available stored charge of 45 μC.: R: ^$ Y0 p& h ]2 i
For parts whose voltage, U, exceeds 15 kV peak or d.c., the circuit capacitance shall not
* I z; R: z6 W; d; {2 i! d5 n' I1 _exceed 700/U2 nF, where U is expressed in kilovolts.5 x2 r& p$ Z% N3 ]# D
NOTE 3 The limit of 700/U2 corresponds to an available energy of 350 mJ.
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60065 Clause 9.1.1有类似要求:
& Q4 ^2 {" {0 B, J0 Fand moreover. o" k2 X# B8 F B
c) the charge exceeds 45 μC for stored charges at voltages between 60 V d.c. and 15 kV d.c.,/ K$ A2 X) g5 Z7 q# ]2 p. a, x" A
or" N& \: ]$ \. | ?' f0 Q. d0 [
d) the energy of discharge exceeds 350 mJ for stored charges at voltages exceeding 15 kV d.c. |
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