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引用第40楼barry于2007-07-26 09:20发表的 :
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9 S1 o" T: U. `6 d* \ADAPTOR 适用于 Overvoltage category 2 ,) ?- Y$ h) ?, x, \) ^9 P
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XDSL 不适用于电网的 Overvoltage category !!! 5 i' }, Z; @5 ?) |+ p3 n& j
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
( ` R" D6 i' g; r; ]+ Jthe PRIMARY CIRCUIT is Overvoltage Category II.
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Transient overvoltage: 5 h5 d6 z0 ~$ A# e! c( ~% F
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT( D; x5 o& H8 s$ t: h K
or a TNV-3 CIRCUIT; and" { o; W" u# E2 X. o" q
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT+ \8 I/ L( m4 ^# Q- r1 I
or a TNV-2 CIRCUIT. |
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