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引用第40楼barry于2007-07-26 09:20发表的 :
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ADAPTOR 适用于 Overvoltage category 2 ,
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XDSL 不适用于电网的 Overvoltage category !!! ) T3 M2 i4 z: [. f2 d
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
* g v0 r+ E bthe PRIMARY CIRCUIT is Overvoltage Category II. 9 e- |( ]5 S( |' m' y; ?$ L
9 D: t$ k# R" Q) X [Transient overvoltage:
, i5 {7 `$ k8 l. a8 w1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT3 [; s( i7 I0 p
or a TNV-3 CIRCUIT; and& G9 s) P/ X: z5 B) f
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT& B0 k+ |* ~# ?* r( ?, V8 J( C' |
or a TNV-2 CIRCUIT. |
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