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引用第40楼barry于2007-07-26 09:20发表的 :
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. U- M I' O- ^9 S7 s0 W9 C8 ~ADAPTOR 适用于 Overvoltage category 2 ,! D2 v9 H R$ d: q2 G9 o, u2 S
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XDSL 不适用于电网的 Overvoltage category !!!
# y, J/ Y$ S! D; m( aA SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
( S \; S) V" hthe PRIMARY CIRCUIT is Overvoltage Category II. & e4 b9 G6 K3 R: d
& U4 K, s; }- w; `( c& [, dTransient overvoltage: 4 c- ^3 Q2 t5 v2 O& l$ }
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT* h3 ~5 U+ b1 Y& u% o& t! X8 h1 K
or a TNV-3 CIRCUIT; and) u2 v& e- Y$ B+ b+ J. K1 \7 }# \5 A
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
/ h6 E0 T8 E( yor a TNV-2 CIRCUIT. |
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