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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 ,- r+ ^+ A/ V! i# z& d! O3 }9 |# q
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XDSL 不适用于电网的 Overvoltage category !!! ; C L- {, |$ r0 F2 _
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
% ~9 P0 i# K. z; g/ h, t* Ethe PRIMARY CIRCUIT is Overvoltage Category II. # k3 `" {3 n5 q2 i0 E) H6 p
# N6 _( | ^3 h3 i! d. K7 x4 _Transient overvoltage: + v. Q# t* z/ y$ S+ Y, G) w
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT0 j8 N/ m4 s `0 E- D
or a TNV-3 CIRCUIT; and) g) @6 ]: [0 U6 w* W3 X
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
- g1 m( G* N* e% P" C7 b) L- ror a TNV-2 CIRCUIT. |
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