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引用第40楼barry于2007-07-26 09:20发表的 :
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ADAPTOR 适用于 Overvoltage category 2 ,
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$ x! }- B d! O) r7 l6 D% kXDSL 不适用于电网的 Overvoltage category !!!
3 J* O8 P! h- @; @. S; ^5 WA SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if# F8 U6 m% Y& n6 ]- q9 C
the PRIMARY CIRCUIT is Overvoltage Category II.
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1 R, P/ c, B7 @: i# WTransient overvoltage: ! z s# i$ ^0 ^; c! n8 N
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT
7 f- _- {# [8 P* X3 k7 }2 @or a TNV-3 CIRCUIT; and$ ~6 `' W" v' \
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
. A1 U$ H6 W( V3 I8 x5 }or a TNV-2 CIRCUIT. |
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