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引用第40楼barry于2007-07-26 09:20发表的 :" W G$ f) C3 X$ z
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ADAPTOR 适用于 Overvoltage category 2 ,
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XDSL 不适用于电网的 Overvoltage category !!!
9 U! x0 G0 M$ l" v% WA SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if# f, g3 ~4 U) A6 o- }
the PRIMARY CIRCUIT is Overvoltage Category II.
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9 d6 L; Y+ \* A' d4 xTransient overvoltage:
. V1 |2 O0 a' V: |6 S1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT8 J& q" J: w- U* V0 Q4 P% c; i' W7 z
or a TNV-3 CIRCUIT; and
7 {! T9 u! b3 m, m( c P% S) j, F– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT
( c. Q n. q+ w) o: f( por a TNV-2 CIRCUIT. |
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