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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:
1 C. }+ h9 ]. Q8 vFor parts not exceeding 450 V peak or d.c., the circuit capacitance shall not exceed 0,1 μF.8 V4 N0 N! N# S3 C
For parts whose voltage, U, exceeds 0,45 kV peak or d.c., but does not exceed 15 kV peak or
3 Z+ u1 N- p# ]) ~7 dd.c., the circuit capacitance shall not exceed 45/U nF, where U is expressed in kilovolts.) t2 b! E ^& l$ `# q5 d: S, T
NOTE 2 The limit of 45/U corresponds to an available stored charge of 45 μC. B1 X/ O. P g4 o
For parts whose voltage, U, exceeds 15 kV peak or d.c., the circuit capacitance shall not/ P0 i4 {2 X6 V. v' k$ m% g* X4 a! a: r
exceed 700/U2 nF, where U is expressed in kilovolts.
2 `0 q9 m% F- }7 M1 U" x3 S; f T5 i" g5 cNOTE 3 The limit of 700/U2 corresponds to an available energy of 350 mJ.
1 m5 D1 V$ t1 H; @/ b* \) C6 b: S# _5 p ~
60065 Clause 9.1.1有类似要求:; [' x4 j2 A( \. E4 q
and moreover5 j, Q! L; v: G4 f
c) the charge exceeds 45 μC for stored charges at voltages between 60 V d.c. and 15 kV d.c.,( s; A/ U$ [. V
or
' u/ A7 d+ X- L1 i( `4 G- id) the energy of discharge exceeds 350 mJ for stored charges at voltages exceeding 15 kV d.c. |
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