|
|
标题没写产品类别，这是家电版块就按家电来看了。EN60335的附录A.2有要求（详细电压要求见附表）：
3 U- j% I- b' V0 b! r+ z, M Z& SA.2 Electric strength test * |* I M, |# F6 V' E4 x% B& ]
The insulation of the appliance is subjected to a voltage of substantially sinusoidal waveform
) c# B& y5 c/ _2 w2 {having a frequency of approximately 50 Hz or 60 Hz for 1 s. The value of the test voltage and
U# \* l- h% X* r" B t6 _the points of application are shown in table A.1.
) S1 k4 v, q' _/ C- NNOTE 1 It may be necessary for the appliance to be in operation during the test to ensure that the test voltage is ! C( f& _% r. U# O* W2 `2 C
applied to all relevant insulation, for example, heating elements controlled by a relay.
" o# ^: B6 Q+ y" XNo breakdown shall occur. Breakdown is assumed to occur when the current in the test circuit
" E7 ~/ f$ ?! j# q" }6 N* ^ lexceeds 5 mA. However, this limit may be increased up to 30 mA for appliances with a high : W5 P3 }5 r$ L+ p$ X9 [
leakage current. * h7 J. R& ^, ?/ z. J) u
NOTE 2 The circuit used for the test incorporates a current sensing device that trips when the current exceeds
! N1 r4 S4 |/ g8 G! uthe limit.
" ^1 x2 l# [( C+ H8 QNOTE 3 The high voltage transformer is to be capable of maintaining the specified voltage at the limiting current. & B: q$ X! I5 n# }8 t1 }' w
NOTE 4 Instead of being subjected to an a.c. voltage, the insulation may be subjected to a d.c. voltage of " n* d5 `# S, k [: }2 N6 ^8 ?# I
1,5 times the value shown in the table. An a.c. voltage having a frequency up to 5 Hz is considered to be a d.c.
. O! U2 m% s9 ]/ P0 jvoltage.
, Z7 X/ C3 J: R
, ], ^( k8 k! T5 v* D) @. X0 l |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有帐号？注册安规
x
|
/2 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2012-7-20 15:49
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡
楼主
发表于 2012-8-20 21:07
