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引用第40楼barry于2007-07-26 09:20发表的 :
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8 [$ I, D6 m! U5 p8 P* T% ?; ^0 fADAPTOR 适用于 Overvoltage category 2 ,
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XDSL 不适用于电网的 Overvoltage category !!! / r* i. P% a7 u2 {
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
7 {" {& {7 {0 D7 y( k2 Qthe PRIMARY CIRCUIT is Overvoltage Category II. 5 w1 r) o. u" D/ B2 U& m* Y8 w
9 |4 a- a: j6 _% A% rTransient overvoltage:
' F; W j5 l5 {9 }' B% q1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT3 T9 R; t( |) c3 _0 l6 U
or a TNV-3 CIRCUIT; and% ~0 @: k: X; o5 ^
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
% O; P" z- f* M2 s0 G: oor a TNV-2 CIRCUIT. |
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