KSC

可以先講下 X class 及Y class capacitor 有乜分別同在電件上用乜來標籤嗎?

燒PU

如果將CAP 既電容量加大.
效果會唔會更明顯gr?

KSC

原帖由 KSC 於 2006-5-5 18:46 發表
可以先講下 X class 及Y class capacitor 有乜分別同在電件上用乜來標籤嗎?

找到少少資料，但都係解決唔到我想問的野，加上我又唔係好明它講乜
有人可以簡單詮譯下嗎?
Class X capacitors are suitable for use in
situations where failure of the capacitors
would not lead danger of electric shock.
Overvoltage which can destroy the capacitor
may arise from lightning strike on outside
lines, from switching in neighbouring
equipment, or switching in the equipment
in which the capacitor is used.

Class Y capacitors are suitable for use in
situations, where failure of the capacitor
could lead to danger situation.


@@@@@@@@@@@@@@@@@@@@@@@@
1. X cap are line to line, 0.1-1 uF. X1 for 3 phase line impulsed voltage tested at 4KV, X2 for AC wall-let impulsed voltage tested at 2.5 KV.
2. Y cap are line to neutral ground. 4700 pF. small to limit AC leakage current. Y1 for double insulation impulsed tested at 8KV, Y2 for basic insulation impulsed tested at 5KV.
3. Capacitor Discharge: The capacitor discharge test ensures that if an ac plug is abruptly removed from its receptacle, the voltage across the line and neutral terminals will not exceed a safe level. Per UL 1950, voltage across a capacitance greater than 0.1 μF must decay to 37% of the ac-input peak voltage in 1 second for type A equipment and 10 seconds for type B equipment. IEC 61010-1 requires that the pins not be hazardous (live) at 5 seconds after disconnection from the supply.

[ 本帖最後由 KSC 於 2006-5-5 19:51 編輯 ]

Bread

oh...terrible
應該無買錯架喎
run左 十六分半鐘，正當想打上來分享時...突然一爆
好在有fuse + 有穿鞋 + 有穿手套

p.s. 我無事

[ 本帖最後由 Bread 於 2006-5-5 21:05 編輯 ]

Bread

原帖由 1956 於 2006-5-5 21:33 發表

你買的VDR編號是?

是這個
有錯的請多多指教