|
|
引用第40楼barry于2007-07-26 09:20发表的 :1 T1 A/ Y* |: F) j- H. T5 q
5 }0 `- }, y3 W/ N* N
& V( j4 w7 ]0 _( M+ m3 b2 n; u- s1 t
ADAPTOR 适用于 Overvoltage category 2 ,
. q$ `+ t2 u5 Y+ N
, Q2 s x- z9 m9 |8 [" m* j: sXDSL 不适用于电网的 Overvoltage category !!! + r9 w* ^) [4 J& Q2 k1 R D! n
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
8 B: D, s) _. B# Vthe PRIMARY CIRCUIT is Overvoltage Category II. + T9 ]6 W% U+ Q) ?) n9 C" a# |
3 p+ d' S2 ^/ \
Transient overvoltage: 5 V7 A1 Q* @+ z6 A+ r! h) ~' |
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT
, B: T" A3 g3 V; y' Z% E. lor a TNV-3 CIRCUIT; and
7 L* {3 L: Z" \– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT; o _ }2 `' I1 @+ j3 q
or a TNV-2 CIRCUIT. |
|