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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 ,
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XDSL 不适用于电网的 Overvoltage category !!! 0 M( P3 H7 v/ j! _+ _
A SECONDARY CIRCUIT derived from an AC MAINS SUPPLY will normally be Overvoltage Category I if- o' H6 h' r( a, O& z
the PRIMARY CIRCUIT is Overvoltage Category II. ( r3 y1 ^1 } @
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Transient overvoltage: p9 P: {9 \' W
1 500 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is a TNV-1 CIRCUIT
: O+ ]8 }' z, _% I8 U Hor a TNV-3 CIRCUIT; and
; A0 T0 o3 {( A) j* i- _– 800 Vpeak if the circuit connected to the TELECOMMUNICATION NETWORK is an SELV CIRCUIT0 D# Q- v- {- K3 J, x
or a TNV-2 CIRCUIT. |
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