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引用第40楼barry于2007-07-26 09:20发表的 :: r6 A7 D, j& _* A" S+ M
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3 T, J1 N% V' f" s! @( OADAPTOR 适用于 Overvoltage category 2 ,
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XDSL 不适用于电网的 Overvoltage category !!!
' k1 a1 X2 H! h( {4 m6 k3 QA SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
$ y5 g t; _; x8 X6 `the PRIMARY CIRCUIT is Overvoltage Category II. ( q/ N8 t; u3 m
9 `$ r3 p! u# h+ KTransient overvoltage: + A9 g! h4 S# H7 b
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT( w* L: Q: _- N8 n/ R
or a TNV-3 CIRCUIT; and
! U$ H" N' ?5 k. q& l: P: f9 Q0 x2 z– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT! ]( H2 B3 i( v, D6 F/ d
or a TNV-2 CIRCUIT. |
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