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引用第40楼barry于2007-07-26 09:20发表的 :
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ADAPTOR 适用于 Overvoltage category 2 ,5 r; t$ Q3 G6 y$ P- H8 k9 J
, U. ~0 z3 c |' gXDSL 不适用于电网的 Overvoltage category !!! - c* ?1 E/ ~9 c7 f
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if& S: S! Z0 F8 P, f" F; H2 E
the PRIMARY CIRCUIT is Overvoltage Category II. 0 g/ p" s7 o/ |) [- \! D
1 b! v* }% S$ NTransient overvoltage: 3 K- F% L& L3 J% l" f
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT2 z( M$ r, D. W1 `4 X
or a TNV-3 CIRCUIT; and
2 b, L; ?6 f |1 @– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT6 H! F1 Y5 i( z$ h' W
or a TNV-2 CIRCUIT. |
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