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引用第40楼barry于2007-07-26 09:20发表的 :" V4 k5 k& |1 {3 f& n! U3 s
7 e$ d) O) I7 `1 u0 Q: g- q6 k4 F( d" {: d
ADAPTOR 适用于 Overvoltage category 2 ,
( k) J2 t: H2 p
1 I9 ^6 K3 g" U/ M5 @, uXDSL 不适用于电网的 Overvoltage category !!!
' a9 P* m& B) H4 w3 CA SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if( q; @3 M! r3 {9 i/ q
the PRIMARY CIRCUIT is Overvoltage Category II.
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Transient overvoltage:
, l& S: p' g0 F1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT
" {$ c4 }; K) z* a ror a TNV-3 CIRCUIT; and. Z' _( _2 x) J# f
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT) Y1 |1 e, M! l+ C0 c$ C' W
or a TNV-2 CIRCUIT. |
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