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引用第40楼barry于2007-07-26 09:20发表的 :
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4 g+ t; G) |, ~ADAPTOR 适用于 Overvoltage category 2 , W2 S6 A/ Y; w' {4 ~$ G! u
) _/ A+ u' p! s' p( K: IXDSL 不适用于电网的 Overvoltage category !!! 0 U: c; w: p ^
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if1 E9 N' T7 B7 G' J0 b8 H. ~& p
the PRIMARY CIRCUIT is Overvoltage Category II.
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2 r; a9 I5 _' m& {$ ]Transient overvoltage:
+ G- r/ g) g7 j" X' y1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT
* H0 R. k& w" Uor a TNV-3 CIRCUIT; and
7 A" K, {5 Q X$ c4 O2 W V& D– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT4 R( j5 w$ x# T' G4 A
or a TNV-2 CIRCUIT. |
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