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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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XDSL 不适用于电网的 Overvoltage category !!! . {7 q7 y* f1 T% d& n0 y3 W
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if' T- ~8 g5 ^" \* `
the PRIMARY CIRCUIT is Overvoltage Category II. 5 ?* p! J6 \ [& G0 y
k7 o0 I8 ]7 \! kTransient overvoltage: $ i$ ^* R* E0 G+ s9 @
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT. F$ Y& ~3 ?! [3 u
or a TNV-3 CIRCUIT; and
* ?, j) R. R9 X- D# M& d! s– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
* b' U' q. L5 X2 E& j0 R- lor a TNV-2 CIRCUIT. |
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