IT类EN60950-1

520168 · 发表于 2014-5-16 18:02

各位大神,
IT类EN60950-1电源产品放电测试,有这样的要求吗?(CX1只并联了一组放电电阻，在故障情况下（open R1），放电测试会fail，需要再并联一组放电电阻。)
根据那个条款?

谢谢!

cylam128 · 发表于 2014-5-17 09:03

2.1.1.7

520168 · 发表于 2014-5-17 10:32

没有说要在故障情况下（open R1）.

2.1.1.7  Discharge of capacitors in equipment
Equipment shall be so designed that, at an  OPERATOR-accessible external point of
disconnection of a MAINS SUPPLY, the risk of electric shock from stored charge on capacitors
connected in the equipment is reduced. No test for shock hazard is required unless the
nominal voltage of the MAINS SUPPLY exceeds 42,4V peak or 60V d.c.
Compliance is checked by inspection of the equipment and relevant circuit diagrams, taking
into account the possibility of disconnection of the supply with any on/off switch in either
position.
Equipment is considered to comply if any capacitor having a marked or nominal capacitance
exceeding 0,1 µF and in a circuit connected to the MAINS SUPPLY has a means of discharge
resulting in a time constant not exceeding:
−  1 s for PLUGGABLE EQUIPMENT TYPE A; and
−  10 s for PLUGGABLE EQUIPMENT TYPE B.
The relevant time constant is the product of the effective capacitance in microfarads and the
effective discharge resistance in megohms. If it is difficult to determine the effective
capacitance and resistance values, a measurement of voltage decay at the point of external
disconnection can be used. When conducting the voltage decay measurement, the result is
the measurement is either made with, or referred to, an instrument having an input impedance
consisting of a resistance of 100MΩ ±5 MΩ  in parallel with an input capacitance of
20 pF ±5 pF 25 pF or less.

长征 · 发表于 2014-5-17 11:48

60950 不需要评估异常情况的放电测试，60065 才要评估

cylam128 · 发表于 2014-5-17 13:26

不需要评估异常情况

chocochang968 · 发表于 2014-5-17 16:24

60950中的放电测试没有要求故障条件下也满足，只要正常通过就可以了。

安工 · 发表于 2014-5-17 21:39

楼上全部正解！

dengwx · 发表于 2014-5-19 12:54

电容放电只做过正常情况的！

520168 · 发表于 2014-5-19 13:51

EN 60065要求放电测试是在异常的情况下做的,
而60950中的放电测试要求正常条件下进行,听某机构说以后
60065 和60950要合成一份标准,所以要求放电测试是在异常的情况下做

sky0805 · 发表于 2014-5-19 14:14

原來是標準要合併一起作～那以後規範不好做了...

		自动登录	找回密码
密码			注册安规

	安规论坛 \| 仪器设备 \| 求职招聘 \| 国家标准		公告 \| 教程 \| 家电 \| 灯具 \| 环保 \| ITAV		签到充值在线打卡设备		好友\| 帖子\| 空间\| 日志\| 相册
	IP淋雨机 \| 证书查询 \| 规范下载 \| 资质查询		招聘 \| 考试 \| 线缆 \| 玩具 \| 标准 \| 综合		红包邮箱打卡工资禁言		分享\| 记录\| 道具\| 勋章\| 任务

IP淋雨设备\| 恒温恒湿箱\| 拉力机\| 医疗检测设备	沙特Saber 埃及COI 中东GCC｜CoC直接发证机构	水平垂直燃烧机\|灼热丝\|针焰试验机\|漏电起痕试验机
灯头量规\|试验指\|插头插座量规\|灯具检测设备	耐划痕试验机\|可程式恒温恒湿试验箱 \| 耦合器设备	广东安规-原厂生产-满足标准-审核无忧

[电源产品] IT类EN60950-1

点评

点评

点评

安规网为您推荐 /1