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引用第40楼barry于2007-07-26 09:20发表的 : |( Z! o; m& Y' g% F8 O2 _
( c u- U9 X+ }9 R
) Z4 M" D& u/ v0 C E- DADAPTOR 适用于 Overvoltage category 2 ,/ f% ?3 f- o& V
+ g5 e$ k" ~9 S `# MXDSL 不适用于电网的 Overvoltage category !!!
6 }- \( v1 Q4 r! U tA SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if( U, a) t6 G% N) m/ m
the PRIMARY CIRCUIT is Overvoltage Category II. 1 t( k) A* f+ a1 I2 q: w1 P, b) v/ R
: O" [. F1 H$ v9 p1 g& @Transient overvoltage:
( P0 r; ?7 ^( {" f% w* v1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT2 F: F0 E% m: u/ k; U0 U1 l; |
or a TNV-3 CIRCUIT; and
! s: f/ \2 K7 I2 Z" ~; r, U: H# @- ]– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
, z4 M+ F4 t5 P0 E! Ror a TNV-2 CIRCUIT. |
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