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不知道這是不是保護阻抗?6 K) O/ L' f6 Z, K+ e( t- ]& F
以下引自EN 60950-1:2002:1.5.7.2 Bridging capacitors
5 E! ^4 V9 W2 Z4 j$ oIt is permitted to bridge DOUBLE INSULATION or REINFORCED INSULATION by:7 ]5 j" ]% M! T! y- o
– a single capacitor complying with IEC 60384-14:1993, subclass Y1; or
4 |/ Y0 M. W$ M0 j– a single capacitor complying with IEC 60384-14:1993, subclass Y2, where the equipment
2 L$ [7 w$ ^3 X' N+ \, CRATED VOLTAGE is less than 150 V with respect to neutral or earth; or
6 g7 N" _/ O8 i7 }4 `/ E. h– two capacitors in series, each complying with IEC 60384-14:1993, subclass Y2 or Y4.+ W( [1 y" Y( ?: Q: F, g
A Y1 capacitor, or a Y2 capacitor used in accordance with the above second dash, is
# u" S) I* X2 a$ ]* ~considered to have REINFORCED INSULATION.
+ [9 m3 v; f1 @. aWhere two capacitors are used in series, they shall each be rated for the total WORKING, B; D7 H3 t3 j, N2 L
VOLTAGE across the pair and shall have the same nominal capacitance value.
7 T0 h S% \3 N: S) d- |) u! u4 O1.5.7.3 Bridging resistors* G4 M& K: ` W8 b% ?$ ?
It is permitted to bridge DOUBLE INSULATION or REINFORCED INSULATION by two resistors in series. The resistors shall each comply with the requirements of 2.10.3 and 2.10.4 for BASIC
5 d$ E/ l: c- b" `5 v/ kINSULATION or SUPPLEMENTARY INSULATION, as applicable, between their terminations for the total WORKING VOLTAGE across the pair and shall have the same nominal resistance value.
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