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引用第40楼barry于2007-07-26 09:20发表的 :/ _' C9 {5 _7 S
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$ z# U6 o* O+ m e/ h2 V, K3 |4 F+ VADAPTOR 适用于 Overvoltage category 2 ,# y2 i. Q1 o8 A& m. Y, ^2 g- w
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XDSL 不适用于电网的 Overvoltage category !!! 4 e8 j% ~6 h# O9 n, `4 y* x
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
, O! b3 ]2 V& y6 u% `' Dthe PRIMARY CIRCUIT is Overvoltage Category II.
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5 [8 c1 j) N e; @: y5 mTransient overvoltage:
4 e$ S: O# z! l L0 n1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT
2 \. n6 A7 x" e0 [; k0 l& y, Z1 p# vor a TNV-3 CIRCUIT; and8 D# u! Z' ^( u/ x1 Y/ \, M
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT# J4 C% n% w2 y% C Q2 _% V
or a TNV-2 CIRCUIT. |
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