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引用第40楼barry于2007-07-26 09:20发表的 :" Q$ U* h# a" o# ?5 l, ~
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2 Z7 w. ^, {& P3 m* BADAPTOR 适用于 Overvoltage category 2 ,
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; O' U+ N1 U/ B1 {0 e2 h( \XDSL 不适用于电网的 Overvoltage category !!! 7 h; `" B$ a+ h, x' e k2 V
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if& S7 z. I; j0 J5 ?: C: A
the PRIMARY CIRCUIT is Overvoltage Category II. 8 f' u& b, B0 V K! Z& V5 u% x
# d. j# t1 k8 M8 G1 UTransient overvoltage: 9 \: |5 }- H1 [* I' v
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT) l$ s: h, I+ N" b$ `; t
or a TNV-3 CIRCUIT; and6 k! c& T U8 I" r1 q
– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
1 d! {2 Z- L. w1 g& tor a TNV-2 CIRCUIT. |
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