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引用第40楼barry于2007-07-26 09:20发表的 : h: _: Y3 e' W/ \, C1 f: y
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$ w6 l6 a2 f2 m$ B; @/ @& x3 sADAPTOR 适用于 Overvoltage category 2 ,+ p/ ]! I1 k/ ], G5 Z1 w
8 @) S5 y# e; h" t qXDSL 不适用于电网的 Overvoltage category !!!
" J$ r1 i, h8 x) `: LA SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if
+ j \% y# M5 Y' @. G* [the PRIMARY CIRCUIT is Overvoltage Category II. ; U' q7 ]& _5 ?4 Z
. N! A7 y2 i2 {. w$ STransient overvoltage:
V! T' I* Q4 K: D3 I0 A1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT
# M4 i$ }" i1 o: d* G# yor a TNV-3 CIRCUIT; and
$ `" n) W0 I4 w8 E, g; C- f) Z1 Z– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
3 \! j' j [. L4 s5 J8 qor a TNV-2 CIRCUIT. |
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