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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 ,; `# A# L" x! J y8 |, m8 s
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XDSL 不适用于电网的 Overvoltage category !!! ' s& w- @, b1 Q
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
/ q5 z7 w c2 E5 m9 ?the PRIMARY CIRCUIT is Overvoltage Category II. ) ]: p& L; m. l% q
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Transient overvoltage:
& z! K) R+ _1 e% I; a# [1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT' c/ b( R+ Q6 m' z6 n( N
or a TNV-3 CIRCUIT; and
% G3 N/ O- t$ j4 S; R– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT2 {. h( E1 B6 q }/ r+ n" a
or a TNV-2 CIRCUIT. |
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